amoxapine (Rx)

Depression

Initiate at low dose (25 mg q8-12hr) and gradually titrate upward every 5-7 days up to 200-300 mg PO qHS

If dose exceeds 300 mg/day, administer in divided doses q12hr

Outpatient: Not to exceed 400 mg/day

Inpatient: May require higher doses, up to 600 mg/day divided q12hr

Not recommended

Use caution; avoid use

Depression

Initiate at low dose (25 mg q8-12hr) and gradually titrate upward every 5-7 days up to 200-300 mg PO qHS

If dose exceeds 300 mg/day, administer in divided doses q12hr

Outpatient: Not to exceed 400 mg/day

Inpatient: May require higher doses, up to 600 mg/day divided q12hr

Contraindicated (17)

• disopyramide

  amoxapine and disopyramide both increase QTc interval. Contraindicated.

• ibutilide

  amoxapine and ibutilide both increase QTc interval. Contraindicated.

• indapamide

  amoxapine and indapamide both increase QTc interval. Contraindicated.

• iobenguane I 123

  amoxapine decreases effects of iobenguane I 123 by pharmacodynamic antagonism. Contraindicated. If clinically appropriate, discontinue drugs that decrease uptake of NE for at least 5 half-lives; may cause false-negative imaging results.

• isocarboxazid

  isocarboxazid and amoxapine both increase serotonin levels. Contraindicated.

• linezolid

  linezolid and amoxapine both increase serotonin levels. Contraindicated.

• pentamidine

  amoxapine and pentamidine both increase QTc interval. Contraindicated.

• phenelzine

  phenelzine and amoxapine both increase serotonin levels. Contraindicated.

• pimozide

  amoxapine and pimozide both increase QTc interval. Contraindicated.

• procainamide

  amoxapine and procainamide both increase QTc interval. Contraindicated.

• procarbazine

  procarbazine and amoxapine both increase serotonin levels. Contraindicated. Combination is contraindicated within 2 weeks of MAOI use.

• quinidine

  quinidine and amoxapine both increase QTc interval. Contraindicated.

• safinamide

  amoxapine, safinamide. Either increases toxicity of the other by serotonin levels. Contraindicated. Concomitant use could result in life-threatening serotonin syndrome.

• selegiline

  selegiline and amoxapine both increase serotonin levels. Contraindicated. Concurrent use or use within 14 days of selegiline treatment is contraindicated

• sotalol

  amoxapine and sotalol both increase QTc interval. Contraindicated.

• tranylcypromine

  tranylcypromine and amoxapine both increase serotonin levels. Contraindicated.

• ziprasidone

  ziprasidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Contraindicated.

Serious - Use Alternative (127)

• albuterol

  amoxapine, albuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• amiodarone

  amoxapine and amiodarone both increase QTc interval. Avoid or Use Alternate Drug.

• amitriptyline

  amitriptyline and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amitriptyline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• arformoterol

  amoxapine, arformoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• arsenic trioxide

  amoxapine and arsenic trioxide both increase QTc interval. Avoid or Use Alternate Drug.

• artemether

  artemether and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• artemether/lumefantrine

  amoxapine and artemether/lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.

• benzphetamine

  amoxapine, benzphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• buspirone

  amoxapine and buspirone both increase serotonin levels. Avoid or Use Alternate Drug.

• calcium/magnesium/potassium/sodium oxybates

  amoxapine, calcium/magnesium/potassium/sodium oxybates. Either increases effects of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Profound sedation, respiratory depression, coma, and death may result if coadministered. Reserve concomitant prescribing of these drugs in patients for whom other treatment options are inadequate. Limit dosages and durations to the minimum required. Monitor closely for signs of respiratory depression and sedation.

• chlorpromazine

  chlorpromazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• citalopram

  citalopram and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug. Citalopram may increase TCA levels. Increased risk of serotonin syndrome or neuroleptic malignant syndrome. Potential risk for QT prolongation. ECG monitoring is recommended.

• clarithromycin

  amoxapine and clarithromycin both increase QTc interval. Avoid or Use Alternate Drug.

• clomipramine

  amoxapine and clomipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and clomipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• clonidine

  amoxapine decreases effects of clonidine by Other (see comment). Avoid or Use Alternate Drug. Comment: Inhibition of uptake by adrenergic neurons.

• cyclobenzaprine

  amoxapine and cyclobenzaprine both increase serotonin levels. Avoid or Use Alternate Drug.

• dacomitinib

  dacomitinib will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Avoid or Use Alternate Drug. Avoid use with CYP2D6 substrates where minimal increases in concentration of the CYP2D6 substrate may lead to serious or life-threatening toxicities.

• desipramine

  amoxapine and desipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and desipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• desvenlafaxine

  amoxapine and desvenlafaxine both increase serotonin levels. Avoid or Use Alternate Drug.

• dexfenfluramine

  amoxapine, dexfenfluramine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dexmethylphenidate

  amoxapine, dexmethylphenidate. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dextroamphetamine

  amoxapine, dextroamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dextromethorphan

  amoxapine and dextromethorphan both increase serotonin levels. Avoid or Use Alternate Drug.

• diethylpropion

  amoxapine, diethylpropion. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dobutamine

  amoxapine, dobutamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dofetilide

  amoxapine and dofetilide both increase QTc interval. Avoid or Use Alternate Drug.

• dolasetron

  dolasetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• donepezil

  donepezil and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• dopamine

  amoxapine, dopamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dopexamine

  amoxapine, dopexamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dosulepin

  amoxapine and dosulepin both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and dosulepin both increase serotonin levels. Avoid or Use Alternate Drug.

• doxepin

  amoxapine and doxepin both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and doxepin both increase serotonin levels. Avoid or Use Alternate Drug.

• dronedarone

  amoxapine and dronedarone both increase QTc interval. Avoid or Use Alternate Drug.

• droperidol

  amoxapine and droperidol both increase QTc interval. Avoid or Use Alternate Drug.

• duloxetine

  duloxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• ephedrine

  amoxapine, ephedrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• epinephrine

  epinephrine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, epinephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• epinephrine racemic

  epinephrine racemic and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, epinephrine racemic. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• erythromycin base

  amoxapine and erythromycin base both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin ethylsuccinate

  amoxapine and erythromycin ethylsuccinate both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin lactobionate

  amoxapine and erythromycin lactobionate both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin stearate

  amoxapine and erythromycin stearate both increase QTc interval. Avoid or Use Alternate Drug.

• escitalopram

  escitalopram and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• fenfluramine

  amoxapine, fenfluramine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• fexinidazole

  fexinidazole and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of fexinidazole with drugs known to block potassium channels or prolong QT interval.

• fluconazole

  amoxapine and fluconazole both increase QTc interval. Avoid or Use Alternate Drug.

• fluoxetine

  fluoxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• fluphenazine

  fluphenazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• fluvoxamine

  fluvoxamine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• formoterol

  amoxapine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• fosamprenavir

  fosamprenavir increases levels of amoxapine by decreasing metabolism. Avoid or Use Alternate Drug.

• givosiran

  givosiran will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Avoid or Use Alternate Drug. Avoid coadministration of sensitive CYP2D6 substrates with givosiran. If unavoidable, decrease the CYP2D6 substrate dosage in accordance with approved product labeling.

• granisetron

  granisetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• guanfacine

  amoxapine decreases effects of guanfacine by Other (see comment). Avoid or Use Alternate Drug. Comment: Inhibition of uptake by adrenergic neurons.

• haloperidol

  amoxapine and haloperidol both increase QTc interval. Avoid or Use Alternate Drug.

• hydroxychloroquine sulfate

  hydroxychloroquine sulfate and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• imipramine

  amoxapine and imipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and imipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• iobenguane I 131

  amoxapine will decrease the level or effect of iobenguane I 131 by Other (see comment). Avoid or Use Alternate Drug. Based on the mechanism of action of iobenguane, drugs that reduce catecholamine uptake or that deplete catecholamine stores may interfere with iobenguane uptake into cells, and thus, reduce iobenguane efficacy. Discontinue interfering drugs for at least 5 half-lives before administration of either the dosimetry or an iobenguane dose. Do not administer these drugs until at least 7 days after each iobenguane dose.

• isoproterenol

  amoxapine, isoproterenol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• ivosidenib

  ivosidenib and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of QTc prolonging drugs with ivosidenib or replace with alternate therapies. If coadministration of a QTc prolonging drug is unavoidable, monitor for increased risk of QTc interval prolongation.

• ketoconazole

  amoxapine and ketoconazole both increase QTc interval. Avoid or Use Alternate Drug.

• levalbuterol

  amoxapine, levalbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• levoketoconazole

  amoxapine and levoketoconazole both increase QTc interval. Avoid or Use Alternate Drug.

• levomilnacipran

  levomilnacipran and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• lisdexamfetamine

  amoxapine, lisdexamfetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• lofepramine

  amoxapine and lofepramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and lofepramine both increase serotonin levels. Avoid or Use Alternate Drug.

• lumefantrine

  amoxapine and lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.

• macimorelin

  macimorelin and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Macimorelin causes an increase of ~11 msec in the corrected QT interval. Avoid coadministration with drugs that prolong QT interval, which could increase risk for developing torsade de pointes-type ventricular tachycardia. Allow sufficient washout time of drugs that are known to prolong the QT interval before administering macimorelin.

• maprotiline

  amoxapine and maprotiline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and maprotiline both increase serotonin levels. Avoid or Use Alternate Drug.

• mefloquine

  mefloquine increases toxicity of amoxapine by QTc interval. Avoid or Use Alternate Drug. Mefloquine may enhance the QTc prolonging effect of high risk QTc prolonging agents.

• meperidine

  amoxapine and meperidine both increase serotonin levels. Avoid or Use Alternate Drug.

• metaproterenol

  amoxapine, metaproterenol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• methamphetamine

  amoxapine, methamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• methylene blue

  amoxapine and methylene blue both increase serotonin levels. Avoid or Use Alternate Drug. Methylene blue may increase serotonin as a result of MAO-A inhibition. If methylene blue must be administered, discontinue serotonergic drug immediately and monitor for CNS toxicity. Serotonergic therapy may be resumed 24 hours after last methylene blue dose or after 2 weeks of monitoring, whichever comes first.

• methylenedioxymethamphetamine

  amoxapine, methylenedioxymethamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• metoclopramide intranasal

  amoxapine, metoclopramide intranasal. Either increases effects of the other by Other (see comment). Avoid or Use Alternate Drug. Comment: Avoid use of metoclopramide intranasal or interacting drug, depending on importance of drug to patient.

• midodrine

  amoxapine, midodrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• milnacipran

  milnacipran and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• mirtazapine

  mirtazapine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• mobocertinib

  mobocertinib will decrease the level or effect of amoxapine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. If coadministration unavoidable, reduce mobocertinib dose and monitor QTc interval more frequently

• moxifloxacin

  amoxapine and moxifloxacin both increase QTc interval. Avoid or Use Alternate Drug.

• nefazodone

  nefazodone and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• netupitant/palonosetron

  netupitant/palonosetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• nilotinib

  amoxapine and nilotinib both increase QTc interval. Avoid or Use Alternate Drug.

• norepinephrine

  amoxapine, norepinephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• nortriptyline

  amoxapine and nortriptyline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and nortriptyline both increase serotonin levels. Avoid or Use Alternate Drug.

• octreotide

  amoxapine and octreotide both increase QTc interval. Avoid or Use Alternate Drug.

• octreotide (Antidote)

  amoxapine and octreotide (Antidote) both increase QTc interval. Avoid or Use Alternate Drug.

• ondansetron

  amoxapine and ondansetron both increase QTc interval. Avoid or Use Alternate Drug. Avoid with congenital long QT syndrome; ECG monitoring recommended with concomitant medications that prolong QT interval, electrolyte abnormalities, CHF, or bradyarrhythmias.
  
  ondansetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• ozanimod

  ozanimod increases toxicity of amoxapine by sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Because the active metabolite of ozanimod inhibits MAO-B in vitro, there is a potential for serious adverse reactions, including hypertensive crisis. Therefore, coadministration of ozanimod with drugs that can increase norepinephrine or serotonin is not recommended. Monitor for hypertension with concomitant use.

• palonosetron

  palonosetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• paroxetine

  paroxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• perphenazine

  perphenazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• phendimetrazine

  amoxapine, phendimetrazine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phentermine

  amoxapine, phentermine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine

  amoxapine, phenylephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine PO

  amoxapine, phenylephrine PO. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• pirbuterol

  amoxapine, pirbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• pitolisant

  amoxapine decreases effects of pitolisant by Other (see comment). Avoid or Use Alternate Drug. Comment: Pitolisant increases histamine levels in the brain; therefore, H1 receptor antagonists that cross the blood-brain barrier may reduce the efficacy of pitolisant.

• promazine

  promazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• propylhexedrine

  amoxapine, propylhexedrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• protriptyline

  amoxapine and protriptyline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and protriptyline both increase serotonin levels. Avoid or Use Alternate Drug.

• pseudoephedrine

  amoxapine increases effects of pseudoephedrine by sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• rasagiline

  rasagiline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug. Severe CNS toxicity associated with hyperpyrexia has been reported with the combined treatment of an antidepressant and rasagiline. Avoid combination within 14 days of MAOI use.

• salmeterol

  amoxapine, salmeterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• selegiline transdermal

  selegiline transdermal and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• selinexor

  selinexor, amoxapine. unspecified interaction mechanism. Avoid or Use Alternate Drug. Patients treated with selinexor may experience neurological toxicities. Avoid taking selinexor with other medications that may cause dizziness or confusion.

• serdexmethylphenidate/dexmethylphenidate

  amoxapine, serdexmethylphenidate/dexmethylphenidate. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• sertraline

  sertraline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• sodium oxybate

  amoxapine, sodium oxybate. Either increases effects of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Profound sedation, respiratory depression, coma, and death may result if coadministered. Reserve concomitant prescribing of these drugs in patients for whom other treatment options are inadequate. Limit dosages and durations to the minimum required. Monitor closely for signs of respiratory depression and sedation.

• St John's Wort

  amoxapine and St John's Wort both increase serotonin levels. Avoid or Use Alternate Drug.

• tedizolid

  tedizolid, amoxapine. Either increases effects of the other by Mechanism: pharmacodynamic synergism. Avoid or Use Alternate Drug. both increase serotonin levels; increased risk of serotonin syndrome.

• terbutaline

  amoxapine, terbutaline. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• thioridazine

  thioridazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• trazodone

  amoxapine and trazodone both increase QTc interval. Avoid or Use Alternate Drug.
  
  trazodone and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• trifluoperazine

  trifluoperazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• trimipramine

  amoxapine and trimipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and trimipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• umeclidinium bromide/vilanterol inhaled

  amoxapine increases toxicity of umeclidinium bromide/vilanterol inhaled by QTc interval. Avoid or Use Alternate Drug. Exercise extreme caution when vilanterol coadministered with drugs that prolong QTc interval; adrenergic agonist effects on the cardiovascular system may be potentiated.
  
  amoxapine and umeclidinium bromide/vilanterol inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Exercise extreme caution if vilanterol coadministered with MAOIs or TCAs, or within 2 weeks of discontinuation of these drugs; adrenergic agonist effects on the cardiovascular system may be potentiated

• vandetanib

  amoxapine, vandetanib. Either increases toxicity of the other by QTc interval. Avoid or Use Alternate Drug. Avoid coadministration with drugs known to prolong QT interval; if a drug known to prolong QT interval must be used, more frequent ECG monitoring is recommended.

• vemurafenib

  vemurafenib and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Concomitant use of vemurafenib with drugs that prolong QT interval is not recommended.

• venlafaxine

  venlafaxine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• vilanterol/fluticasone furoate inhaled

  amoxapine and vilanterol/fluticasone furoate inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Exercise extreme caution if vilanterol coadministered with MAOIs or TCAs, or within 2 weeks of discontinuation of these drugs; adrenergic agonist effects on the cardiovascular system may be potentiated
  
  amoxapine increases toxicity of vilanterol/fluticasone furoate inhaled by QTc interval. Avoid or Use Alternate Drug. Exercise extreme caution when vilanterol coadministered with drugs that prolong QTc interval; adrenergic agonist effects on the cardiovascular system may be potentiated.

• vortioxetine

  amoxapine, vortioxetine. Either increases effects of the other by serotonin levels. Avoid or Use Alternate Drug.

• xylometazoline

  amoxapine, xylometazoline. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• yohimbe

  yohimbe, amoxapine. Mechanism: unspecified interaction mechanism. Contraindicated. May cause increase or decrease in blood pressure.

• yohimbine

  amoxapine, yohimbine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• ziprasidone

  amoxapine and ziprasidone both increase QTc interval. Avoid or Use Alternate Drug.

Monitor Closely (326)

• 5-HTP

  amoxapine and 5-HTP both increase serotonin levels. Modify Therapy/Monitor Closely.

• abiraterone

  abiraterone increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Avoid coadministration of abiraterone with substrates of CYP2D6. If alternative therapy cannot be used, exercise caution and consider a dose reduction of the CYP2D6 substrate.

• abobotulinumtoxinA

  abobotulinumtoxinA increases effects of amoxapine by pharmacodynamic synergism. Use Caution/Monitor. Use of anticholinergic drugs after administration of botulinum toxin-containing products may potentiate systemic anticholinergic effects. .

• aclidinium

  aclidinium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• albuterol

  amoxapine increases and albuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• alfentanil

  alfentanil and amoxapine both increase sedation. Use Caution/Monitor.

• almotriptan

  almotriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• alprazolam

  alprazolam and amoxapine both increase sedation. Use Caution/Monitor.

• amifampridine

  amoxapine increases toxicity of amifampridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Amifampridine can cause seizures. Coadministration with drugs that lower seizure threshold may increase this risk.

• amitriptyline

  amitriptyline and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amitriptyline and amoxapine both increase sedation. Use Caution/Monitor.

• amobarbital

  amobarbital and amoxapine both increase sedation. Use Caution/Monitor.

• anticholinergic/sedative combos

  anticholinergic/sedative combos and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• apomorphine

  amoxapine and apomorphine both increase sedation. Use Caution/Monitor.

• arformoterol

  amoxapine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• aripiprazole

  aripiprazole and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  aripiprazole and amoxapine both increase sedation. Use Caution/Monitor.
  
  aripiprazole and amoxapine both increase QTc interval. Use Caution/Monitor.

• armodafinil

  amoxapine increases and armodafinil decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• atazanavir

  atazanavir increases levels of amoxapine by unspecified interaction mechanism. Use Caution/Monitor.

• atracurium

  atracurium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• atropine

  atropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• atropine IV/IM

  atropine IV/IM and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• azelastine

  azelastine and amoxapine both increase sedation. Use Caution/Monitor.

• azithromycin

  amoxapine and azithromycin both increase QTc interval. Use Caution/Monitor.

• baclofen

  baclofen and amoxapine both increase sedation. Use Caution/Monitor.

• bedaquiline

  amoxapine and bedaquiline both increase QTc interval. Modify Therapy/Monitor Closely. ECG should be monitored closely

• belladonna alkaloids

  belladonna alkaloids and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• belladonna and opium

  belladonna and opium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  belladonna and opium and amoxapine both increase sedation. Use Caution/Monitor.

• benperidol

  benperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  benperidol and amoxapine both increase sedation. Use Caution/Monitor.

• benzhydrocodone/acetaminophen

  benzhydrocodone/acetaminophen, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• benzphetamine

  amoxapine increases and benzphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• benztropine

  benztropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Additive anticholinergic adverse effects may be seen with concurrent use.

• bethanechol

  bethanechol increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• brompheniramine

  brompheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine

  buprenorphine and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine buccal

  buprenorphine buccal and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine subdermal implant

  amoxapine, buprenorphine subdermal implant. Either increases toxicity of the other by serotonin levels. Use Caution/Monitor. Concomitant use could result in life-threatening serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation, and during dose adjustment of the serotonergic drug. Discontinue buprenorphine if serotonin syndrome is suspected.

• buprenorphine, long-acting injection

  amoxapine, buprenorphine, long-acting injection. Either increases toxicity of the other by serotonin levels. Use Caution/Monitor. Concomitant use could result in life-threatening serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation, and during dose adjustment of the serotonergic drug. Discontinue buprenorphine if serotonin syndrome is suspected.

• bupropion

  amoxapine increases toxicity of bupropion by unspecified interaction mechanism. Use Caution/Monitor. May lower seizure threshold; keep bupropion dose as low as possible.
  
  bupropion will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• butabarbital

  butabarbital and amoxapine both increase sedation. Use Caution/Monitor.

• butalbital

  butalbital and amoxapine both increase sedation. Use Caution/Monitor.

• butorphanol

  butorphanol and amoxapine both increase sedation. Use Caution/Monitor.

• caffeine

  amoxapine increases and caffeine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• carbachol

  carbachol increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• carbinoxamine

  carbinoxamine and amoxapine both increase sedation. Use Caution/Monitor.

• carisoprodol

  carisoprodol and amoxapine both increase sedation. Use Caution/Monitor.

• cenobamate

  cenobamate, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor.

• cevimeline

  cevimeline increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• chloral hydrate

  chloral hydrate and amoxapine both increase sedation. Use Caution/Monitor.

• chlordiazepoxide

  chlordiazepoxide and amoxapine both increase sedation. Use Caution/Monitor.

• chloroquine

  chloroquine increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• chlorpheniramine

  chlorpheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• chlorpromazine

  chlorpromazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  chlorpromazine and amoxapine both increase sedation. Use Caution/Monitor.

• chlorzoxazone

  chlorzoxazone and amoxapine both increase sedation. Use Caution/Monitor.

• cinnarizine

  cinnarizine and amoxapine both increase sedation. Use Caution/Monitor.

• cisatracurium

  cisatracurium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• citalopram

  citalopram and amoxapine both increase QTc interval. Use Caution/Monitor.

• clemastine

  clemastine and amoxapine both increase sedation. Use Caution/Monitor.

• clobazam

  clobazam will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Lower doses of drugs metabolized by CYP2D6 may be required when used concomitantly.
  
  amoxapine, clobazam. Other (see comment). Use Caution/Monitor. Comment: Concomitant administration can increase the potential for CNS effects (e.g., increased sedation or respiratory depression).

• clomipramine

  amoxapine and clomipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and clomipramine both increase sedation. Use Caution/Monitor.

• clonazepam

  clonazepam and amoxapine both increase sedation. Use Caution/Monitor.

• clorazepate

  clorazepate and amoxapine both increase sedation. Use Caution/Monitor.

• clozapine

  clozapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  clozapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  clozapine and amoxapine both increase QTc interval. Use Caution/Monitor.

• cobicistat

  cobicistat will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Carefully titrate antidepressant to the desired effect, including using the lowest feasible initial or maintenance dose, and monitoring for antidepressant response
  
  cobicistat will increase the level or effect of amoxapine by Other (see comment). Use Caution/Monitor. Carefully titrate dose of the antidepressant to the desired effect, including using the lowest feasible initial or maintenance dose, and monitor its response during coadministration with TCAs and cobicistat.

• cocaine

  amoxapine and cocaine both increase serotonin levels. Modify Therapy/Monitor Closely.

• codeine

  codeine and amoxapine both increase sedation. Use Caution/Monitor.

• crizotinib

  crizotinib and amoxapine both increase QTc interval. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

• cyclizine

  cyclizine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  cyclizine and amoxapine both increase sedation. Use Caution/Monitor.

• cyclobenzaprine

  cyclobenzaprine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  cyclobenzaprine and amoxapine both increase sedation. Use Caution/Monitor.

• cyproheptadine

  cyproheptadine and amoxapine both increase sedation. Use Caution/Monitor.

• dantrolene

  dantrolene and amoxapine both increase sedation. Use Caution/Monitor.

• daridorexant

  amoxapine and daridorexant both increase sedation. Modify Therapy/Monitor Closely. Coadministration increases risk of CNS depression, which can lead to additive impairment of psychomotor performance and cause daytime impairment.

• darifenacin

  darifenacin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• dasatinib

  amoxapine and dasatinib both increase QTc interval. Modify Therapy/Monitor Closely.

• debrisoquine

  amoxapine decreases effects of debrisoquine by Other (see comment). Use Caution/Monitor. Comment: Inhibition of uptake by adrenergic neurons.

• desflurane

  desflurane and amoxapine both increase sedation. Use Caution/Monitor.

• desipramine

  amoxapine and desipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and desipramine both increase sedation. Use Caution/Monitor.

• deutetrabenazine

  amoxapine and deutetrabenazine both increase sedation. Use Caution/Monitor.
  
  deutetrabenazine and amoxapine both increase QTc interval. Use Caution/Monitor.

• dexchlorpheniramine

  dexchlorpheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• dexfenfluramine

  amoxapine increases and dexfenfluramine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine and dexfenfluramine both increase serotonin levels. Modify Therapy/Monitor Closely.

• dexmedetomidine

  dexmedetomidine and amoxapine both increase sedation. Use Caution/Monitor.

• dexmethylphenidate

  amoxapine increases and dexmethylphenidate decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• dextroamphetamine

  amoxapine increases and dextroamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine and dextroamphetamine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases effects of dextroamphetamine by unknown mechanism. Use Caution/Monitor.

• dextroamphetamine transdermal

  amoxapine will increase the level or effect of dextroamphetamine transdermal by pharmacodynamic synergism. Modify Therapy/Monitor Closely. May enhance the activity of tricyclic or sympathomimetic agents causing striking and sustained increases in dextroamphetamine levels in brain; May be potentiate cardiovascular effects. Monitor frequently and adjust or use an alternant based on clinical response.

• dextromoramide

  dextromoramide and amoxapine both increase sedation. Use Caution/Monitor.

• diamorphine

  diamorphine and amoxapine both increase sedation. Use Caution/Monitor.

• diazepam

  diazepam and amoxapine both increase sedation. Use Caution/Monitor.

• diazepam intranasal

  diazepam intranasal, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration may potentiate the CNS-depressant effects of each drug.

• dicyclomine

  dicyclomine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• diethylpropion

  amoxapine increases and diethylpropion decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• difelikefalin

  difelikefalin and amoxapine both increase sedation. Use Caution/Monitor.

• difenoxin hcl

  difenoxin hcl and amoxapine both increase sedation. Use Caution/Monitor.

• dihydroergotamine

  amoxapine and dihydroergotamine both increase serotonin levels. Modify Therapy/Monitor Closely.

• dihydroergotamine intranasal

  amoxapine and dihydroergotamine intranasal both increase serotonin levels. Modify Therapy/Monitor Closely.

• dimenhydrinate

  dimenhydrinate and amoxapine both increase sedation. Use Caution/Monitor.

• diphenhydramine

  diphenhydramine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  diphenhydramine and amoxapine both increase sedation. Use Caution/Monitor.

• diphenoxylate hcl

  diphenoxylate hcl and amoxapine both increase sedation. Use Caution/Monitor.

• dipipanone

  dipipanone and amoxapine both increase sedation. Use Caution/Monitor.

• dobutamine

  amoxapine increases and dobutamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• dofetilide

  dofetilide increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• dolasetron

  amoxapine and dolasetron both increase QTc interval. Modify Therapy/Monitor Closely.

• donepezil

  donepezil increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• dopamine

  amoxapine increases and dopamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• dopexamine

  amoxapine increases and dopexamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• dosulepin

  amoxapine and dosulepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and dosulepin both increase sedation. Use Caution/Monitor.

• doxepin

  amoxapine and doxepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and doxepin both increase sedation. Use Caution/Monitor.

• doxylamine

  doxylamine and amoxapine both increase sedation. Use Caution/Monitor.

• droperidol

  droperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  droperidol and amoxapine both increase sedation. Use Caution/Monitor.

• echothiophate iodide

  echothiophate iodide increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• eletriptan

  eletriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• eliglustat

  eliglustat increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Monitor therapeutic drug concentrations, as indicated, or consider reducing the dosage of the concomitant drug and titrate to clinical effect.

• elvitegravir/cobicistat/emtricitabine/tenofovir DF

  elvitegravir/cobicistat/emtricitabine/tenofovir DF increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Cobicistat is a CYP2D6 inhibitor; caution with CYP2D6 substrates for which elevated plasma concentrations are associated with serious and/or life-threatening events.

• ephedrine

  amoxapine increases and ephedrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine increases effects of ephedrine by unknown mechanism. Use Caution/Monitor.

• epinephrine

  amoxapine increases and epinephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine increases effects of epinephrine by unknown mechanism. Use Caution/Monitor.

• epinephrine inhaled

  amoxapine and epinephrine inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. Tricyclic antidepressants may potentiate epinephrine effect on cardiovascular system.

• epinephrine racemic

  amoxapine increases and epinephrine racemic decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine increases effects of epinephrine racemic by unknown mechanism. Use Caution/Monitor.

• ergotamine

  amoxapine and ergotamine both increase serotonin levels. Modify Therapy/Monitor Closely.

• escitalopram

  escitalopram increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• esketamine intranasal

  esketamine intranasal, amoxapine. Either increases toxicity of the other by sedation. Modify Therapy/Monitor Closely.

• estazolam

  estazolam and amoxapine both increase sedation. Use Caution/Monitor.

• ethanol

  amoxapine and ethanol both increase sedation. Use Caution/Monitor.

• etomidate

  etomidate and amoxapine both increase sedation. Use Caution/Monitor.

• ezogabine

  ezogabine, amoxapine. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Slight and transient QT-prolongation observed with ezogabine, particularly when dose titrated to 1200 mg/day. QT interval should be monitored when ezogabine is prescribed with agents known to increase QT interval.

• fedratinib

  fedratinib will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Adjust dose of drugs that are CYP2D6 substrates as necessary.

• fenfluramine

  amoxapine increases and fenfluramine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine and fenfluramine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  fenfluramine, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration with drugs that increase serotoninergic effects may increase the risk of serotonin syndrome.

• fesoterodine

  fesoterodine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• flavoxate

  flavoxate and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• flecainide

  amoxapine and flecainide both increase QTc interval. Modify Therapy/Monitor Closely.

• fluoxetine

  amoxapine and fluoxetine both increase QTc interval. Modify Therapy/Monitor Closely.

• fluphenazine

  fluphenazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  fluphenazine and amoxapine both increase sedation. Use Caution/Monitor.

• flurazepam

  flurazepam and amoxapine both increase sedation. Use Caution/Monitor.

• fluvoxamine

  fluvoxamine and amoxapine both increase QTc interval. Modify Therapy/Monitor Closely.

• formoterol

  amoxapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• foscarnet

  amoxapine and foscarnet both increase QTc interval. Modify Therapy/Monitor Closely.

• frovatriptan

  frovatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• gabapentin

  gabapentin, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• gabapentin enacarbil

  gabapentin enacarbil, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• galantamine

  galantamine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• ganaxolone

  amoxapine and ganaxolone both increase sedation. Use Caution/Monitor.

• glycopyrrolate

  glycopyrrolate and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine increases levels of glycopyrrolate by unknown mechanism. Use Caution/Monitor.

• glycopyrrolate inhaled

  glycopyrrolate inhaled and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine increases levels of glycopyrrolate inhaled by unknown mechanism. Use Caution/Monitor.

• glycopyrronium tosylate topical

  glycopyrronium tosylate topical, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration of glycopyrronium tosylate topical with other anticholinergic medications may result in additive anticholinergic adverse effects.

• haloperidol

  haloperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  haloperidol and amoxapine both increase sedation. Use Caution/Monitor.

• henbane

  henbane and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• homatropine

  homatropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• huperzine A

  huperzine A increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• hydrocodone

  hydrocodone, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• hydromorphone

  hydromorphone and amoxapine both increase sedation. Use Caution/Monitor.

• hydroxyzine

  hydroxyzine and amoxapine both increase sedation. Use Caution/Monitor.

• hyoscyamine

  hyoscyamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• hyoscyamine spray

  hyoscyamine spray and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• iloperidone

  iloperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  amoxapine and iloperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  iloperidone and amoxapine both increase sedation. Use Caution/Monitor.

• imipramine

  amoxapine and imipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and imipramine both increase sedation. Use Caution/Monitor.

• indacaterol, inhaled

  indacaterol, inhaled, amoxapine. QTc interval. Use Caution/Monitor. Indacaterol should be administered with extreme caution to patients treated with TCAs. Drugs that are known to prolong the QTc interval may have an increased the risk of ventricular arrhythmias.

• ioflupane I 123

  amoxapine decreases effects of ioflupane I 123 by receptor binding competition. Use Caution/Monitor. Drugs that bind to dopamine transporter receptor with high affinity may interfere with the image following ioflupane I123 administration.

• ipratropium

  ipratropium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Due to the poor systemic absorption of ipratropium, interaction unlikely at regularly recommended dosages.

• isoniazid

  amoxapine and isoniazid both increase serotonin levels. Modify Therapy/Monitor Closely.

• isoproterenol

  amoxapine increases and isoproterenol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• ketamine

  ketamine and amoxapine both increase sedation. Use Caution/Monitor.

• ketotifen, ophthalmic

  amoxapine and ketotifen, ophthalmic both increase sedation. Use Caution/Monitor.

• L-tryptophan

  amoxapine and L-tryptophan both increase serotonin levels. Modify Therapy/Monitor Closely.

• lapatinib

  amoxapine and lapatinib both increase QTc interval. Modify Therapy/Monitor Closely.

• lasmiditan

  lasmiditan, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor. Coadministration of lasmiditan and other CNS depressant drugs, including alcohol have not been evaluated in clinical studies. Lasmiditan may cause sedation, as well as other cognitive and/or neuropsychiatric adverse reactions.
  
  amoxapine increases effects of lasmiditan by serotonin levels. Use Caution/Monitor. Coadministration may increase risk of serotonin syndrome.

• lemborexant

  lemborexant, amoxapine. Either increases effects of the other by sedation. Modify Therapy/Monitor Closely. Dosage adjustment may be necessary if lemborexant is coadministered with other CNS depressants because of potentially additive effects.

• levalbuterol

  amoxapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• levofloxacin

  amoxapine and levofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.

• levorphanol

  levorphanol and amoxapine both increase sedation. Use Caution/Monitor.

• lisdexamfetamine

  amoxapine increases and lisdexamfetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine, lisdexamfetamine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Initiate with lower doses and monitor for signs and symptoms of serotonin syndrome, particularly during initiation or dosage increase. If serotonin syndrome occurs, discontinue along with concomitant serotonergic drug(s).

• lithium

  amoxapine and lithium both increase serotonin levels. Modify Therapy/Monitor Closely.

• lofepramine

  amoxapine and lofepramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and lofepramine both increase sedation. Use Caution/Monitor.

• lofexidine

  amoxapine and lofexidine both increase sedation. Use Caution/Monitor.
  
  amoxapine decreases effects of lofexidine by unspecified interaction mechanism. Use Caution/Monitor.

• loprazolam

  loprazolam and amoxapine both increase sedation. Use Caution/Monitor.

• lorazepam

  lorazepam and amoxapine both increase sedation. Use Caution/Monitor.

• lorcaserin

  lorcaserin will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• lormetazepam

  lormetazepam and amoxapine both increase sedation. Use Caution/Monitor.

• loxapine

  loxapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  loxapine and amoxapine both increase sedation. Use Caution/Monitor.

• loxapine inhaled

  loxapine inhaled and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  loxapine inhaled and amoxapine both increase sedation. Use Caution/Monitor.

• lsd

  amoxapine and lsd both increase serotonin levels. Modify Therapy/Monitor Closely.

• lurasidone

  amoxapine, lurasidone. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Potential for additive CNS effects .
  
  lurasidone and amoxapine both increase pharmacodynamic synergism. Use Caution/Monitor. Potential for additive CNS effects

• maprotiline

  amoxapine and maprotiline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and maprotiline both increase sedation. Use Caution/Monitor.

• maraviroc

  maraviroc, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of orthostatic hypotension.

• marijuana

  amoxapine and marijuana both increase sedation. Use Caution/Monitor.

• meclizine

  meclizine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• melatonin

  amoxapine and melatonin both increase sedation. Use Caution/Monitor.

• meperidine

  meperidine and amoxapine both increase sedation. Use Caution/Monitor.

• meprobamate

  amoxapine and meprobamate both increase sedation. Use Caution/Monitor.

• metaproterenol

  amoxapine increases and metaproterenol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• metaxalone

  metaxalone and amoxapine both increase sedation. Use Caution/Monitor.

• methadone

  amoxapine and methadone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  methadone and amoxapine both increase sedation. Use Caution/Monitor.

• methamphetamine

  amoxapine increases and methamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• methocarbamol

  methocarbamol and amoxapine both increase sedation. Use Caution/Monitor.

• methscopolamine

  methscopolamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• methylenedioxymethamphetamine

  amoxapine increases and methylenedioxymethamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• methylphenidate

  amoxapine, methylphenidate. Other (see comment). Use Caution/Monitor. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• metoclopramide

  amoxapine and metoclopramide both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  metoclopramide and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.

• midazolam

  midazolam and amoxapine both increase sedation. Use Caution/Monitor.

• midazolam intranasal

  midazolam intranasal, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Concomitant use of barbiturates, alcohol, or other CNS depressants may increase the risk of hypoventilation, airway obstruction, desaturation, or apnea and may contribute to profound and/or prolonged drug effect.

• midodrine

  amoxapine increases and midodrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• mifepristone

  mifepristone, amoxapine. QTc interval. Modify Therapy/Monitor Closely. Use alternatives if available.

• mirabegron

  mirabegron will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• mirtazapine

  amoxapine and mirtazapine both increase sedation. Use Caution/Monitor.
  
  amoxapine and mirtazapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• modafinil

  amoxapine increases and modafinil decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• morphine

  morphine and amoxapine both increase sedation. Use Caution/Monitor.
  
  amoxapine and morphine both increase serotonin levels. Modify Therapy/Monitor Closely.

• motherwort

  amoxapine and motherwort both increase sedation. Use Caution/Monitor.

• moxonidine

  amoxapine and moxonidine both increase sedation. Use Caution/Monitor.

• nabilone

  amoxapine and nabilone both increase sedation. Use Caution/Monitor.

• nalbuphine

  nalbuphine and amoxapine both increase sedation. Use Caution/Monitor.

• naratriptan

  naratriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• nefopam

  nefopam, amoxapine. Mechanism: unspecified interaction mechanism. Use Caution/Monitor. Use combination with caution.

• neostigmine

  neostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• norepinephrine

  amoxapine increases and norepinephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
  
  amoxapine increases effects of norepinephrine by unknown mechanism. Use Caution/Monitor.

• nortriptyline

  amoxapine and nortriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and nortriptyline both increase sedation. Use Caution/Monitor.

• ofloxacin

  amoxapine and ofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.

• olanzapine

  olanzapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  olanzapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  olanzapine and amoxapine both increase QTc interval. Use Caution/Monitor.

• oliceridine

  amoxapine, oliceridine. Either increases effects of the other by serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases toxicity of oliceridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Anticholinergic drugs may increase risk of urinary retention and/or severe constipation, which may lead to paralytic ileus. Monitor for signs of urinary retention or reduced gastric motility if oliceridine is coadministered with anticholinergics.

• olodaterol inhaled

  amoxapine and olodaterol inhaled both increase QTc interval. Use Caution/Monitor. TCAs prolong the QTc interval and may potentiate the effects of beta2 agonists on the cardiovascular system; increased risk of ventricular arrhythmias

• onabotulinumtoxinA

  onabotulinumtoxinA and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• opium tincture

  opium tincture and amoxapine both increase sedation. Use Caution/Monitor.

• orphenadrine

  amoxapine and orphenadrine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  orphenadrine and amoxapine both increase sedation. Use Caution/Monitor.

• osimertinib

  osimertinib and amoxapine both increase QTc interval. Use Caution/Monitor. Conduct periodic monitoring with ECGs and electrolytes in patients taking drugs known to prolong the QTc interval.

• oxaliplatin

  oxaliplatin will increase the level or effect of amoxapine by Other (see comment). Use Caution/Monitor. Monitor for ECG changes if therapy is initiated in patients with drugs known to prolong QT interval.

• oxazepam

  oxazepam and amoxapine both increase sedation. Use Caution/Monitor.

• oxybutynin

  oxybutynin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxybutynin topical

  oxybutynin topical and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxybutynin transdermal

  oxybutynin transdermal and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxycodone

  oxycodone and amoxapine both increase sedation. Use Caution/Monitor.

• oxymetazoline intranasal

  amoxapine increases effects of oxymetazoline intranasal by pharmacodynamic synergism. Use Caution/Monitor. TCAs inhibit norepinephrine uptake in adrenergic neurons, thereby increasing synaptic norepinephrine levels. Coadministration with alpha1 agonists may cause increased adrenergic receptor stimulation. When oxymetazoline is combined with intranasal tetracaine for dental anesthesia, avoid or use alternant anesthetic in patients taking TCAs.

• oxymorphone

  oxymorphone and amoxapine both increase sedation. Use Caution/Monitor.

• ozanimod

  ozanimod and amoxapine both increase QTc interval. Modify Therapy/Monitor Closely. The potential additive effects on heart rate, treatment with ozanimod should generally not be initiated in patients who are concurrently treated with QT prolonging drugs with known arrhythmogenic properties.

• paliperidone

  paliperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  amoxapine and paliperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  paliperidone and amoxapine both increase sedation. Use Caution/Monitor.

• pancuronium

  pancuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• papaveretum

  papaveretum and amoxapine both increase sedation. Use Caution/Monitor.

• papaverine

  amoxapine and papaverine both increase sedation. Use Caution/Monitor.

• paroxetine

  amoxapine and paroxetine both increase QTc interval. Modify Therapy/Monitor Closely.

• pasireotide

  amoxapine and pasireotide both increase QTc interval. Modify Therapy/Monitor Closely.

• pazopanib

  amoxapine and pazopanib both increase QTc interval. Use Caution/Monitor.

• peginterferon alfa 2b

  peginterferon alfa 2b, amoxapine. Other (see comment). Use Caution/Monitor. Comment: When patients are administered peginterferon alpha-2b with CYP2D6 substrates, the therapeutic effect of these drugs may be altered. Peginterferon alpha-2b may increase or decrease levels of CYP2D6 substrate.

• pentazocine

  pentazocine and amoxapine both increase sedation. Use Caution/Monitor.
  
  amoxapine and pentazocine both increase serotonin levels. Modify Therapy/Monitor Closely.

• pentobarbital

  pentobarbital and amoxapine both increase sedation. Use Caution/Monitor.

• perphenazine

  perphenazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  perphenazine and amoxapine both increase sedation. Use Caution/Monitor.

• phendimetrazine

  amoxapine increases and phendimetrazine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• phenobarbital

  phenobarbital and amoxapine both increase sedation. Use Caution/Monitor.

• phentermine

  amoxapine increases and phentermine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• phenylephrine

  amoxapine increases and phenylephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• phenylephrine ophthalmic

  amoxapine, phenylephrine ophthalmic. Other (see comment). Use Caution/Monitor. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine PO

  amoxapine increases and phenylephrine PO decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. .

• pholcodine

  amoxapine and pholcodine both increase sedation. Use Caution/Monitor.

• physostigmine

  physostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• pilocarpine

  pilocarpine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• pimozide

  pimozide and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  pimozide and amoxapine both increase sedation. Use Caution/Monitor.

• pirbuterol

  amoxapine increases and pirbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• posaconazole

  amoxapine and posaconazole both increase QTc interval. Modify Therapy/Monitor Closely.

• pralidoxime

  pralidoxime and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• pregabalin

  pregabalin, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• primidone

  primidone and amoxapine both increase sedation. Use Caution/Monitor.

• prochlorperazine

  prochlorperazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  prochlorperazine and amoxapine both increase QTc interval. Use Caution/Monitor.
  
  prochlorperazine and amoxapine both increase sedation. Use Caution/Monitor.

• promethazine

  promethazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  promethazine and amoxapine both increase QTc interval. Use Caution/Monitor.
  
  promethazine and amoxapine both increase sedation. Use Caution/Monitor.

• propantheline

  propantheline and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• propofol

  propofol and amoxapine both increase sedation. Use Caution/Monitor.

• propylhexedrine

  amoxapine increases and propylhexedrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• protriptyline

  amoxapine and protriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and protriptyline both increase sedation. Use Caution/Monitor.

• pyridostigmine

  pyridostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• quazepam

  quazepam and amoxapine both increase sedation. Use Caution/Monitor.

• quetiapine

  quetiapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  quetiapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  quetiapine, amoxapine. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Avoid use with drugs that prolong QT and in patients with risk factors for prolonged QT interval. Postmarketing cases show QT prolongation with overdose in patients with concomitant illness or with drugs known to cause electrolyte imbalance or prolong QT.

• quinine

  amoxapine and quinine both increase QTc interval. Use Caution/Monitor.

• ramelteon

  amoxapine and ramelteon both increase sedation. Use Caution/Monitor.

• ranolazine

  amoxapine and ranolazine both increase QTc interval. Modify Therapy/Monitor Closely.

• rapacuronium

  rapacuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• remimazolam

  remimazolam, amoxapine. Either increases toxicity of the other by sedation. Modify Therapy/Monitor Closely. Coadministration may result in profound sedation, respiratory depression, coma, and/or death. Continuously monitor vital signs during sedation and recovery period if coadministered. Carefully titrate remimazolam dose if administered with opioid analgesics and/or sedative/hypnotics.

• rifabutin

  rifabutin decreases levels of amoxapine by increasing metabolism. Use Caution/Monitor.

• rilpivirine

  rilpivirine increases toxicity of amoxapine by QTc interval. Use Caution/Monitor. Rilpivirine should be used with caution when co-administered with a drug with a known risk of Torsades de Pointes.

• risperidone

  amoxapine and risperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  risperidone and amoxapine both increase sedation. Use Caution/Monitor.

• rizatriptan

  rizatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• rocuronium

  rocuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• rolapitant

  rolapitant will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Rolapitant may increase plasma concentrations of CYP2D6 substrates for at least 28 days following rolapitant administration.

• romidepsin

  amoxapine and romidepsin both increase QTc interval. Modify Therapy/Monitor Closely.

• salmeterol

  amoxapine increases and salmeterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• SAMe

  amoxapine and SAMe both increase serotonin levels. Modify Therapy/Monitor Closely.

• scopolamine

  scopolamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• scullcap

  amoxapine and scullcap both increase sedation. Use Caution/Monitor.

• secobarbital

  secobarbital and amoxapine both increase sedation. Use Caution/Monitor.

• selpercatinib

  selpercatinib increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• shepherd's purse

  amoxapine and shepherd's purse both increase sedation. Use Caution/Monitor.

• sodium sulfate/?magnesium sulfate/potassium chloride

  sodium sulfate/?magnesium sulfate/potassium chloride increases effects of amoxapine by unknown mechanism. Use Caution/Monitor. Closely monitor for evidence of seizures when using higher dose of magnesium sulfate together with drugs that lower the seizure threshold.

• sodium sulfate/potassium sulfate/magnesium sulfate

  sodium sulfate/potassium sulfate/magnesium sulfate increases effects of amoxapine by unknown mechanism. Use Caution/Monitor. Closely monitor for evidence of seizures when using higher dose of magnesium sulfate together with drugs that lower the seizure threshold.

• sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol

  amoxapine, sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol. Other (see comment). Use Caution/Monitor. Comment: Caution when bowel preps are used with drugs that cause SIADH or NSAIDs; increased risk for water retention or electrolyte imbalance.

• solifenacin

  solifenacin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• sorafenib

  sorafenib and amoxapine both increase QTc interval. Use Caution/Monitor.

• stiripentol

  stiripentol, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor. Concomitant use stiripentol with other CNS depressants, including alcohol, may increase the risk of sedation and somnolence.

• succinylcholine

  succinylcholine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• sufentanil

  sufentanil and amoxapine both increase sedation. Use Caution/Monitor.

• sufentanil SL

  sufentanil SL, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• sulfamethoxazole

  amoxapine and sulfamethoxazole both increase QTc interval. Modify Therapy/Monitor Closely.

• sumatriptan

  sumatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• sumatriptan intranasal

  sumatriptan intranasal and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• suvorexant

  suvorexant and amoxapine both increase sedation. Modify Therapy/Monitor Closely. Dosage adjustments of suvorexant and concomitant CNS depressants may be necessary

• tapentadol

  tapentadol and amoxapine both increase sedation. Use Caution/Monitor.
  
  amoxapine and tapentadol both increase serotonin levels. Modify Therapy/Monitor Closely.

• telavancin

  amoxapine and telavancin both increase QTc interval. Modify Therapy/Monitor Closely.

• temazepam

  temazepam and amoxapine both increase sedation. Use Caution/Monitor.

• terbinafine

  terbinafine will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Assess need to reduce dose of CYP2D6-metabolized drug.

• terbutaline

  amoxapine increases and terbutaline decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• tetrabenazine

  amoxapine and tetrabenazine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.

• thioridazine

  thioridazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  thioridazine and amoxapine both increase sedation. Use Caution/Monitor.

• thiothixene

  thiothixene and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  thiothixene and amoxapine both increase sedation. Use Caution/Monitor.

• tiotropium

  tiotropium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• tolterodine

  tolterodine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• topiramate

  amoxapine and topiramate both increase sedation. Modify Therapy/Monitor Closely.

• tramadol

  tramadol and amoxapine both increase sedation. Use Caution/Monitor.
  
  amoxapine and tramadol both increase serotonin levels. Modify Therapy/Monitor Closely.

• trazodone

  amoxapine and trazodone both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and trazodone both increase sedation. Use Caution/Monitor.

• triazolam

  triazolam and amoxapine both increase sedation. Use Caution/Monitor.

• triclofos

  triclofos and amoxapine both increase sedation. Use Caution/Monitor.

• trifluoperazine

  trifluoperazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  trifluoperazine and amoxapine both increase sedation. Use Caution/Monitor.

• trihexyphenidyl

  trihexyphenidyl and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Potential for additive anticholinergic effects.

• trimethoprim

  amoxapine and trimethoprim both increase QTc interval. Modify Therapy/Monitor Closely.

• trimipramine

  amoxapine and trimipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and trimipramine both increase sedation. Use Caution/Monitor.

• triprolidine

  triprolidine and amoxapine both increase sedation. Use Caution/Monitor.

• tropisetron

  amoxapine and tropisetron both increase QTc interval. Modify Therapy/Monitor Closely.

• trospium chloride

  trospium chloride and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• valerian

  valerian and amoxapine both increase sedation. Use Caution/Monitor.

• vecuronium

  vecuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• venlafaxine

  amoxapine and venlafaxine both increase QTc interval. Modify Therapy/Monitor Closely.

• voclosporin

  voclosporin, amoxapine. Either increases effects of the other by QTc interval. Use Caution/Monitor.

• voriconazole

  amoxapine and voriconazole both increase QTc interval. Modify Therapy/Monitor Closely.

• xylometazoline

  amoxapine increases and xylometazoline decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• yohimbine

  amoxapine increases and yohimbine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• ziconotide

  amoxapine and ziconotide both increase sedation. Use Caution/Monitor.

• ziprasidone

  ziprasidone and amoxapine both increase sedation. Use Caution/Monitor.

• zolmitriptan

  zolmitriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

Minor (71)

• acarbose

  amoxapine increases effects of acarbose by pharmacodynamic synergism. Minor/Significance Unknown.

• amobarbital

  amobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• atropine

  amoxapine increases levels of atropine by unknown mechanism. Minor/Significance Unknown.

• atropine IV/IM

  amoxapine increases levels of atropine IV/IM by unknown mechanism. Minor/Significance Unknown.

• bazedoxifene/conjugated estrogens

  bazedoxifene/conjugated estrogens, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• brimonidine

  amoxapine decreases effects of brimonidine by pharmacodynamic antagonism. Minor/Significance Unknown.

• butabarbital

  butabarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• butalbital

  butalbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• carbamazepine

  carbamazepine decreases levels of amoxapine by increasing metabolism. Minor/Significance Unknown.

• chlorpromazine

  amoxapine, chlorpromazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, chlorpromazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• chlorpropamide

  amoxapine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.

• conjugated estrogens

  conjugated estrogens, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• conjugated estrogens, vaginal

  conjugated estrogens, vaginal, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• desflurane

  desflurane, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• dexmethylphenidate

  dexmethylphenidate increases effects of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• estradiol

  estradiol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• estrogens conjugated synthetic

  estrogens conjugated synthetic, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• estrogens esterified

  estrogens esterified, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens may inhibit hepatic metabolism of tricyclic antidepressants. However, interactions are not common.

• estropipate

  estropipate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• ethinylestradiol

  ethinylestradiol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• etomidate

  etomidate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• eucalyptus

  amoxapine and eucalyptus both increase sedation. Minor/Significance Unknown.

• fluphenazine

  amoxapine, fluphenazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, fluphenazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  fluphenazine, amoxapine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• glimepiride

  amoxapine increases effects of glimepiride by pharmacodynamic synergism. Minor/Significance Unknown.

• glipizide

  amoxapine increases effects of glipizide by pharmacodynamic synergism. Minor/Significance Unknown.

• glyburide

  amoxapine increases effects of glyburide by pharmacodynamic synergism. Minor/Significance Unknown.

• hydroxyprogesterone caproate

  hydroxyprogesterone caproate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• insulin aspart

  amoxapine increases effects of insulin aspart by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin detemir

  amoxapine increases effects of insulin detemir by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin glargine

  amoxapine increases effects of insulin glargine by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin glulisine

  amoxapine increases effects of insulin glulisine by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin lispro

  amoxapine increases effects of insulin lispro by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin NPH

  amoxapine increases effects of insulin NPH by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin regular human

  amoxapine increases effects of insulin regular human by pharmacodynamic synergism. Minor/Significance Unknown.

• isoproterenol

  isoproterenol, amoxapine. Mechanism: unknown. Minor/Significance Unknown. Risk of cardiac arrhythmias.

• ketamine

  ketamine, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• lithium

  lithium, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Risk of neurotoxicity in geriatric pts. Multiple mechanisms involved.

• mestranol

  mestranol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• metformin

  amoxapine increases effects of metformin by pharmacodynamic synergism. Minor/Significance Unknown.

• miglitol

  amoxapine increases effects of miglitol by pharmacodynamic synergism. Minor/Significance Unknown.

• nateglinide

  amoxapine increases effects of nateglinide by pharmacodynamic synergism. Minor/Significance Unknown.

• panax ginseng

  panax ginseng increases effects of amoxapine by pharmacodynamic synergism. Minor/Significance Unknown.

• pentobarbital

  pentobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• perphenazine

  amoxapine, perphenazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, perphenazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• phenobarbital

  phenobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• pioglitazone

  amoxapine increases effects of pioglitazone by pharmacodynamic synergism. Minor/Significance Unknown.

• pleurisy root

  pleurisy root decreases effects of amoxapine by unspecified interaction mechanism. Minor/Significance Unknown. Theoretical interaction.

• primidone

  primidone, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• prochlorperazine

  amoxapine, prochlorperazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, prochlorperazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• progesterone micronized

  progesterone micronized, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• promazine

  amoxapine, promazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, promazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• promethazine

  amoxapine, promethazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, promethazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  promethazine, amoxapine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• propofol

  propofol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• repaglinide

  amoxapine increases effects of repaglinide by pharmacodynamic synergism. Minor/Significance Unknown.

• risperidone

  risperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Minor/Significance Unknown.

• rosiglitazone

  amoxapine increases effects of rosiglitazone by pharmacodynamic synergism. Minor/Significance Unknown.

• sage

  amoxapine and sage both increase sedation. Minor/Significance Unknown.

• saxagliptin

  amoxapine increases effects of saxagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• secobarbital

  secobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• serdexmethylphenidate/dexmethylphenidate

  serdexmethylphenidate/dexmethylphenidate increases effects of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• sevoflurane

  sevoflurane, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• sitagliptin

  amoxapine increases effects of sitagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• sulfamethoxazole

  sulfamethoxazole decreases levels of amoxapine by unspecified interaction mechanism. Minor/Significance Unknown.

• thioridazine

  amoxapine, thioridazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, thioridazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• tolazamide

  amoxapine increases effects of tolazamide by pharmacodynamic synergism. Minor/Significance Unknown.

• tolbutamide

  amoxapine increases effects of tolbutamide by pharmacodynamic synergism. Minor/Significance Unknown.

• trifluoperazine

  amoxapine, trifluoperazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, trifluoperazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• vasopressin

  amoxapine increases effects of vasopressin by pharmacodynamic synergism. Minor/Significance Unknown.

• verapamil

  verapamil increases levels of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• vildagliptin

  amoxapine increases effects of vildagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• zolpidem

  zolpidem, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive CNS depression.

• 5-HTP

  Monitor Closely (1)amoxapine and 5-HTP both increase serotonin levels. Modify Therapy/Monitor Closely.

• abiraterone

  Monitor Closely (1)abiraterone increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Avoid coadministration of abiraterone with substrates of CYP2D6. If alternative therapy cannot be used, exercise caution and consider a dose reduction of the CYP2D6 substrate.

• abobotulinumtoxinA

  Monitor Closely (1)abobotulinumtoxinA increases effects of amoxapine by pharmacodynamic synergism. Use Caution/Monitor. Use of anticholinergic drugs after administration of botulinum toxin-containing products may potentiate systemic anticholinergic effects. .

• acarbose

  Minor (1)amoxapine increases effects of acarbose by pharmacodynamic synergism. Minor/Significance Unknown.

• aclidinium

  Monitor Closely (1)aclidinium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• albuterol

  Monitor Closely (1)amoxapine increases and albuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, albuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• alfentanil

  Monitor Closely (1)alfentanil and amoxapine both increase sedation. Use Caution/Monitor.

• almotriptan

  Monitor Closely (1)almotriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• alprazolam

  Monitor Closely (1)alprazolam and amoxapine both increase sedation. Use Caution/Monitor.

• amifampridine

  Monitor Closely (1)amoxapine increases toxicity of amifampridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Amifampridine can cause seizures. Coadministration with drugs that lower seizure threshold may increase this risk.

• amiodarone

  Serious - Use Alternative (1)amoxapine and amiodarone both increase QTc interval. Avoid or Use Alternate Drug.

• amitriptyline

  Monitor Closely (2)amitriptyline and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amitriptyline and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amitriptyline and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amitriptyline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• amobarbital

  Monitor Closely (1)amobarbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)amobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• anticholinergic/sedative combos

  Monitor Closely (1)anticholinergic/sedative combos and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• apomorphine

  Monitor Closely (1)amoxapine and apomorphine both increase sedation. Use Caution/Monitor.

• arformoterol

  Monitor Closely (1)amoxapine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, arformoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• aripiprazole

  Monitor Closely (3)aripiprazole and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  aripiprazole and amoxapine both increase sedation. Use Caution/Monitor.
  
  aripiprazole and amoxapine both increase QTc interval. Use Caution/Monitor.

• armodafinil

  Monitor Closely (1)amoxapine increases and armodafinil decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• arsenic trioxide

  Serious - Use Alternative (1)amoxapine and arsenic trioxide both increase QTc interval. Avoid or Use Alternate Drug.

• artemether

  Serious - Use Alternative (1)artemether and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• artemether/lumefantrine

  Serious - Use Alternative (1)amoxapine and artemether/lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.

• atazanavir

  Monitor Closely (1)atazanavir increases levels of amoxapine by unspecified interaction mechanism. Use Caution/Monitor.

• atracurium

  Monitor Closely (1)atracurium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• atropine

  Monitor Closely (1)atropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.Minor (1)amoxapine increases levels of atropine by unknown mechanism. Minor/Significance Unknown.

• atropine IV/IM

  Monitor Closely (1)atropine IV/IM and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.Minor (1)amoxapine increases levels of atropine IV/IM by unknown mechanism. Minor/Significance Unknown.

• azelastine

  Monitor Closely (1)azelastine and amoxapine both increase sedation. Use Caution/Monitor.

• azithromycin

  Monitor Closely (1)amoxapine and azithromycin both increase QTc interval. Use Caution/Monitor.

• baclofen

  Monitor Closely (1)baclofen and amoxapine both increase sedation. Use Caution/Monitor.

• bazedoxifene/conjugated estrogens

  Minor (1)bazedoxifene/conjugated estrogens, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• bedaquiline

  Monitor Closely (1)amoxapine and bedaquiline both increase QTc interval. Modify Therapy/Monitor Closely. ECG should be monitored closely

• belladonna alkaloids

  Monitor Closely (1)belladonna alkaloids and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• belladonna and opium

  Monitor Closely (2)belladonna and opium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  belladonna and opium and amoxapine both increase sedation. Use Caution/Monitor.

• benperidol

  Monitor Closely (2)benperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  benperidol and amoxapine both increase sedation. Use Caution/Monitor.

• benzhydrocodone/acetaminophen

  Monitor Closely (1)benzhydrocodone/acetaminophen, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• benzphetamine

  Monitor Closely (1)amoxapine increases and benzphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, benzphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• benztropine

  Monitor Closely (1)benztropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Additive anticholinergic adverse effects may be seen with concurrent use.

• bethanechol

  Monitor Closely (1)bethanechol increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• brimonidine

  Minor (1)amoxapine decreases effects of brimonidine by pharmacodynamic antagonism. Minor/Significance Unknown.

• brompheniramine

  Monitor Closely (1)brompheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine

  Monitor Closely (1)buprenorphine and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine buccal

  Monitor Closely (1)buprenorphine buccal and amoxapine both increase sedation. Use Caution/Monitor.

• buprenorphine subdermal implant

  Monitor Closely (1)amoxapine, buprenorphine subdermal implant. Either increases toxicity of the other by serotonin levels. Use Caution/Monitor. Concomitant use could result in life-threatening serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation, and during dose adjustment of the serotonergic drug. Discontinue buprenorphine if serotonin syndrome is suspected.

• buprenorphine, long-acting injection

  Monitor Closely (1)amoxapine, buprenorphine, long-acting injection. Either increases toxicity of the other by serotonin levels. Use Caution/Monitor. Concomitant use could result in life-threatening serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation, and during dose adjustment of the serotonergic drug. Discontinue buprenorphine if serotonin syndrome is suspected.

• bupropion

  Monitor Closely (2)amoxapine increases toxicity of bupropion by unspecified interaction mechanism. Use Caution/Monitor. May lower seizure threshold; keep bupropion dose as low as possible.
  
  bupropion will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• buspirone

  Serious - Use Alternative (1)amoxapine and buspirone both increase serotonin levels. Avoid or Use Alternate Drug.

• butabarbital

  Monitor Closely (1)butabarbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)butabarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• butalbital

  Monitor Closely (1)butalbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)butalbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• butorphanol

  Monitor Closely (1)butorphanol and amoxapine both increase sedation. Use Caution/Monitor.

• caffeine

  Monitor Closely (1)amoxapine increases and caffeine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• calcium/magnesium/potassium/sodium oxybates

  Serious - Use Alternative (1)amoxapine, calcium/magnesium/potassium/sodium oxybates. Either increases effects of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Profound sedation, respiratory depression, coma, and death may result if coadministered. Reserve concomitant prescribing of these drugs in patients for whom other treatment options are inadequate. Limit dosages and durations to the minimum required. Monitor closely for signs of respiratory depression and sedation.

• carbachol

  Monitor Closely (1)carbachol increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• carbamazepine

  Minor (1)carbamazepine decreases levels of amoxapine by increasing metabolism. Minor/Significance Unknown.

• carbinoxamine

  Monitor Closely (1)carbinoxamine and amoxapine both increase sedation. Use Caution/Monitor.

• carisoprodol

  Monitor Closely (1)carisoprodol and amoxapine both increase sedation. Use Caution/Monitor.

• cenobamate

  Monitor Closely (1)cenobamate, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor.

• cevimeline

  Monitor Closely (1)cevimeline increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• chloral hydrate

  Monitor Closely (1)chloral hydrate and amoxapine both increase sedation. Use Caution/Monitor.

• chlordiazepoxide

  Monitor Closely (1)chlordiazepoxide and amoxapine both increase sedation. Use Caution/Monitor.

• chloroquine

  Monitor Closely (1)chloroquine increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• chlorpheniramine

  Monitor Closely (1)chlorpheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• chlorpromazine

  Monitor Closely (2)chlorpromazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  chlorpromazine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)chlorpromazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (2)amoxapine, chlorpromazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, chlorpromazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• chlorpropamide

  Minor (1)amoxapine increases effects of chlorpropamide by pharmacodynamic synergism. Minor/Significance Unknown.

• chlorzoxazone

  Monitor Closely (1)chlorzoxazone and amoxapine both increase sedation. Use Caution/Monitor.

• cinnarizine

  Monitor Closely (1)cinnarizine and amoxapine both increase sedation. Use Caution/Monitor.

• cisatracurium

  Monitor Closely (1)cisatracurium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• citalopram

  Monitor Closely (1)citalopram and amoxapine both increase QTc interval. Use Caution/Monitor.Serious - Use Alternative (1)citalopram and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug. Citalopram may increase TCA levels. Increased risk of serotonin syndrome or neuroleptic malignant syndrome. Potential risk for QT prolongation. ECG monitoring is recommended.

• clarithromycin

  Serious - Use Alternative (1)amoxapine and clarithromycin both increase QTc interval. Avoid or Use Alternate Drug.

• clemastine

  Monitor Closely (1)clemastine and amoxapine both increase sedation. Use Caution/Monitor.

• clobazam

  Monitor Closely (2)clobazam will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Lower doses of drugs metabolized by CYP2D6 may be required when used concomitantly.
  
  amoxapine, clobazam. Other (see comment). Use Caution/Monitor. Comment: Concomitant administration can increase the potential for CNS effects (e.g., increased sedation or respiratory depression).

• clomipramine

  Monitor Closely (2)amoxapine and clomipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and clomipramine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and clomipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and clomipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• clonazepam

  Monitor Closely (1)clonazepam and amoxapine both increase sedation. Use Caution/Monitor.

• clonidine

  Serious - Use Alternative (1)amoxapine decreases effects of clonidine by Other (see comment). Avoid or Use Alternate Drug. Comment: Inhibition of uptake by adrenergic neurons.

• clorazepate

  Monitor Closely (1)clorazepate and amoxapine both increase sedation. Use Caution/Monitor.

• clozapine

  Monitor Closely (3)clozapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  clozapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  clozapine and amoxapine both increase QTc interval. Use Caution/Monitor.

• cobicistat

  Monitor Closely (2)cobicistat will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Carefully titrate antidepressant to the desired effect, including using the lowest feasible initial or maintenance dose, and monitoring for antidepressant response
  
  cobicistat will increase the level or effect of amoxapine by Other (see comment). Use Caution/Monitor. Carefully titrate dose of the antidepressant to the desired effect, including using the lowest feasible initial or maintenance dose, and monitor its response during coadministration with TCAs and cobicistat.

• cocaine

  Monitor Closely (1)amoxapine and cocaine both increase serotonin levels. Modify Therapy/Monitor Closely.

• codeine

  Monitor Closely (1)codeine and amoxapine both increase sedation. Use Caution/Monitor.

• conjugated estrogens

  Minor (1)conjugated estrogens, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• conjugated estrogens, vaginal

  Minor (1)conjugated estrogens, vaginal, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• crizotinib

  Monitor Closely (1)crizotinib and amoxapine both increase QTc interval. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

• cyclizine

  Monitor Closely (2)cyclizine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  cyclizine and amoxapine both increase sedation. Use Caution/Monitor.

• cyclobenzaprine

  Monitor Closely (2)cyclobenzaprine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  cyclobenzaprine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and cyclobenzaprine both increase serotonin levels. Avoid or Use Alternate Drug.

• cyproheptadine

  Monitor Closely (1)cyproheptadine and amoxapine both increase sedation. Use Caution/Monitor.

• dacomitinib

  Serious - Use Alternative (1)dacomitinib will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Avoid or Use Alternate Drug. Avoid use with CYP2D6 substrates where minimal increases in concentration of the CYP2D6 substrate may lead to serious or life-threatening toxicities.

• dantrolene

  Monitor Closely (1)dantrolene and amoxapine both increase sedation. Use Caution/Monitor.

• daridorexant

  Monitor Closely (1)amoxapine and daridorexant both increase sedation. Modify Therapy/Monitor Closely. Coadministration increases risk of CNS depression, which can lead to additive impairment of psychomotor performance and cause daytime impairment.

• darifenacin

  Monitor Closely (1)darifenacin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• dasatinib

  Monitor Closely (1)amoxapine and dasatinib both increase QTc interval. Modify Therapy/Monitor Closely.

• debrisoquine

  Monitor Closely (1)amoxapine decreases effects of debrisoquine by Other (see comment). Use Caution/Monitor. Comment: Inhibition of uptake by adrenergic neurons.

• desflurane

  Monitor Closely (1)desflurane and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)desflurane, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• desipramine

  Monitor Closely (2)amoxapine and desipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and desipramine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and desipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and desipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• desvenlafaxine

  Serious - Use Alternative (1)amoxapine and desvenlafaxine both increase serotonin levels. Avoid or Use Alternate Drug.

• deutetrabenazine

  Monitor Closely (2)amoxapine and deutetrabenazine both increase sedation. Use Caution/Monitor.
  
  deutetrabenazine and amoxapine both increase QTc interval. Use Caution/Monitor.

• dexchlorpheniramine

  Monitor Closely (1)dexchlorpheniramine and amoxapine both increase sedation. Use Caution/Monitor.

• dexfenfluramine

  Monitor Closely (2)amoxapine and dexfenfluramine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases and dexfenfluramine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dexfenfluramine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dexmedetomidine

  Monitor Closely (1)dexmedetomidine and amoxapine both increase sedation. Use Caution/Monitor.

• dexmethylphenidate

  Monitor Closely (1)amoxapine increases and dexmethylphenidate decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dexmethylphenidate. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.Minor (1)dexmethylphenidate increases effects of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• dextroamphetamine

  Monitor Closely (3)amoxapine increases effects of dextroamphetamine by unknown mechanism. Use Caution/Monitor.
  
  amoxapine and dextroamphetamine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases and dextroamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dextroamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dextroamphetamine transdermal

  Monitor Closely (1)amoxapine will increase the level or effect of dextroamphetamine transdermal by pharmacodynamic synergism. Modify Therapy/Monitor Closely. May enhance the activity of tricyclic or sympathomimetic agents causing striking and sustained increases in dextroamphetamine levels in brain; May be potentiate cardiovascular effects. Monitor frequently and adjust or use an alternant based on clinical response.

• dextromethorphan

  Serious - Use Alternative (1)amoxapine and dextromethorphan both increase serotonin levels. Avoid or Use Alternate Drug.

• dextromoramide

  Monitor Closely (1)dextromoramide and amoxapine both increase sedation. Use Caution/Monitor.

• diamorphine

  Monitor Closely (1)diamorphine and amoxapine both increase sedation. Use Caution/Monitor.

• diazepam

  Monitor Closely (1)diazepam and amoxapine both increase sedation. Use Caution/Monitor.

• diazepam intranasal

  Monitor Closely (1)diazepam intranasal, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration may potentiate the CNS-depressant effects of each drug.

• dicyclomine

  Monitor Closely (1)dicyclomine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• diethylpropion

  Monitor Closely (1)amoxapine increases and diethylpropion decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, diethylpropion. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• difelikefalin

  Monitor Closely (1)difelikefalin and amoxapine both increase sedation. Use Caution/Monitor.

• difenoxin hcl

  Monitor Closely (1)difenoxin hcl and amoxapine both increase sedation. Use Caution/Monitor.

• dihydroergotamine

  Monitor Closely (1)amoxapine and dihydroergotamine both increase serotonin levels. Modify Therapy/Monitor Closely.

• dihydroergotamine intranasal

  Monitor Closely (1)amoxapine and dihydroergotamine intranasal both increase serotonin levels. Modify Therapy/Monitor Closely.

• dimenhydrinate

  Monitor Closely (1)dimenhydrinate and amoxapine both increase sedation. Use Caution/Monitor.

• diphenhydramine

  Monitor Closely (2)diphenhydramine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  diphenhydramine and amoxapine both increase sedation. Use Caution/Monitor.

• diphenoxylate hcl

  Monitor Closely (1)diphenoxylate hcl and amoxapine both increase sedation. Use Caution/Monitor.

• dipipanone

  Monitor Closely (1)dipipanone and amoxapine both increase sedation. Use Caution/Monitor.

• disopyramide

  Contraindicated (1)amoxapine and disopyramide both increase QTc interval. Contraindicated.

• dobutamine

  Monitor Closely (1)amoxapine increases and dobutamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dobutamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dofetilide

  Monitor Closely (1)dofetilide increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and dofetilide both increase QTc interval. Avoid or Use Alternate Drug.

• dolasetron

  Monitor Closely (1)amoxapine and dolasetron both increase QTc interval. Modify Therapy/Monitor Closely.Serious - Use Alternative (1)dolasetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• donepezil

  Monitor Closely (1)donepezil increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)donepezil and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• dopamine

  Monitor Closely (1)amoxapine increases and dopamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dopamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dopexamine

  Monitor Closely (1)amoxapine increases and dopexamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, dopexamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• dosulepin

  Monitor Closely (2)amoxapine and dosulepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and dosulepin both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and dosulepin both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and dosulepin both increase serotonin levels. Avoid or Use Alternate Drug.

• doxepin

  Monitor Closely (2)amoxapine and doxepin both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and doxepin both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and doxepin both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and doxepin both increase serotonin levels. Avoid or Use Alternate Drug.

• doxylamine

  Monitor Closely (1)doxylamine and amoxapine both increase sedation. Use Caution/Monitor.

• dronedarone

  Serious - Use Alternative (1)amoxapine and dronedarone both increase QTc interval. Avoid or Use Alternate Drug.

• droperidol

  Monitor Closely (2)droperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  droperidol and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and droperidol both increase QTc interval. Avoid or Use Alternate Drug.

• duloxetine

  Serious - Use Alternative (1)duloxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• echothiophate iodide

  Monitor Closely (1)echothiophate iodide increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• eletriptan

  Monitor Closely (1)eletriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• eliglustat

  Monitor Closely (1)eliglustat increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Monitor therapeutic drug concentrations, as indicated, or consider reducing the dosage of the concomitant drug and titrate to clinical effect.

• elvitegravir/cobicistat/emtricitabine/tenofovir DF

  Monitor Closely (1)elvitegravir/cobicistat/emtricitabine/tenofovir DF increases levels of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Cobicistat is a CYP2D6 inhibitor; caution with CYP2D6 substrates for which elevated plasma concentrations are associated with serious and/or life-threatening events.

• ephedrine

  Monitor Closely (2)amoxapine increases effects of ephedrine by unknown mechanism. Use Caution/Monitor.
  
  amoxapine increases and ephedrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, ephedrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• epinephrine

  Monitor Closely (2)amoxapine increases effects of epinephrine by unknown mechanism. Use Caution/Monitor.
  
  amoxapine increases and epinephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (2)epinephrine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, epinephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• epinephrine inhaled

  Monitor Closely (1)amoxapine and epinephrine inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. Tricyclic antidepressants may potentiate epinephrine effect on cardiovascular system.

• epinephrine racemic

  Monitor Closely (2)amoxapine increases effects of epinephrine racemic by unknown mechanism. Use Caution/Monitor.
  
  amoxapine increases and epinephrine racemic decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (2)epinephrine racemic and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, epinephrine racemic. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• ergotamine

  Monitor Closely (1)amoxapine and ergotamine both increase serotonin levels. Modify Therapy/Monitor Closely.

• erythromycin base

  Serious - Use Alternative (1)amoxapine and erythromycin base both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin ethylsuccinate

  Serious - Use Alternative (1)amoxapine and erythromycin ethylsuccinate both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin lactobionate

  Serious - Use Alternative (1)amoxapine and erythromycin lactobionate both increase QTc interval. Avoid or Use Alternate Drug.

• erythromycin stearate

  Serious - Use Alternative (1)amoxapine and erythromycin stearate both increase QTc interval. Avoid or Use Alternate Drug.

• escitalopram

  Monitor Closely (1)escitalopram increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.Serious - Use Alternative (1)escitalopram and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• esketamine intranasal

  Monitor Closely (1)esketamine intranasal, amoxapine. Either increases toxicity of the other by sedation. Modify Therapy/Monitor Closely.

• estazolam

  Monitor Closely (1)estazolam and amoxapine both increase sedation. Use Caution/Monitor.

• estradiol

  Minor (1)estradiol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• estrogens conjugated synthetic

  Minor (1)estrogens conjugated synthetic, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• estrogens esterified

  Minor (1)estrogens esterified, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens may inhibit hepatic metabolism of tricyclic antidepressants. However, interactions are not common.

• estropipate

  Minor (1)estropipate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• ethanol

  Monitor Closely (1)amoxapine and ethanol both increase sedation. Use Caution/Monitor.

• ethinylestradiol

  Minor (1)ethinylestradiol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• etomidate

  Monitor Closely (1)etomidate and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)etomidate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• eucalyptus

  Minor (1)amoxapine and eucalyptus both increase sedation. Minor/Significance Unknown.

• ezogabine

  Monitor Closely (1)ezogabine, amoxapine. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Slight and transient QT-prolongation observed with ezogabine, particularly when dose titrated to 1200 mg/day. QT interval should be monitored when ezogabine is prescribed with agents known to increase QT interval.

• fedratinib

  Monitor Closely (1)fedratinib will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Adjust dose of drugs that are CYP2D6 substrates as necessary.

• fenfluramine

  Monitor Closely (3)fenfluramine, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration with drugs that increase serotoninergic effects may increase the risk of serotonin syndrome.
  
  amoxapine and fenfluramine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases and fenfluramine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, fenfluramine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• fesoterodine

  Monitor Closely (1)fesoterodine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• fexinidazole

  Serious - Use Alternative (1)fexinidazole and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of fexinidazole with drugs known to block potassium channels or prolong QT interval.

• flavoxate

  Monitor Closely (1)flavoxate and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• flecainide

  Monitor Closely (1)amoxapine and flecainide both increase QTc interval. Modify Therapy/Monitor Closely.

• fluconazole

  Serious - Use Alternative (1)amoxapine and fluconazole both increase QTc interval. Avoid or Use Alternate Drug.

• fluoxetine

  Monitor Closely (1)amoxapine and fluoxetine both increase QTc interval. Modify Therapy/Monitor Closely.Serious - Use Alternative (1)fluoxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• fluphenazine

  Monitor Closely (2)fluphenazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  fluphenazine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)fluphenazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (3)amoxapine, fluphenazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, fluphenazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  fluphenazine, amoxapine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• flurazepam

  Monitor Closely (1)flurazepam and amoxapine both increase sedation. Use Caution/Monitor.

• fluvoxamine

  Monitor Closely (1)fluvoxamine and amoxapine both increase QTc interval. Modify Therapy/Monitor Closely.Serious - Use Alternative (1)fluvoxamine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• formoterol

  Monitor Closely (1)amoxapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• fosamprenavir

  Serious - Use Alternative (1)fosamprenavir increases levels of amoxapine by decreasing metabolism. Avoid or Use Alternate Drug.

• foscarnet

  Monitor Closely (1)amoxapine and foscarnet both increase QTc interval. Modify Therapy/Monitor Closely.

• frovatriptan

  Monitor Closely (1)frovatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• gabapentin

  Monitor Closely (1)gabapentin, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• gabapentin enacarbil

  Monitor Closely (1)gabapentin enacarbil, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• galantamine

  Monitor Closely (1)galantamine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• ganaxolone

  Monitor Closely (1)amoxapine and ganaxolone both increase sedation. Use Caution/Monitor.

• givosiran

  Serious - Use Alternative (1)givosiran will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Avoid or Use Alternate Drug. Avoid coadministration of sensitive CYP2D6 substrates with givosiran. If unavoidable, decrease the CYP2D6 substrate dosage in accordance with approved product labeling.

• glimepiride

  Minor (1)amoxapine increases effects of glimepiride by pharmacodynamic synergism. Minor/Significance Unknown.

• glipizide

  Minor (1)amoxapine increases effects of glipizide by pharmacodynamic synergism. Minor/Significance Unknown.

• glyburide

  Minor (1)amoxapine increases effects of glyburide by pharmacodynamic synergism. Minor/Significance Unknown.

• glycopyrrolate

  Monitor Closely (2)glycopyrrolate and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine increases levels of glycopyrrolate by unknown mechanism. Use Caution/Monitor.

• glycopyrrolate inhaled

  Monitor Closely (2)glycopyrrolate inhaled and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine increases levels of glycopyrrolate inhaled by unknown mechanism. Use Caution/Monitor.

• glycopyrronium tosylate topical

  Monitor Closely (1)glycopyrronium tosylate topical, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration of glycopyrronium tosylate topical with other anticholinergic medications may result in additive anticholinergic adverse effects.

• granisetron

  Serious - Use Alternative (1)granisetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• guanfacine

  Serious - Use Alternative (1)amoxapine decreases effects of guanfacine by Other (see comment). Avoid or Use Alternate Drug. Comment: Inhibition of uptake by adrenergic neurons.

• haloperidol

  Monitor Closely (2)haloperidol and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  haloperidol and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and haloperidol both increase QTc interval. Avoid or Use Alternate Drug.

• henbane

  Monitor Closely (1)henbane and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• homatropine

  Monitor Closely (1)homatropine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• huperzine A

  Monitor Closely (1)huperzine A increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• hydrocodone

  Monitor Closely (1)hydrocodone, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• hydromorphone

  Monitor Closely (1)hydromorphone and amoxapine both increase sedation. Use Caution/Monitor.

• hydroxychloroquine sulfate

  Serious - Use Alternative (1)hydroxychloroquine sulfate and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• hydroxyprogesterone caproate

  Minor (1)hydroxyprogesterone caproate, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• hydroxyzine

  Monitor Closely (1)hydroxyzine and amoxapine both increase sedation. Use Caution/Monitor.

• hyoscyamine

  Monitor Closely (1)hyoscyamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• hyoscyamine spray

  Monitor Closely (1)hyoscyamine spray and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• ibutilide

  Contraindicated (1)amoxapine and ibutilide both increase QTc interval. Contraindicated.

• iloperidone

  Monitor Closely (3)iloperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  amoxapine and iloperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  iloperidone and amoxapine both increase sedation. Use Caution/Monitor.

• imipramine

  Monitor Closely (2)amoxapine and imipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and imipramine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and imipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and imipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• indacaterol, inhaled

  Monitor Closely (1)indacaterol, inhaled, amoxapine. QTc interval. Use Caution/Monitor. Indacaterol should be administered with extreme caution to patients treated with TCAs. Drugs that are known to prolong the QTc interval may have an increased the risk of ventricular arrhythmias.

• indapamide

  Contraindicated (1)amoxapine and indapamide both increase QTc interval. Contraindicated.

• insulin aspart

  Minor (1)amoxapine increases effects of insulin aspart by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin detemir

  Minor (1)amoxapine increases effects of insulin detemir by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin glargine

  Minor (1)amoxapine increases effects of insulin glargine by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin glulisine

  Minor (1)amoxapine increases effects of insulin glulisine by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin lispro

  Minor (1)amoxapine increases effects of insulin lispro by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin NPH

  Minor (1)amoxapine increases effects of insulin NPH by pharmacodynamic synergism. Minor/Significance Unknown.

• insulin regular human

  Minor (1)amoxapine increases effects of insulin regular human by pharmacodynamic synergism. Minor/Significance Unknown.

• iobenguane I 123

  Contraindicated (1)amoxapine decreases effects of iobenguane I 123 by pharmacodynamic antagonism. Contraindicated. If clinically appropriate, discontinue drugs that decrease uptake of NE for at least 5 half-lives; may cause false-negative imaging results.

• iobenguane I 131

  Serious - Use Alternative (1)amoxapine will decrease the level or effect of iobenguane I 131 by Other (see comment). Avoid or Use Alternate Drug. Based on the mechanism of action of iobenguane, drugs that reduce catecholamine uptake or that deplete catecholamine stores may interfere with iobenguane uptake into cells, and thus, reduce iobenguane efficacy. Discontinue interfering drugs for at least 5 half-lives before administration of either the dosimetry or an iobenguane dose. Do not administer these drugs until at least 7 days after each iobenguane dose.

• ioflupane I 123

  Monitor Closely (1)amoxapine decreases effects of ioflupane I 123 by receptor binding competition. Use Caution/Monitor. Drugs that bind to dopamine transporter receptor with high affinity may interfere with the image following ioflupane I123 administration.

• ipratropium

  Monitor Closely (1)ipratropium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Due to the poor systemic absorption of ipratropium, interaction unlikely at regularly recommended dosages.

• isocarboxazid

  Contraindicated (1)isocarboxazid and amoxapine both increase serotonin levels. Contraindicated.

• isoniazid

  Monitor Closely (1)amoxapine and isoniazid both increase serotonin levels. Modify Therapy/Monitor Closely.

• isoproterenol

  Monitor Closely (1)amoxapine increases and isoproterenol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, isoproterenol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.Minor (1)isoproterenol, amoxapine. Mechanism: unknown. Minor/Significance Unknown. Risk of cardiac arrhythmias.

• ivosidenib

  Serious - Use Alternative (1)ivosidenib and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of QTc prolonging drugs with ivosidenib or replace with alternate therapies. If coadministration of a QTc prolonging drug is unavoidable, monitor for increased risk of QTc interval prolongation.

• ketamine

  Monitor Closely (1)ketamine and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)ketamine, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• ketoconazole

  Serious - Use Alternative (1)amoxapine and ketoconazole both increase QTc interval. Avoid or Use Alternate Drug.

• ketotifen, ophthalmic

  Monitor Closely (1)amoxapine and ketotifen, ophthalmic both increase sedation. Use Caution/Monitor.

• L-tryptophan

  Monitor Closely (1)amoxapine and L-tryptophan both increase serotonin levels. Modify Therapy/Monitor Closely.

• lapatinib

  Monitor Closely (1)amoxapine and lapatinib both increase QTc interval. Modify Therapy/Monitor Closely.

• lasmiditan

  Monitor Closely (2)lasmiditan, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor. Coadministration of lasmiditan and other CNS depressant drugs, including alcohol have not been evaluated in clinical studies. Lasmiditan may cause sedation, as well as other cognitive and/or neuropsychiatric adverse reactions.
  
  amoxapine increases effects of lasmiditan by serotonin levels. Use Caution/Monitor. Coadministration may increase risk of serotonin syndrome.

• lemborexant

  Monitor Closely (1)lemborexant, amoxapine. Either increases effects of the other by sedation. Modify Therapy/Monitor Closely. Dosage adjustment may be necessary if lemborexant is coadministered with other CNS depressants because of potentially additive effects.

• levalbuterol

  Monitor Closely (1)amoxapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, levalbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• levofloxacin

  Monitor Closely (1)amoxapine and levofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.

• levoketoconazole

  Serious - Use Alternative (1)amoxapine and levoketoconazole both increase QTc interval. Avoid or Use Alternate Drug.

• levomilnacipran

  Serious - Use Alternative (1)levomilnacipran and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• levorphanol

  Monitor Closely (1)levorphanol and amoxapine both increase sedation. Use Caution/Monitor.

• linezolid

  Contraindicated (1)linezolid and amoxapine both increase serotonin levels. Contraindicated.

• lisdexamfetamine

  Monitor Closely (2)amoxapine, lisdexamfetamine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Initiate with lower doses and monitor for signs and symptoms of serotonin syndrome, particularly during initiation or dosage increase. If serotonin syndrome occurs, discontinue along with concomitant serotonergic drug(s).
  
  amoxapine increases and lisdexamfetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, lisdexamfetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• lithium

  Monitor Closely (1)amoxapine and lithium both increase serotonin levels. Modify Therapy/Monitor Closely.Minor (1)lithium, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Risk of neurotoxicity in geriatric pts. Multiple mechanisms involved.

• lofepramine

  Monitor Closely (2)amoxapine and lofepramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and lofepramine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and lofepramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and lofepramine both increase serotonin levels. Avoid or Use Alternate Drug.

• lofexidine

  Monitor Closely (2)amoxapine decreases effects of lofexidine by unspecified interaction mechanism. Use Caution/Monitor.
  
  amoxapine and lofexidine both increase sedation. Use Caution/Monitor.

• loprazolam

  Monitor Closely (1)loprazolam and amoxapine both increase sedation. Use Caution/Monitor.

• lorazepam

  Monitor Closely (1)lorazepam and amoxapine both increase sedation. Use Caution/Monitor.

• lorcaserin

  Monitor Closely (1)lorcaserin will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• lormetazepam

  Monitor Closely (1)lormetazepam and amoxapine both increase sedation. Use Caution/Monitor.

• loxapine

  Monitor Closely (2)loxapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  loxapine and amoxapine both increase sedation. Use Caution/Monitor.

• loxapine inhaled

  Monitor Closely (2)loxapine inhaled and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  loxapine inhaled and amoxapine both increase sedation. Use Caution/Monitor.

• lsd

  Monitor Closely (1)amoxapine and lsd both increase serotonin levels. Modify Therapy/Monitor Closely.

• lumefantrine

  Serious - Use Alternative (1)amoxapine and lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.

• lurasidone

  Monitor Closely (2)amoxapine, lurasidone. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Potential for additive CNS effects .
  
  lurasidone and amoxapine both increase pharmacodynamic synergism. Use Caution/Monitor. Potential for additive CNS effects

• macimorelin

  Serious - Use Alternative (1)macimorelin and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Macimorelin causes an increase of ~11 msec in the corrected QT interval. Avoid coadministration with drugs that prolong QT interval, which could increase risk for developing torsade de pointes-type ventricular tachycardia. Allow sufficient washout time of drugs that are known to prolong the QT interval before administering macimorelin.

• maprotiline

  Monitor Closely (2)amoxapine and maprotiline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and maprotiline both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and maprotiline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and maprotiline both increase serotonin levels. Avoid or Use Alternate Drug.

• maraviroc

  Monitor Closely (1)maraviroc, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of orthostatic hypotension.

• marijuana

  Monitor Closely (1)amoxapine and marijuana both increase sedation. Use Caution/Monitor.

• meclizine

  Monitor Closely (1)meclizine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• mefloquine

  Serious - Use Alternative (1)mefloquine increases toxicity of amoxapine by QTc interval. Avoid or Use Alternate Drug. Mefloquine may enhance the QTc prolonging effect of high risk QTc prolonging agents.

• melatonin

  Monitor Closely (1)amoxapine and melatonin both increase sedation. Use Caution/Monitor.

• meperidine

  Monitor Closely (1)meperidine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and meperidine both increase serotonin levels. Avoid or Use Alternate Drug.

• meprobamate

  Monitor Closely (1)amoxapine and meprobamate both increase sedation. Use Caution/Monitor.

• mestranol

  Minor (1)mestranol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• metaproterenol

  Monitor Closely (1)amoxapine increases and metaproterenol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, metaproterenol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• metaxalone

  Monitor Closely (1)metaxalone and amoxapine both increase sedation. Use Caution/Monitor.

• metformin

  Minor (1)amoxapine increases effects of metformin by pharmacodynamic synergism. Minor/Significance Unknown.

• methadone

  Monitor Closely (2)amoxapine and methadone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  methadone and amoxapine both increase sedation. Use Caution/Monitor.

• methamphetamine

  Monitor Closely (1)amoxapine increases and methamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, methamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• methocarbamol

  Monitor Closely (1)methocarbamol and amoxapine both increase sedation. Use Caution/Monitor.

• methscopolamine

  Monitor Closely (1)methscopolamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• methylene blue

  Serious - Use Alternative (1)amoxapine and methylene blue both increase serotonin levels. Avoid or Use Alternate Drug. Methylene blue may increase serotonin as a result of MAO-A inhibition. If methylene blue must be administered, discontinue serotonergic drug immediately and monitor for CNS toxicity. Serotonergic therapy may be resumed 24 hours after last methylene blue dose or after 2 weeks of monitoring, whichever comes first.

• methylenedioxymethamphetamine

  Monitor Closely (1)amoxapine increases and methylenedioxymethamphetamine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, methylenedioxymethamphetamine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• methylphenidate

  Monitor Closely (1)amoxapine, methylphenidate. Other (see comment). Use Caution/Monitor. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• metoclopramide

  Monitor Closely (2)amoxapine and metoclopramide both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  metoclopramide and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.

• metoclopramide intranasal

  Serious - Use Alternative (1)amoxapine, metoclopramide intranasal. Either increases effects of the other by Other (see comment). Avoid or Use Alternate Drug. Comment: Avoid use of metoclopramide intranasal or interacting drug, depending on importance of drug to patient.

• midazolam

  Monitor Closely (1)midazolam and amoxapine both increase sedation. Use Caution/Monitor.

• midazolam intranasal

  Monitor Closely (1)midazolam intranasal, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Concomitant use of barbiturates, alcohol, or other CNS depressants may increase the risk of hypoventilation, airway obstruction, desaturation, or apnea and may contribute to profound and/or prolonged drug effect.

• midodrine

  Monitor Closely (1)amoxapine increases and midodrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, midodrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• mifepristone

  Monitor Closely (1)mifepristone, amoxapine. QTc interval. Modify Therapy/Monitor Closely. Use alternatives if available.

• miglitol

  Minor (1)amoxapine increases effects of miglitol by pharmacodynamic synergism. Minor/Significance Unknown.

• milnacipran

  Serious - Use Alternative (1)milnacipran and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• mirabegron

  Monitor Closely (1)mirabegron will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor.

• mirtazapine

  Monitor Closely (2)amoxapine and mirtazapine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine and mirtazapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)mirtazapine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.

• mobocertinib

  Serious - Use Alternative (1)mobocertinib will decrease the level or effect of amoxapine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. If coadministration unavoidable, reduce mobocertinib dose and monitor QTc interval more frequently

• modafinil

  Monitor Closely (1)amoxapine increases and modafinil decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• morphine

  Monitor Closely (2)amoxapine and morphine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  morphine and amoxapine both increase sedation. Use Caution/Monitor.

• motherwort

  Monitor Closely (1)amoxapine and motherwort both increase sedation. Use Caution/Monitor.

• moxifloxacin

  Serious - Use Alternative (1)amoxapine and moxifloxacin both increase QTc interval. Avoid or Use Alternate Drug.

• moxonidine

  Monitor Closely (1)amoxapine and moxonidine both increase sedation. Use Caution/Monitor.

• nabilone

  Monitor Closely (1)amoxapine and nabilone both increase sedation. Use Caution/Monitor.

• nalbuphine

  Monitor Closely (1)nalbuphine and amoxapine both increase sedation. Use Caution/Monitor.

• naratriptan

  Monitor Closely (1)naratriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• nateglinide

  Minor (1)amoxapine increases effects of nateglinide by pharmacodynamic synergism. Minor/Significance Unknown.

• nefazodone

  Serious - Use Alternative (1)nefazodone and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• nefopam

  Monitor Closely (1)nefopam, amoxapine. Mechanism: unspecified interaction mechanism. Use Caution/Monitor. Use combination with caution.

• neostigmine

  Monitor Closely (1)neostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• netupitant/palonosetron

  Serious - Use Alternative (1)netupitant/palonosetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• nilotinib

  Serious - Use Alternative (1)amoxapine and nilotinib both increase QTc interval. Avoid or Use Alternate Drug.

• norepinephrine

  Monitor Closely (2)amoxapine increases effects of norepinephrine by unknown mechanism. Use Caution/Monitor.
  
  amoxapine increases and norepinephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, norepinephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• nortriptyline

  Monitor Closely (2)amoxapine and nortriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and nortriptyline both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and nortriptyline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and nortriptyline both increase serotonin levels. Avoid or Use Alternate Drug.

• octreotide

  Serious - Use Alternative (1)amoxapine and octreotide both increase QTc interval. Avoid or Use Alternate Drug.

• octreotide (Antidote)

  Serious - Use Alternative (1)amoxapine and octreotide (Antidote) both increase QTc interval. Avoid or Use Alternate Drug.

• ofloxacin

  Monitor Closely (1)amoxapine and ofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.

• olanzapine

  Monitor Closely (3)olanzapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  olanzapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  olanzapine and amoxapine both increase QTc interval. Use Caution/Monitor.

• oliceridine

  Monitor Closely (2)amoxapine, oliceridine. Either increases effects of the other by serotonin levels. Modify Therapy/Monitor Closely.
  
  amoxapine increases toxicity of oliceridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Anticholinergic drugs may increase risk of urinary retention and/or severe constipation, which may lead to paralytic ileus. Monitor for signs of urinary retention or reduced gastric motility if oliceridine is coadministered with anticholinergics.

• olodaterol inhaled

  Monitor Closely (1)amoxapine and olodaterol inhaled both increase QTc interval. Use Caution/Monitor. TCAs prolong the QTc interval and may potentiate the effects of beta2 agonists on the cardiovascular system; increased risk of ventricular arrhythmias

• onabotulinumtoxinA

  Monitor Closely (1)onabotulinumtoxinA and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• ondansetron

  Serious - Use Alternative (2)amoxapine and ondansetron both increase QTc interval. Avoid or Use Alternate Drug. Avoid with congenital long QT syndrome; ECG monitoring recommended with concomitant medications that prolong QT interval, electrolyte abnormalities, CHF, or bradyarrhythmias.
  
  ondansetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• opium tincture

  Monitor Closely (1)opium tincture and amoxapine both increase sedation. Use Caution/Monitor.

• orphenadrine

  Monitor Closely (2)amoxapine and orphenadrine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  orphenadrine and amoxapine both increase sedation. Use Caution/Monitor.

• osimertinib

  Monitor Closely (1)osimertinib and amoxapine both increase QTc interval. Use Caution/Monitor. Conduct periodic monitoring with ECGs and electrolytes in patients taking drugs known to prolong the QTc interval.

• oxaliplatin

  Monitor Closely (1)oxaliplatin will increase the level or effect of amoxapine by Other (see comment). Use Caution/Monitor. Monitor for ECG changes if therapy is initiated in patients with drugs known to prolong QT interval.

• oxazepam

  Monitor Closely (1)oxazepam and amoxapine both increase sedation. Use Caution/Monitor.

• oxybutynin

  Monitor Closely (1)oxybutynin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxybutynin topical

  Monitor Closely (1)oxybutynin topical and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxybutynin transdermal

  Monitor Closely (1)oxybutynin transdermal and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• oxycodone

  Monitor Closely (1)oxycodone and amoxapine both increase sedation. Use Caution/Monitor.

• oxymetazoline intranasal

  Monitor Closely (1)amoxapine increases effects of oxymetazoline intranasal by pharmacodynamic synergism. Use Caution/Monitor. TCAs inhibit norepinephrine uptake in adrenergic neurons, thereby increasing synaptic norepinephrine levels. Coadministration with alpha1 agonists may cause increased adrenergic receptor stimulation. When oxymetazoline is combined with intranasal tetracaine for dental anesthesia, avoid or use alternant anesthetic in patients taking TCAs.

• oxymorphone

  Monitor Closely (1)oxymorphone and amoxapine both increase sedation. Use Caution/Monitor.

• ozanimod

  Monitor Closely (1)ozanimod and amoxapine both increase QTc interval. Modify Therapy/Monitor Closely. The potential additive effects on heart rate, treatment with ozanimod should generally not be initiated in patients who are concurrently treated with QT prolonging drugs with known arrhythmogenic properties.Serious - Use Alternative (1)ozanimod increases toxicity of amoxapine by sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Because the active metabolite of ozanimod inhibits MAO-B in vitro, there is a potential for serious adverse reactions, including hypertensive crisis. Therefore, coadministration of ozanimod with drugs that can increase norepinephrine or serotonin is not recommended. Monitor for hypertension with concomitant use.

• paliperidone

  Monitor Closely (3)paliperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  amoxapine and paliperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  paliperidone and amoxapine both increase sedation. Use Caution/Monitor.

• palonosetron

  Serious - Use Alternative (1)palonosetron, amoxapine. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

• panax ginseng

  Minor (1)panax ginseng increases effects of amoxapine by pharmacodynamic synergism. Minor/Significance Unknown.

• pancuronium

  Monitor Closely (1)pancuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• papaveretum

  Monitor Closely (1)papaveretum and amoxapine both increase sedation. Use Caution/Monitor.

• papaverine

  Monitor Closely (1)amoxapine and papaverine both increase sedation. Use Caution/Monitor.

• paroxetine

  Monitor Closely (1)amoxapine and paroxetine both increase QTc interval. Modify Therapy/Monitor Closely.Serious - Use Alternative (1)paroxetine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• pasireotide

  Monitor Closely (1)amoxapine and pasireotide both increase QTc interval. Modify Therapy/Monitor Closely.

• pazopanib

  Monitor Closely (1)amoxapine and pazopanib both increase QTc interval. Use Caution/Monitor.

• peginterferon alfa 2b

  Monitor Closely (1)peginterferon alfa 2b, amoxapine. Other (see comment). Use Caution/Monitor. Comment: When patients are administered peginterferon alpha-2b with CYP2D6 substrates, the therapeutic effect of these drugs may be altered. Peginterferon alpha-2b may increase or decrease levels of CYP2D6 substrate.

• pentamidine

  Contraindicated (1)amoxapine and pentamidine both increase QTc interval. Contraindicated.

• pentazocine

  Monitor Closely (2)amoxapine and pentazocine both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  pentazocine and amoxapine both increase sedation. Use Caution/Monitor.

• pentobarbital

  Monitor Closely (1)pentobarbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)pentobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• perphenazine

  Monitor Closely (2)perphenazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  perphenazine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)perphenazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (2)amoxapine, perphenazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, perphenazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• phendimetrazine

  Monitor Closely (1)amoxapine increases and phendimetrazine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, phendimetrazine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenelzine

  Contraindicated (1)phenelzine and amoxapine both increase serotonin levels. Contraindicated.

• phenobarbital

  Monitor Closely (1)phenobarbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)phenobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• phentermine

  Monitor Closely (1)amoxapine increases and phentermine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, phentermine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine

  Monitor Closely (1)amoxapine increases and phenylephrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, phenylephrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine ophthalmic

  Monitor Closely (1)amoxapine, phenylephrine ophthalmic. Other (see comment). Use Caution/Monitor. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• phenylephrine PO

  Monitor Closely (1)amoxapine increases and phenylephrine PO decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. .Serious - Use Alternative (1)amoxapine, phenylephrine PO. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• pholcodine

  Monitor Closely (1)amoxapine and pholcodine both increase sedation. Use Caution/Monitor.

• physostigmine

  Monitor Closely (1)physostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• pilocarpine

  Monitor Closely (1)pilocarpine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• pimozide

  Contraindicated (1)amoxapine and pimozide both increase QTc interval. Contraindicated.Monitor Closely (2)pimozide and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  pimozide and amoxapine both increase sedation. Use Caution/Monitor.

• pioglitazone

  Minor (1)amoxapine increases effects of pioglitazone by pharmacodynamic synergism. Minor/Significance Unknown.

• pirbuterol

  Monitor Closely (1)amoxapine increases and pirbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, pirbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• pitolisant

  Serious - Use Alternative (1)amoxapine decreases effects of pitolisant by Other (see comment). Avoid or Use Alternate Drug. Comment: Pitolisant increases histamine levels in the brain; therefore, H1 receptor antagonists that cross the blood-brain barrier may reduce the efficacy of pitolisant.

• pleurisy root

  Minor (1)pleurisy root decreases effects of amoxapine by unspecified interaction mechanism. Minor/Significance Unknown. Theoretical interaction.

• posaconazole

  Monitor Closely (1)amoxapine and posaconazole both increase QTc interval. Modify Therapy/Monitor Closely.

• pralidoxime

  Monitor Closely (1)pralidoxime and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• pregabalin

  Monitor Closely (1)pregabalin, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.

• primidone

  Monitor Closely (1)primidone and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)primidone, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• procainamide

  Contraindicated (1)amoxapine and procainamide both increase QTc interval. Contraindicated.

• procarbazine

  Contraindicated (1)procarbazine and amoxapine both increase serotonin levels. Contraindicated. Combination is contraindicated within 2 weeks of MAOI use.

• prochlorperazine

  Monitor Closely (3)prochlorperazine and amoxapine both increase QTc interval. Use Caution/Monitor.
  
  prochlorperazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  prochlorperazine and amoxapine both increase sedation. Use Caution/Monitor.Minor (2)amoxapine, prochlorperazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, prochlorperazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• progesterone micronized

  Minor (1)progesterone micronized, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Estrogens and progestins may decr tricyclic antidepressant effects, while increasing TCA plasma concentration and adverse effects.

• promazine

  Serious - Use Alternative (1)promazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (2)amoxapine, promazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, promazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• promethazine

  Monitor Closely (3)promethazine and amoxapine both increase QTc interval. Use Caution/Monitor.
  
  promethazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  promethazine and amoxapine both increase sedation. Use Caution/Monitor.Minor (3)amoxapine, promethazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, promethazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  promethazine, amoxapine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• propantheline

  Monitor Closely (1)propantheline and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• propofol

  Monitor Closely (1)propofol and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)propofol, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• propylhexedrine

  Monitor Closely (1)amoxapine increases and propylhexedrine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, propylhexedrine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• protriptyline

  Monitor Closely (2)amoxapine and protriptyline both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and protriptyline both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and protriptyline both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and protriptyline both increase serotonin levels. Avoid or Use Alternate Drug.

• pseudoephedrine

  Serious - Use Alternative (1)amoxapine increases effects of pseudoephedrine by sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• pyridostigmine

  Monitor Closely (1)pyridostigmine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• quazepam

  Monitor Closely (1)quazepam and amoxapine both increase sedation. Use Caution/Monitor.

• quetiapine

  Monitor Closely (3)quetiapine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  quetiapine and amoxapine both increase sedation. Use Caution/Monitor.
  
  quetiapine, amoxapine. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Avoid use with drugs that prolong QT and in patients with risk factors for prolonged QT interval. Postmarketing cases show QT prolongation with overdose in patients with concomitant illness or with drugs known to cause electrolyte imbalance or prolong QT.

• quinidine

  Contraindicated (1)quinidine and amoxapine both increase QTc interval. Contraindicated.

• quinine

  Monitor Closely (1)amoxapine and quinine both increase QTc interval. Use Caution/Monitor.

• ramelteon

  Monitor Closely (1)amoxapine and ramelteon both increase sedation. Use Caution/Monitor.

• ranolazine

  Monitor Closely (1)amoxapine and ranolazine both increase QTc interval. Modify Therapy/Monitor Closely.

• rapacuronium

  Monitor Closely (1)rapacuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• rasagiline

  Serious - Use Alternative (1)rasagiline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug. Severe CNS toxicity associated with hyperpyrexia has been reported with the combined treatment of an antidepressant and rasagiline. Avoid combination within 14 days of MAOI use.

• remimazolam

  Monitor Closely (1)remimazolam, amoxapine. Either increases toxicity of the other by sedation. Modify Therapy/Monitor Closely. Coadministration may result in profound sedation, respiratory depression, coma, and/or death. Continuously monitor vital signs during sedation and recovery period if coadministered. Carefully titrate remimazolam dose if administered with opioid analgesics and/or sedative/hypnotics.

• repaglinide

  Minor (1)amoxapine increases effects of repaglinide by pharmacodynamic synergism. Minor/Significance Unknown.

• rifabutin

  Monitor Closely (1)rifabutin decreases levels of amoxapine by increasing metabolism. Use Caution/Monitor.

• rilpivirine

  Monitor Closely (1)rilpivirine increases toxicity of amoxapine by QTc interval. Use Caution/Monitor. Rilpivirine should be used with caution when co-administered with a drug with a known risk of Torsades de Pointes.

• risperidone

  Monitor Closely (2)amoxapine and risperidone both increase QTc interval. Modify Therapy/Monitor Closely.
  
  risperidone and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)risperidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Minor/Significance Unknown.

• rizatriptan

  Monitor Closely (1)rizatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• rocuronium

  Monitor Closely (1)rocuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• rolapitant

  Monitor Closely (1)rolapitant will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Rolapitant may increase plasma concentrations of CYP2D6 substrates for at least 28 days following rolapitant administration.

• romidepsin

  Monitor Closely (1)amoxapine and romidepsin both increase QTc interval. Modify Therapy/Monitor Closely.

• rosiglitazone

  Minor (1)amoxapine increases effects of rosiglitazone by pharmacodynamic synergism. Minor/Significance Unknown.

• safinamide

  Contraindicated (1)amoxapine, safinamide. Either increases toxicity of the other by serotonin levels. Contraindicated. Concomitant use could result in life-threatening serotonin syndrome.

• sage

  Minor (1)amoxapine and sage both increase sedation. Minor/Significance Unknown.

• salmeterol

  Monitor Closely (1)amoxapine increases and salmeterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, salmeterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• SAMe

  Monitor Closely (1)amoxapine and SAMe both increase serotonin levels. Modify Therapy/Monitor Closely.

• saxagliptin

  Minor (1)amoxapine increases effects of saxagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• scopolamine

  Monitor Closely (1)scopolamine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• scullcap

  Monitor Closely (1)amoxapine and scullcap both increase sedation. Use Caution/Monitor.

• secobarbital

  Monitor Closely (1)secobarbital and amoxapine both increase sedation. Use Caution/Monitor.Minor (1)secobarbital, amoxapine. Other (see comment). Minor/Significance Unknown. Comment: Barbiturates may increase adverse effects, including respiratory depression, produced by toxic doses of TCAs. With therapeutic doses of TCAs, barbiturates increase metabolism and decrease blood concentrations of TCAs.

• selegiline

  Contraindicated (1)selegiline and amoxapine both increase serotonin levels. Contraindicated. Concurrent use or use within 14 days of selegiline treatment is contraindicated

• selegiline transdermal

  Serious - Use Alternative (1)selegiline transdermal and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• selinexor

  Serious - Use Alternative (1)selinexor, amoxapine. unspecified interaction mechanism. Avoid or Use Alternate Drug. Patients treated with selinexor may experience neurological toxicities. Avoid taking selinexor with other medications that may cause dizziness or confusion.

• selpercatinib

  Monitor Closely (1)selpercatinib increases toxicity of amoxapine by QTc interval. Use Caution/Monitor.

• serdexmethylphenidate/dexmethylphenidate

  Serious - Use Alternative (1)amoxapine, serdexmethylphenidate/dexmethylphenidate. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.Minor (1)serdexmethylphenidate/dexmethylphenidate increases effects of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• sertraline

  Serious - Use Alternative (1)sertraline and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• sevoflurane

  Minor (1)sevoflurane, amoxapine. Mechanism: unspecified interaction mechanism. Minor/Significance Unknown. Risk of arrhythmias or hypotension.

• shepherd's purse

  Monitor Closely (1)amoxapine and shepherd's purse both increase sedation. Use Caution/Monitor.

• sitagliptin

  Minor (1)amoxapine increases effects of sitagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• sodium oxybate

  Serious - Use Alternative (1)amoxapine, sodium oxybate. Either increases effects of the other by pharmacodynamic synergism. Avoid or Use Alternate Drug. Profound sedation, respiratory depression, coma, and death may result if coadministered. Reserve concomitant prescribing of these drugs in patients for whom other treatment options are inadequate. Limit dosages and durations to the minimum required. Monitor closely for signs of respiratory depression and sedation.

• sodium sulfate/?magnesium sulfate/potassium chloride

  Monitor Closely (1)sodium sulfate/?magnesium sulfate/potassium chloride increases effects of amoxapine by unknown mechanism. Use Caution/Monitor. Closely monitor for evidence of seizures when using higher dose of magnesium sulfate together with drugs that lower the seizure threshold.

• sodium sulfate/potassium sulfate/magnesium sulfate

  Monitor Closely (1)sodium sulfate/potassium sulfate/magnesium sulfate increases effects of amoxapine by unknown mechanism. Use Caution/Monitor. Closely monitor for evidence of seizures when using higher dose of magnesium sulfate together with drugs that lower the seizure threshold.

• sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol

  Monitor Closely (1)amoxapine, sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol. Other (see comment). Use Caution/Monitor. Comment: Caution when bowel preps are used with drugs that cause SIADH or NSAIDs; increased risk for water retention or electrolyte imbalance.

• solifenacin

  Monitor Closely (1)solifenacin and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• sorafenib

  Monitor Closely (1)sorafenib and amoxapine both increase QTc interval. Use Caution/Monitor.

• sotalol

  Contraindicated (1)amoxapine and sotalol both increase QTc interval. Contraindicated.

• St John's Wort

  Serious - Use Alternative (1)amoxapine and St John's Wort both increase serotonin levels. Avoid or Use Alternate Drug.

• stiripentol

  Monitor Closely (1)stiripentol, amoxapine. Either increases effects of the other by sedation. Use Caution/Monitor. Concomitant use stiripentol with other CNS depressants, including alcohol, may increase the risk of sedation and somnolence.

• succinylcholine

  Monitor Closely (1)succinylcholine increases and amoxapine decreases cholinergic effects/transmission. Effect of interaction is not clear, use caution. Use Caution/Monitor.

• sufentanil

  Monitor Closely (1)sufentanil and amoxapine both increase sedation. Use Caution/Monitor.

• sufentanil SL

  Monitor Closely (1)sufentanil SL, amoxapine. Either increases effects of the other by serotonin levels. Use Caution/Monitor. Coadministration of drugs that affect the serotonergic neurotransmitter system may result in serotonin syndrome. If concomitant use is warranted, carefully observe the patient, particularly during treatment initiation and dose adjustment.

• sulfamethoxazole

  Monitor Closely (1)amoxapine and sulfamethoxazole both increase QTc interval. Modify Therapy/Monitor Closely.Minor (1)sulfamethoxazole decreases levels of amoxapine by unspecified interaction mechanism. Minor/Significance Unknown.

• sumatriptan

  Monitor Closely (1)sumatriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• sumatriptan intranasal

  Monitor Closely (1)sumatriptan intranasal and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• suvorexant

  Monitor Closely (1)suvorexant and amoxapine both increase sedation. Modify Therapy/Monitor Closely. Dosage adjustments of suvorexant and concomitant CNS depressants may be necessary

• tapentadol

  Monitor Closely (2)amoxapine and tapentadol both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  tapentadol and amoxapine both increase sedation. Use Caution/Monitor.

• tedizolid

  Serious - Use Alternative (1)tedizolid, amoxapine. Either increases effects of the other by Mechanism: pharmacodynamic synergism. Avoid or Use Alternate Drug. both increase serotonin levels; increased risk of serotonin syndrome.

• telavancin

  Monitor Closely (1)amoxapine and telavancin both increase QTc interval. Modify Therapy/Monitor Closely.

• temazepam

  Monitor Closely (1)temazepam and amoxapine both increase sedation. Use Caution/Monitor.

• terbinafine

  Monitor Closely (1)terbinafine will increase the level or effect of amoxapine by affecting hepatic enzyme CYP2D6 metabolism. Modify Therapy/Monitor Closely. Assess need to reduce dose of CYP2D6-metabolized drug.

• terbutaline

  Monitor Closely (1)amoxapine increases and terbutaline decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, terbutaline. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• tetrabenazine

  Monitor Closely (1)amoxapine and tetrabenazine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.

• thioridazine

  Monitor Closely (2)thioridazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  thioridazine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)thioridazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (2)amoxapine, thioridazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, thioridazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• thiothixene

  Monitor Closely (2)thiothixene and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Use Caution/Monitor.
  
  thiothixene and amoxapine both increase sedation. Use Caution/Monitor.

• tiotropium

  Monitor Closely (1)tiotropium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• tolazamide

  Minor (1)amoxapine increases effects of tolazamide by pharmacodynamic synergism. Minor/Significance Unknown.

• tolbutamide

  Minor (1)amoxapine increases effects of tolbutamide by pharmacodynamic synergism. Minor/Significance Unknown.

• tolterodine

  Monitor Closely (1)tolterodine and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• topiramate

  Monitor Closely (1)amoxapine and topiramate both increase sedation. Modify Therapy/Monitor Closely.

• tramadol

  Monitor Closely (2)amoxapine and tramadol both increase serotonin levels. Modify Therapy/Monitor Closely.
  
  tramadol and amoxapine both increase sedation. Use Caution/Monitor.

• tranylcypromine

  Contraindicated (1)tranylcypromine and amoxapine both increase serotonin levels. Contraindicated.

• trazodone

  Monitor Closely (2)amoxapine and trazodone both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and trazodone both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and trazodone both increase QTc interval. Avoid or Use Alternate Drug.
  
  trazodone and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• triazolam

  Monitor Closely (1)triazolam and amoxapine both increase sedation. Use Caution/Monitor.

• triclofos

  Monitor Closely (1)triclofos and amoxapine both increase sedation. Use Caution/Monitor.

• trifluoperazine

  Monitor Closely (2)trifluoperazine and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Modify Therapy/Monitor Closely.
  
  trifluoperazine and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)trifluoperazine and amoxapine both increase QTc interval. Avoid or Use Alternate Drug.Minor (2)amoxapine, trifluoperazine. Either increases levels of the other by decreasing metabolism. Minor/Significance Unknown. Additive anticholinergic effects.
  
  amoxapine, trifluoperazine. Either increases levels of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive anticholinergic effects.

• trihexyphenidyl

  Monitor Closely (1)trihexyphenidyl and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor. Potential for additive anticholinergic effects.

• trimethoprim

  Monitor Closely (1)amoxapine and trimethoprim both increase QTc interval. Modify Therapy/Monitor Closely.

• trimipramine

  Monitor Closely (2)amoxapine and trimipramine both decrease cholinergic effects/transmission. Use Caution/Monitor.
  
  amoxapine and trimipramine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (2)amoxapine and trimipramine both increase QTc interval. Avoid or Use Alternate Drug.
  
  amoxapine and trimipramine both increase serotonin levels. Avoid or Use Alternate Drug.

• triprolidine

  Monitor Closely (1)triprolidine and amoxapine both increase sedation. Use Caution/Monitor.

• tropisetron

  Monitor Closely (1)amoxapine and tropisetron both increase QTc interval. Modify Therapy/Monitor Closely.

• trospium chloride

  Monitor Closely (1)trospium chloride and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• umeclidinium bromide/vilanterol inhaled

  Serious - Use Alternative (2)amoxapine increases toxicity of umeclidinium bromide/vilanterol inhaled by QTc interval. Avoid or Use Alternate Drug. Exercise extreme caution when vilanterol coadministered with drugs that prolong QTc interval; adrenergic agonist effects on the cardiovascular system may be potentiated.
  
  amoxapine and umeclidinium bromide/vilanterol inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Exercise extreme caution if vilanterol coadministered with MAOIs or TCAs, or within 2 weeks of discontinuation of these drugs; adrenergic agonist effects on the cardiovascular system may be potentiated

• valerian

  Monitor Closely (1)valerian and amoxapine both increase sedation. Use Caution/Monitor.

• vandetanib

  Serious - Use Alternative (1)amoxapine, vandetanib. Either increases toxicity of the other by QTc interval. Avoid or Use Alternate Drug. Avoid coadministration with drugs known to prolong QT interval; if a drug known to prolong QT interval must be used, more frequent ECG monitoring is recommended.

• vasopressin

  Minor (1)amoxapine increases effects of vasopressin by pharmacodynamic synergism. Minor/Significance Unknown.

• vecuronium

  Monitor Closely (1)vecuronium and amoxapine both decrease cholinergic effects/transmission. Use Caution/Monitor.

• vemurafenib

  Serious - Use Alternative (1)vemurafenib and amoxapine both increase QTc interval. Avoid or Use Alternate Drug. Concomitant use of vemurafenib with drugs that prolong QT interval is not recommended.

• venlafaxine

  Monitor Closely (1)amoxapine and venlafaxine both increase QTc interval. Modify Therapy/Monitor Closely.Serious - Use Alternative (1)venlafaxine and amoxapine both increase serotonin levels. Avoid or Use Alternate Drug.

• verapamil

  Minor (1)verapamil increases levels of amoxapine by decreasing metabolism. Minor/Significance Unknown.

• vilanterol/fluticasone furoate inhaled

  Serious - Use Alternative (2)amoxapine and vilanterol/fluticasone furoate inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Avoid or Use Alternate Drug. Exercise extreme caution if vilanterol coadministered with MAOIs or TCAs, or within 2 weeks of discontinuation of these drugs; adrenergic agonist effects on the cardiovascular system may be potentiated
  
  amoxapine increases toxicity of vilanterol/fluticasone furoate inhaled by QTc interval. Avoid or Use Alternate Drug. Exercise extreme caution when vilanterol coadministered with drugs that prolong QTc interval; adrenergic agonist effects on the cardiovascular system may be potentiated.

• vildagliptin

  Minor (1)amoxapine increases effects of vildagliptin by pharmacodynamic synergism. Minor/Significance Unknown.

• voclosporin

  Monitor Closely (1)voclosporin, amoxapine. Either increases effects of the other by QTc interval. Use Caution/Monitor.

• voriconazole

  Monitor Closely (1)amoxapine and voriconazole both increase QTc interval. Modify Therapy/Monitor Closely.

• vortioxetine

  Serious - Use Alternative (1)amoxapine, vortioxetine. Either increases effects of the other by serotonin levels. Avoid or Use Alternate Drug.

• xylometazoline

  Monitor Closely (1)amoxapine increases and xylometazoline decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, xylometazoline. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• yohimbe

  Serious - Use Alternative (1)yohimbe, amoxapine. Mechanism: unspecified interaction mechanism. Contraindicated. May cause increase or decrease in blood pressure.

• yohimbine

  Monitor Closely (1)amoxapine increases and yohimbine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, yohimbine. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.

• ziconotide

  Monitor Closely (1)amoxapine and ziconotide both increase sedation. Use Caution/Monitor.

• ziprasidone

  Contraindicated (1)ziprasidone and amoxapine both increase antidopaminergic effects, including extrapyramidal symptoms and neuroleptic malignant syndrome. Contraindicated.Monitor Closely (1)ziprasidone and amoxapine both increase sedation. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine and ziprasidone both increase QTc interval. Avoid or Use Alternate Drug.

• zolmitriptan

  Monitor Closely (1)zolmitriptan and amoxapine both increase serotonin levels. Modify Therapy/Monitor Closely.

• zolpidem

  Minor (1)zolpidem, amoxapine. Either increases effects of the other by pharmacodynamic synergism. Minor/Significance Unknown. Additive CNS depression.