citalopram (Rx)

Brand and Other Names:Celexa

Dosing & Uses

AdultPediatricGeriatric

Dosage Forms & Strengths

tablet

  • 10mg
  • 20mg
  • 40mg

oral solution

  • 10mg/5mL

Depression

Depression in patients whose diagnosis corresponds most closely to the DSM-III and DSM-III-R category of major depressive disorder

Initial dose: 20 mg PO qDay

If needed, may increase to 40 mg/day after at least 1 week

Doses above 40 mg/day are not recommended, because of risk for QT prolongation without additional benefit for treating depression

Dosing Modifications

Poor CYP2C19 metabolizers or coadministration with CYP2C19 inhibitors (eg, cimetidine, fluconazole, omeprazole): Do not exceed 20 mg/day

Hepatic impairment decreases clearance and therefore increases risk of QT prolongation; do not exceed 20 mg/day

MAO inhibitors

  • Not for administration within 14 days of administering a MAO inhibitor

Linezolid or Methylene Blue Therapy

  • Not for administration to patients that are receiving linezolid or IV methylene blue; consider other forms of therapy; if therapy required and benefits outweigh risks discontinue citalopram therapy, administer linezolid or methylene blue and monitor for serotonin syndrome for 2 weeks or 24 hr after last dose of linezolid or methylene blue

Renal impairment

  • Mild to moderate renal impairment: No dosage adjustment required
  • Severe renal impairment (CrCl <20 mL/min): Not studied; use with caution

Alcoholism (Off-label)

20-40 mg PO qDay

Binge-eating Disorder (Off-label)

20-60 PO qDay

Generalized Anxiety Disorder (Off-label)

Initial: 10 mg PO qDay; may titrate to 40 mg/day

Panic Disorder (Off-label)

20 mg PO qDay initially; after 1 week, may increase to 40 mg/day if warranted

Not to exceed 40 mg/day because of increased risk for QT prolongation

Hot Flashes (Off-label)

Initial: 10 mg PO qDay; may increase to 20 mg/day after 1 week

Obsessive-Compulsive Disorder (Off-label)

Initial: 20 mg PO qDay; may titrate to 40-60 mg/day; improvement may be seen 4-6 weeks after initiating therapy

Premenstrual Dysphoric Disorder (Off-label)

5 mg PO on the estimated day of ovulation; increase dose by 5 mg each day thereafter to maximum 30 mg; continue thereafter until menstruation begins; decrease dose to 20 mg on the first day of menstruation; the next day, decrease to 10 mg; stop the treatment from day 3 until ovulation begins

Dosage Forms & Strengths

tablet

  • 10mg
  • 20mg
  • 40mg

oral solution

  • 10mg/5mL

Depression (Off-label)

<12 years

  • 10 mg PO qDay; may increase by 5 mg/day every 2 weeks to 40 mg PO qDay; doses >40 mg not recommended (may increase risk of QT prolongation)

≥12 years

  • 20 mg PO qDay; may increase by 10 mg/day every 2 weeks to 40 mg PO qDay; doses >40 mg not recommended (may increase risk of QT prolongation)

Impulsive Aggresive Behavior (Off-label)

10 mg PO qDay; titrate by 10 mg/week, as tolerated to maximum 40 mg/day

Depression

>60 years: Do not exceed 20 mg PO qDay

Dosing Considerations

-The elderly are more prone to SSRI/SNRI-induced hyponatremia and risk for QT prolongation

Next:

Interactions

Interaction Checker

and citalopram

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            Contraindicated (12)

            • dronedarone

              dronedarone and citalopram both increase QTc interval. Contraindicated. Concurrent use of dronedarone with other agents that can prolong QT interval is contraindicated.

            • fluconazole

              citalopram and fluconazole both increase QTc interval. Contraindicated.

            • goserelin

              goserelin increases toxicity of citalopram by QTc interval. Contraindicated. Increases risk of torsades de pointes.

            • isocarboxazid

              isocarboxazid and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • leuprolide

              leuprolide increases toxicity of citalopram by QTc interval. Contraindicated. Increases risk of torsades de pointes.

            • phenelzine

              phenelzine and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • pimozide

              citalopram and pimozide both increase QTc interval. Contraindicated.

            • procarbazine

              procarbazine and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • selegiline

              selegiline and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • selegiline transdermal

              selegiline transdermal and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • tranylcypromine

              tranylcypromine and citalopram both increase serotonin levels. Contraindicated. At least 2 weeks should elapse between discontinuation of MAOI therapy and the start of citalopram therapy, and at least 2 weeks between discontinuation of citalopram therapy and commencement of MAOI therapy.

            • ziprasidone

              ziprasidone and citalopram both increase QTc interval. Contraindicated.

            Serious - Use Alternative (144)

            • adagrasib

              adagrasib, citalopram. Either increases effects of the other by QTc interval. Avoid or Use Alternate Drug. Each drug prolongs the QTc interval, which may increased the risk of Torsade de pointes, other serious arryhthmias, and sudden death. If coadministration unavoidable, more frequent monitoring is recommended for such patients.

            • alfentanil

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

            • alfuzosin

              alfuzosin and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • almotriptan

              citalopram, almotriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • amisulpride

              citalopram and amisulpride both increase QTc interval. Avoid or Use Alternate Drug. ECG monitoring is recommended if coadministered.

            • amitriptyline

              citalopram and amitriptyline 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.

              citalopram and amitriptyline both increase QTc interval. Avoid or Use Alternate Drug.

            • amoxapine

              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.

            • anagrelide

              citalopram and anagrelide both increase QTc interval. Avoid or Use Alternate Drug.

            • apalutamide

              apalutamide will decrease the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Avoid or Use Alternate Drug. Coadministration of apalutamide, a strong CYP2C19 inducer, with drugs that are CYP2C19 substrates can result in lower exposure to these medications. Avoid or substitute another drug for these medications when possible. Evaluate for loss of therapeutic effect if medication must be coadministered.

              apalutamide will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Coadministration of apalutamide, a strong CYP3A4 inducer, with drugs that are CYP3A4 substrates can result in lower exposure to these medications. Avoid or substitute another drug for these medications when possible. Evaluate for loss of therapeutic effect if medication must be coadministered. Adjust dose according to prescribing information if needed.

            • aripiprazole

              aripiprazole and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • artemether

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

            • buprenorphine

              citalopram and buprenorphine both increase QTc interval. Avoid or Use Alternate Drug.

            • buprenorphine buccal

              buprenorphine buccal and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • buprenorphine subdermal implant

              buprenorphine subdermal implant and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • buprenorphine transdermal

              buprenorphine transdermal and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • buprenorphine, long-acting injection

              buprenorphine, long-acting injection and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • buspirone

              citalopram and buspirone both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • ceritinib

              ceritinib and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

              ceritinib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug.

            • cisapride

              citalopram and cisapride both increase QTc interval. Avoid or Use Alternate Drug.

            • clarithromycin

              clarithromycin, citalopram. Either increases toxicity of the other by QTc interval. Avoid or Use Alternate Drug. To monitor for the prolongation of QT/QTc and/or development of ventricular tachyarrhythmias the labeling recommends monitoring QT interval or ECG.

            • clomipramine

              citalopram and clomipramine 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.

              citalopram and clomipramine both increase QTc interval. Avoid or Use Alternate Drug.

            • clozapine

              citalopram and clozapine both increase QTc interval. Avoid or Use Alternate Drug.

            • cocaine topical

              citalopram and cocaine topical both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • crizotinib

              citalopram and crizotinib both increase QTc interval. Avoid or Use Alternate Drug.

            • cyclobenzaprine

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

            • dacomitinib

              dacomitinib will increase the level or effect of citalopram 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.

            • desflurane

              desflurane and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • desipramine

              citalopram and desipramine 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.

              desipramine and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • desvenlafaxine

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

            • dextromethorphan

              citalopram and dextromethorphan both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • dolasetron

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

            • donepezil

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

            • doxepin

              citalopram and doxepin 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.

              doxepin and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • duloxetine

              citalopram and duloxetine both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • efavirenz

              efavirenz will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug.

              efavirenz and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • eletriptan

              citalopram, eletriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • eliglustat

              citalopram and eliglustat both increase QTc interval. Avoid or Use Alternate Drug.

            • encorafenib

              encorafenib and citalopram both increase QTc interval. Avoid or Use Alternate Drug. Encorafenib is associated with dose-dependent QTc interval prolongation. Avoid with drugs known to prolong QT interval.

            • entrectinib

              citalopram and entrectinib both increase QTc interval. Avoid or Use Alternate Drug.

            • eribulin

              citalopram and eribulin both increase QTc interval. Avoid or Use Alternate Drug.

            • erythromycin base

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

            • erythromycin ethylsuccinate

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

            • erythromycin lactobionate

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

            • erythromycin stearate

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

            • escitalopram

              citalopram and escitalopram both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • fentanyl

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

            • fentanyl intranasal

              fentanyl intranasal, citalopram. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

            • fentanyl transdermal

              fentanyl transdermal, citalopram. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

            • fentanyl transmucosal

              fentanyl transmucosal, citalopram. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug.

            • fexinidazole

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

              fexinidazole will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Fexinidazole inhibits CYP3A4. Coadministration may increase risk for adverse effects of CYP3A4 substrates.

            • fingolimod

              fingolimod and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

            • fluoxetine

              citalopram and fluoxetine both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • fluvoxamine

              fluvoxamine and citalopram both increase serotonin levels. Avoid or Use Alternate Drug. Combinatiomay increase risk of serotonin syndrome or neuroleptic malignant syndromn e like reactions.

            • frovatriptan

              citalopram, frovatriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • gilteritinib

              gilteritinib will decrease the level or effect of citalopram by Other (see comment). Avoid or Use Alternate Drug. Coadministration of gilteritinib with drugs that inhibit 5HT2B or sigma nonspecific receptors. Avoid use of these drugs with gilteritinib unless coadministration is necessary.

              citalopram and gilteritinib both increase QTc interval. Avoid or Use Alternate Drug.

            • givosiran

              givosiran will increase the level or effect of citalopram 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.

            • glasdegib

              citalopram and glasdegib both increase QTc interval. Avoid or Use Alternate Drug. If coadministration unavoidable, monitor for increased risk of QTc interval prolongation.

            • granisetron

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

              citalopram and granisetron both increase QTc interval. Avoid or Use Alternate Drug.

            • haloperidol

              citalopram will increase the level or effect of haloperidol by affecting hepatic enzyme CYP2D6 metabolism. Avoid or Use Alternate Drug. Increased risk of serotonin syndrome or neuroleptic malignant syndrome. Potential risk for QT prolongation. ECG monitoring is recommended.

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

            • histrelin

              histrelin increases toxicity of citalopram by QTc interval. Avoid or Use Alternate Drug. Increases risk of torsades de pointes.

            • hydromorphone

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

            • hydroxychloroquine sulfate

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

            • hydroxyzine

              hydroxyzine increases toxicity of citalopram by QTc interval. Avoid or Use Alternate Drug. Increases risk of torsades de pointes.

            • idelalisib

              idelalisib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Idelalisib is a strong CYP3A inhibitor; avoid coadministration with sensitive CYP3A substrates

            • imipramine

              citalopram and imipramine 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.

            • inotuzumab

              inotuzumab and citalopram both increase QTc interval. Avoid or Use Alternate Drug. If unable to avoid concomitant use, obtain ECGs and electrolytes before and after initiation of any drug known to prolong QTc, and periodically monitor as clinically indicated during treatment.

            • isoflurane

              citalopram and isoflurane both increase QTc interval. Avoid or Use Alternate Drug.

            • itraconazole

              citalopram and itraconazole both increase QTc interval. Avoid or Use Alternate Drug.

            • ivosidenib

              ivosidenib and citalopram 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.

              ivosidenib will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Avoid coadministration of sensitive CYP3A4 substrates with ivosidenib or replace with alternate therapies. If coadministration is unavoidable, monitor patients for loss of therapeutic effect of these drugs.

            • L-tryptophan

              citalopram and L-tryptophan both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • lefamulin

              citalopram and lefamulin both increase QTc interval. Avoid or Use Alternate Drug.

            • levomilnacipran

              citalopram and levomilnacipran both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • linezolid

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

            • lithium

              citalopram and lithium both increase QTc interval. Avoid or Use Alternate Drug.

            • lonafarnib

              lonafarnib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Avoid coadministration with sensitive CYP3A substrates. If coadministration unavoidable, monitor for adverse reactions and reduce CYP3A substrate dose in accordance with product labeling.

              lonafarnib will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Avoid or Use Alternate Drug. Lonafarnib may increase the AUC and peak concentration of CYP2C19 substrates. If coadministration unavoidable, monitor for adverse reactions and reduce the CYP2C19 substrate dose in accordance with its approved product labeling.

            • loperamide

              citalopram and loperamide both increase QTc interval. Avoid or Use Alternate Drug.

            • lopinavir

              citalopram and lopinavir both increase QTc interval. Avoid or Use Alternate Drug.

            • lorcaserin

              citalopram and lorcaserin both increase serotonin levels. Avoid or Use Alternate Drug.

            • macimorelin

              macimorelin and citalopram 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

              citalopram and maprotiline both increase QTc interval. Avoid or Use Alternate Drug.

            • mefloquine

              mefloquine and citalopram both increase QTc interval. Avoid or Use Alternate Drug. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • meperidine

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

            • methylene blue

              methylene blue and citalopram 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.

            • metoclopramide

              metoclopramide and citalopram both increase serotonin levels. Avoid or Use Alternate Drug. Additive effects; increased risk for serotonin syndrome, neuroleptic malignant syndrome, dystonia, or other extrapyramidal reactions

            • metoclopramide intranasal

              citalopram, 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.

            • midostaurin

              citalopram and midostaurin both increase QTc interval. Avoid or Use Alternate Drug.

            • milnacipran

              citalopram and milnacipran both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • mirtazapine

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

            • mobocertinib

              mobocertinib and citalopram both increase QTc interval. Avoid or Use Alternate Drug. If coadministration unavoidable, reduce mobocertinib dose and monitor QTc interval more frequently.

            • morphine

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

            • naratriptan

              citalopram, naratriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • nefazodone

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

            • netupitant/palonosetron

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

            • nortriptyline

              citalopram and nortriptyline 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.

              citalopram and nortriptyline both increase QTc interval. Avoid or Use Alternate Drug.

            • olanzapine

              citalopram and olanzapine both increase QTc interval. Avoid or Use Alternate Drug. Limited data, including some case reports, suggest that olanzapine may be associated with a significant prolongation of the QTc interval in rare instances

            • olopatadine intranasal

              citalopram and olopatadine intranasal both increase sedation. Avoid or Use Alternate Drug. Coadministration increases risk of CNS depression, which can lead to additive impairment of psychomotor performance and cause daytime impairment.

            • ondansetron

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

            • oxaliplatin

              citalopram and oxaliplatin both increase QTc interval. Avoid or Use Alternate Drug.

            • ozanimod

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

            • panobinostat

              citalopram and panobinostat both increase QTc interval. Avoid or Use Alternate Drug. Panobinostat is known to significantly prolong QT interval. Panobinostat prescribing information states use with drugs known to prolong QTc is not recommended.

            • paroxetine

              citalopram and paroxetine both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • phentermine

              citalopram, phentermine. Either increases toxicity of the other by Mechanism: unknown. Avoid or Use Alternate Drug. Risk of serotonin syndrome.

            • pimavanserin

              citalopram and pimavanserin both increase QTc interval. Avoid or Use Alternate Drug. Coadministration may increase the risk of QT prolongation and cardiac arrhythmia.

            • pitolisant

              citalopram and pitolisant both increase QTc interval. Avoid or Use Alternate Drug.

            • ponesimod

              citalopram and ponesimod both increase QTc interval. Avoid or Use Alternate Drug.

            • posaconazole

              citalopram and posaconazole both increase QTc interval. Contraindicated.

            • primaquine

              citalopram and primaquine both increase QTc interval. Avoid or Use Alternate Drug.

            • primidone

              primidone will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug.

            • protriptyline

              citalopram and protriptyline 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.

              citalopram and protriptyline both increase QTc interval. Avoid or Use Alternate Drug.

            • rasagiline

              rasagiline and citalopram both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • remifentanil

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

            • ribociclib

              ribociclib and citalopram both increase QTc interval. Avoid or Use Alternate Drug.

              ribociclib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug.

            • risperidone

              citalopram and risperidone both increase QTc interval. Avoid or Use Alternate Drug.

            • rizatriptan

              citalopram, rizatriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • saquinavir

              saquinavir will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug.

            • selinexor

              selinexor, citalopram. 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.

            • sertraline

              citalopram and sertraline both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

              citalopram and sertraline both increase QTc interval. Avoid or Use Alternate Drug.

            • sevoflurane

              citalopram and sevoflurane both increase QTc interval. Avoid or Use Alternate Drug.

            • siponimod

              citalopram and siponimod both increase QTc interval. Avoid or Use Alternate Drug.

            • solifenacin

              citalopram and solifenacin both increase QTc interval. Avoid or Use Alternate Drug.

            • St John's Wort

              citalopram and St John's Wort both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • sufentanil

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

            • sumatriptan

              citalopram, sumatriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • sumatriptan intranasal

              citalopram, sumatriptan intranasal. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            • tedizolid

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

            • tetrabenazine

              citalopram and tetrabenazine both increase QTc interval. Avoid or Use Alternate Drug.

            • thioridazine

              thioridazine and citalopram both increase QTc interval. Avoid or Use Alternate Drug. Thioridazine should be avoided in combination with drugs that are known to prolong QTc interval.

            • trazodone

              citalopram and trazodone both increase QTc interval. Avoid or Use Alternate Drug.

            • trimipramine

              citalopram and trimipramine 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.

              citalopram and trimipramine both increase QTc interval. Avoid or Use Alternate Drug.

            • triptorelin

              triptorelin increases toxicity of citalopram by QTc interval. Avoid or Use Alternate Drug. Increases risk of torsades de pointes.

            • tucatinib

              tucatinib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Avoid concomitant use of tucatinib with CYP3A substrates, where minimal concentration changes may lead to serious or life-threatening toxicities. If unavoidable, reduce CYP3A substrate dose according to product labeling.

            • umeclidinium bromide/vilanterol inhaled

              citalopram 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.

            • vandetanib

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

            • venlafaxine

              citalopram and venlafaxine both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • vilanterol/fluticasone furoate inhaled

              citalopram 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.

            • vilazodone

              citalopram, vilazodone. Either increases toxicity of the other by serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • voriconazole

              citalopram and voriconazole both increase QTc interval. Avoid or Use Alternate Drug.

            • vorinostat

              citalopram and vorinostat both increase QTc interval. Avoid or Use Alternate Drug.

            • vortioxetine

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

            • voxelotor

              voxelotor will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Voxelotor increases systemic exposure of sensitive CYP3A4 substrates. Avoid coadministration with sensitive CYP3A4 substrates with a narrow therapeutic index. Consider dose reduction of the sensitive CYP3A4 substrate(s) if unable to avoid.

            • ziprasidone

              citalopram and ziprasidone both increase QTc interval. Contraindicated.

            • zolmitriptan

              citalopram, zolmitriptan. Mechanism: unknown. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome. If concomitant treatment with citalopram and a triptan is clinically warranted, careful observation of the patient is advised, particularly during treatment initiation and dose increases.

            Monitor Closely (289)

            • 5-HTP

              citalopram and 5-HTP both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • abciximab

              citalopram increases effects of abciximab by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • abiraterone

              abiraterone increases levels of citalopram 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.

            • activated charcoal

              activated charcoal decreases effects of citalopram by pharmacodynamic antagonism. Use Caution/Monitor. Charcoal can reduce absorption of citalopram, resulting in decreased efficacy.

            • albuterol

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

            • alfuzosin

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

            • amifampridine

              citalopram 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

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

            • amobarbital

              amobarbital will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • amoxapine

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

            • anagrelide

              citalopram increases effects of anagrelide by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • antithrombin III

              citalopram increases effects of antithrombin III by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • apixaban

              citalopram increases effects of apixaban by anticoagulation. Use Caution/Monitor. SSRIs may inhibit platelet aggregation, thus increase bleeding risk when coadministered with anticoagulants.

            • apomorphine

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

            • arformoterol

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

            • argatroban

              citalopram increases effects of argatroban by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • arsenic trioxide

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

            • artemether/lumefantrine

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

            • asenapine

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

            • asenapine transdermal

              asenapine transdermal and citalopram both increase QTc interval. Use Caution/Monitor.

            • aspirin

              citalopram, aspirin. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • aspirin rectal

              citalopram, aspirin rectal. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • aspirin/citric acid/sodium bicarbonate

              citalopram, aspirin/citric acid/sodium bicarbonate. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • atazanavir

              atazanavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • atomoxetine

              citalopram increases levels of atomoxetine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. Although citalopram is a weak inhibitor of 2D6, the potential for an interaction exists.

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

            • azithromycin

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

            • bedaquiline

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

            • belzutifan

              belzutifan will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. If unable to avoid coadministration of belzutifan with sensitive CYP3A4 substrates, consider increasing the sensitive CYP3A4 substrate dose in accordance with its prescribing information.

            • benzhydrocodone/acetaminophen

              benzhydrocodone/acetaminophen, citalopram. 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.

            • betrixaban

              citalopram, betrixaban. Either increases levels of the other by anticoagulation. Use Caution/Monitor. SSRIs may inhibit platelet aggregation, thus increase bleeding risk when coadministered with anticoagulants.

            • bivalirudin

              citalopram increases effects of bivalirudin by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • bosentan

              bosentan will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • bumetanide

              bumetanide, citalopram. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • buprenorphine subdermal implant

              citalopram, 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

              citalopram, 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

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

            • cannabidiol

              cannabidiol will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Modify Therapy/Monitor Closely. Consider reducing the dose of sensitive CYP2C19 substrates, as clinically appropriate, when coadministered with cannabidiol.

            • carbamazepine

              carbamazepine decreases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. The possibility that carbamazepine might increase the clearance of citalopram should be considered when both drugs are coadministered.

            • carvedilol

              citalopram increases levels of carvedilol by decreasing metabolism. Use Caution/Monitor.

            • celecoxib

              citalopram, celecoxib. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • cenobamate

              cenobamate will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. Increase dose of CYP3A4 substrate, as needed, when coadministered with cenobamate.

              cenobamate will decrease the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Modify Therapy/Monitor Closely. Consider a dose reduction of CYP2C19 substrates, as clinically appropriate, when used concomitantly with cenobamate.

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

            • chloramphenicol

              chloramphenicol will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely.

            • chloroquine

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

            • chlorothiazide

              chlorothiazide, citalopram. pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • chlorpromazine

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

            • choline magnesium trisalicylate

              citalopram, choline magnesium trisalicylate. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Risk of GI adverse effects may be increased. If possible, avoid concurrent use.

            • cilostazol

              citalopram increases effects of cilostazol by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • cimetidine

              cimetidine increases levels of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • ciprofloxacin

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

            • clofazimine

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

            • clonidine

              clonidine, citalopram. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration enhances CNS depressant effects.

            • clopidogrel

              citalopram increases effects of clopidogrel by pharmacodynamic synergism. Use Caution/Monitor. SSRIs affect platelet activation; coadministration of SSRIs with clopidogrel may increase the risk of bleeding.

            • clozapine

              citalopram increases effects of clozapine by pharmacodynamic synergism. Use Caution/Monitor. Increased risk for serotonin syndrome.

            • cobicistat

              cobicistat will increase the level or effect of citalopram 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 SSRIs and cobicistat.

              cobicistat will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • conivaptan

              conivaptan increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • crizotinib

              crizotinib increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Dose reduction may be needed for coadministered drugs that are predominantly metabolized by CYP3A. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • crofelemer

              crofelemer increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Crofelemer has the potential to inhibit CYP3A4 at concentrations expected in the gut; unlikely to inhibit systemically because minimally absorbed.

            • cyclobenzaprine

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

            • cyproheptadine

              cyproheptadine decreases effects of citalopram by pharmacodynamic antagonism. Use Caution/Monitor. Cyproheptadine may diminish the serotonergic effect of SSRIs.

            • dabigatran

              citalopram increases effects of dabigatran by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • dabrafenib

              dabrafenib will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely.

            • dalteparin

              citalopram increases effects of dalteparin by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • daridorexant

              citalopram 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.

            • darunavir

              darunavir will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Coadministration with SSRIs, TCAs, or trazodone may require dose titration of antidepressant to desired effect (eg, using the lowest feasible initial or maintenance dose). Monitor for antidepressant response.

            • dasatinib

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

            • defibrotide

              defibrotide increases effects of citalopram by Other (see comment). Use Caution/Monitor. Comment: Defibrotide may enhance effects of platelet inhibitors.

            • degarelix

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

            • deutetrabenazine

              citalopram and deutetrabenazine both increase QTc interval. Use Caution/Monitor. At the maximum recommended dose, deutetrabenazine does not prolong QT interval to a clinically relevant extent. Certain circumstances may increase risk of torsade de pointes and/or sudden death in association with drugs that prolong the QTc interval (eg, bradycardia, hypokalemia or hypomagnesemia, coadministration with other drugs that prolong QTc interval, presence of congenital QT prolongation).

            • dexmethylphenidate

              dexmethylphenidate increases effects of citalopram by decreasing metabolism. Use Caution/Monitor. Potential risk for serotonin syndrome or neuroleptic malignant syndrome-like reactions, caution should be observed during coadministration.

            • dextroamphetamine

              citalopram and dextroamphetamine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • dextroamphetamine transdermal

              citalopram, dextroamphetamine transdermal. Either increases effects of the other by serotonin levels. Modify Therapy/Monitor Closely. Initiate with lower doses and monitor for signs and symptoms of serotonin syndrome, particularly during initiation or dosage increase. If serotonin syndrome occurs, discontinue dextroamphetamine transdermal and concomitant serotonergic drug(s).

            • diazepam intranasal

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

            • dichlorphenamide

              dichlorphenamide and citalopram both decrease serum potassium. Use Caution/Monitor.

            • diclofenac

              citalopram, diclofenac. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • difelikefalin

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

            • diflunisal

              citalopram, diflunisal. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. SSRIs inhib. serotonin uptake by platelets. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • dihydroergotamine

              citalopram and dihydroergotamine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • dihydroergotamine intranasal

              citalopram and dihydroergotamine intranasal both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • dipyridamole

              citalopram increases effects of dipyridamole by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • disopyramide

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

            • dofetilide

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

            • dolasetron

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

            • droperidol

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

            • duvelisib

              duvelisib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. will increase the level or effect of

            • elagolix

              elagolix will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Modify Therapy/Monitor Closely. Elagolix is a weak CYP2C19 inhibitor. Caution with sensitive CYP2C19 substrates.

              elagolix will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. Elagolix is a weak-to-moderate CYP3A4 inducer. Monitor CYP3A substrates if coadministered. Consider increasing CYP3A substrate dose if needed.

            • eliglustat

              eliglustat increases levels of citalopram 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 citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. CYP3A4 substrates for which elevated plasma concentrations are associated with serious and/or life-threatening events.

              elvitegravir/cobicistat/emtricitabine/tenofovir DF increases levels of citalopram 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.

            • encorafenib

              encorafenib, citalopram. affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Encorafenib both inhibits and induces CYP3A4 at clinically relevant plasma concentrations. Coadministration of encorafenib with sensitive CYP3A4 substrates may result in increased toxicity or decreased efficacy of these agents.

            • enoxaparin

              citalopram increases effects of enoxaparin by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • enzalutamide

              enzalutamide will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • eptifibatide

              citalopram increases effects of eptifibatide by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • ergotamine

              citalopram and ergotamine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • erythromycin base

              erythromycin base increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • erythromycin ethylsuccinate

              erythromycin ethylsuccinate increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • erythromycin lactobionate

              erythromycin lactobionate increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • erythromycin stearate

              erythromycin stearate increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • eslicarbazepine acetate

              eslicarbazepine acetate will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor.

            • esomeprazole

              esomeprazole will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • ethacrynic acid

              ethacrynic acid, citalopram. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • ethanol

              ethanol, citalopram. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Additive CNS depression.

            • etodolac

              citalopram, etodolac. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • etravirine

              etravirine will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • ezogabine

              ezogabine, citalopram. 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 citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Adjust dose of drugs that are CYP2C19 substrates as necessary.

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

            • fenfluramine

              fenfluramine, citalopram. 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.

            • fenoprofen

              citalopram, fenoprofen. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • fexinidazole

              fexinidazole will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor.

            • fish oil triglycerides

              fish oil triglycerides will increase the level or effect of citalopram by anticoagulation. Use Caution/Monitor. Prolonged bleeding reported in patients taking antiplatelet agents or anticoagulants and oral omega-3 fatty acids. Periodically monitor bleeding time in patients receiving fish oil triglycerides and concomitant antiplatelet agents or anticoagulants.

            • flecainide

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

            • fluconazole

              fluconazole will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • fluoxetine

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

            • fluphenazine

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

            • flurbiprofen

              citalopram, flurbiprofen. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • fluvoxamine

              fluvoxamine will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation

            • fondaparinux

              citalopram increases effects of fondaparinux by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • fosamprenavir

              fosamprenavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Potential for increased toxicity. .

            • foscarnet

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

            • fosphenytoin

              fosphenytoin will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • furosemide

              furosemide, citalopram. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • gabapentin

              gabapentin, citalopram. 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, citalopram. 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.

            • gadobenate

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

            • ganaxolone

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

            • gemifloxacin

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

            • gemtuzumab

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

            • gepirone

              gepirone and citalopram both increase QTc interval. Modify Therapy/Monitor Closely.

              gepirone and citalopram both increase serotonin levels. Use Caution/Monitor. Monitor for symptoms of serotonin syndrome when gepirone is used gepirone with other drugs that may affect the serotonergic neurotransmitter systems. If serotonin syndrome occurs, consider discontinue gepirone and/or concomitant serotonergic drug.

            • green tea

              green tea, citalopram. Other (see comment). Use Caution/Monitor. Comment: Combination may increase risk of bleeding.

            • heparin

              citalopram increases effects of heparin by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • hydrochlorothiazide

              hydrochlorothiazide, citalopram. pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • hydrocodone

              hydrocodone, citalopram. 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.

            • ibrutinib

              ibrutinib will increase the level or effect of citalopram by anticoagulation. Use Caution/Monitor. Ibrutinib may increase the risk of hemorrhage in patients receiving antiplatelet or anticoagulant therapies and monitor for signs of bleeding.

            • ibuprofen

              citalopram, ibuprofen. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • ibuprofen IV

              citalopram, ibuprofen IV. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • ibutilide

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

            • icosapent

              icosapent, citalopram. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Icosapent may prolong bleeding time. Periodically monitor if coadministered with other drugs that affect bleeding.

            • iloperidone

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

              iloperidone increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Iloperidone is a time-dependent CYP3A inhibitor and may lead to increased plasma levels of drugs predominantly eliminated by CYP3A4.

            • imatinib

              imatinib increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • indacaterol, inhaled

              indacaterol, inhaled, citalopram. QTc interval. Use Caution/Monitor. Drugs that are known to prolong the QTc interval may have an increased the risk of ventricular arrhythmias.

            • indapamide

              indapamide, citalopram. pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

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

            • indinavir

              indinavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Potential for increased toxicity. .

            • indomethacin

              citalopram, indomethacin. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • ioflupane I 123

              citalopram 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 I 123 administration.

            • isoniazid

              isoniazid will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • isradipine

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

            • istradefylline

              istradefylline will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Istradefylline 40 mg/day increased peak levels and AUC of CYP3A4 substrates in clinical trials. This effect was not observed with istradefylline 20 mg/day. Consider dose reduction of sensitive CYP3A4 substrates.

            • itraconazole

              itraconazole increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • ketoprofen

              citalopram, ketoprofen. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • ketorolac

              citalopram, ketorolac. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • ketorolac intranasal

              citalopram, ketorolac intranasal. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • lamotrigine

              lamotrigine increases toxicity of citalopram by unspecified interaction mechanism. Modify Therapy/Monitor Closely. CNS depressants may increase the toxic effects of selective serotonin reuptake inhibitors; psychomotor impairment may be enhanced.

            • lapatinib

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

            • lasmiditan

              lasmiditan, citalopram. 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.

              citalopram increases effects of lasmiditan by serotonin levels. Use Caution/Monitor. Coadministration may increase risk of serotonin syndrome.

            • lemborexant

              lemborexant, citalopram. 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.

            • lenacapavir

              lenacapavir will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Lencapavir (a moderate CYP3A4 inhibitor) may increase CYP3A4 substrates initiated within 9 months after last SC dose of lenacapavir, which may increase potential risk of adverse reactions of CYP3A4 substrates.

            • lenvatinib

              citalopram and lenvatinib both increase QTc interval. Use Caution/Monitor. Lenvatinib prescribing information recommends monitoring ECG closely when coadministered with QT prolonging drugs.

            • letermovir

              letermovir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • levalbuterol

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

            • levofloxacin

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

            • lisdexamfetamine

              citalopram, lisdexamfetamine. Either increases effects of the other by unknown mechanism. Use Caution/Monitor. Risk of serotonin syndrome.

              citalopram, 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

              citalopram, lithium. Mechanism: unknown. Use Caution/Monitor. Lithium may enhance the serotonergic effects of citalopram, caution should be exercised when citalopram and lithium are coadministered.

            • lofexidine

              citalopram and lofexidine both increase QTc interval. Use Caution/Monitor. ECG monitoring is recommended.

            • lopinavir

              lopinavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Potential for increased toxicity. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • lorcaserin

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

            • lorlatinib

              lorlatinib will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • lumacaftor/ivacaftor

              lumacaftor/ivacaftor, citalopram. affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. In vitro studies suggest that lumacaftor may induce and ivacaftor may inhibit CYP2C19 substrates. .

              lumacaftor/ivacaftor will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. A higher dose of citalopram may be required to obtain desired therapeutic effect. Citalopram is a CYP3A and CYP2C19 substrate. Lumacaftor/ivacaftor is a strong inducer of CYP3A and has the potential to induce CYP2C19.

            • lumefantrine

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

            • lurasidone

              lurasidone, citalopram. Either increases toxicity of the other by Other (see comment). Use Caution/Monitor. Comment: Potential for increased CNS depressant effects when used concurrently; monitor for increased adverse effects and toxicity.

            • maprotiline

              citalopram and maprotiline both increase serotonin levels. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • mavacamten

              citalopram will increase the level or effect of mavacamten by affecting hepatic enzyme CYP2C19 metabolism. Modify Therapy/Monitor Closely. Inititiation of weak CYP2C19 inhibitors may require decreased mavacamten dose.

            • meclofenamate

              citalopram, meclofenamate. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • mefenamic acid

              citalopram, mefenamic acid. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • meloxicam

              citalopram, meloxicam. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • meperidine

              citalopram and meperidine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • metformin

              citalopram increases effects of metformin by pharmacodynamic synergism. Use Caution/Monitor.

            • methadone

              methadone and citalopram both increase QTc interval. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome like reactions. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • methamphetamine

              methamphetamine, citalopram. Either increases effects of the other by unknown mechanism. Use Caution/Monitor. Risk of serotonin syndrome.

            • methyclothiazide

              methyclothiazide, citalopram. pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • methylphenidate transdermal

              methylphenidate transdermal will increase the level or effect of citalopram by decreasing metabolism. Modify Therapy/Monitor Closely. Consider decreasing the dose of these drugs when given coadministered with methylphenidate. Monitor for drug toxiticities when initiating or discontinuing methylphenidate.

            • metolazone

              metolazone, citalopram. pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • metoprolol

              citalopram increases levels of metoprolol by decreasing metabolism. Use Caution/Monitor. Increased metoprolol plasma levels have been associated with decreased cardioselectivity.

            • midazolam intranasal

              midazolam intranasal, citalopram. 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.

            • mifepristone

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

              mifepristone will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. If concurrent therapy considered essential, ECG monitoring recommended

            • mirabegron

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

            • mirtazapine

              citalopram and mirtazapine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • mitotane

              mitotane decreases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Mitotane is a strong inducer of cytochrome P-4503A4; monitor when coadministered with CYP3A4 substrates for possible dosage adjustments.

            • modafinil

              modafinil will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • morphine

              citalopram and morphine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • moxifloxacin

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

            • nabumetone

              citalopram, nabumetone. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • nafcillin

              nafcillin will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • naproxen

              citalopram, naproxen. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • nefazodone

              nefazodone increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • nelfinavir

              nelfinavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Potential for increased toxicity. .

            • nevirapine

              nevirapine will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • nicardipine

              nicardipine increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • nilotinib

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

            • octreotide

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

            • ofloxacin

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

            • oliceridine

              citalopram, oliceridine. Either increases toxicity of the other by serotonin levels. Modify Therapy/Monitor Closely.

            • olodaterol inhaled

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

            • omeprazole

              omeprazole will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • osilodrostat

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

            • osimertinib

              osimertinib and citalopram 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 citalopram by Other (see comment). Use Caution/Monitor. Monitor for ECG changes if therapy is initiated in patients with drugs known to prolong QT interval.

            • oxaprozin

              citalopram, oxaprozin. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • oxycodone

              oxycodone increases effects of citalopram by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Opioids may enhance the serotonergic effects of SSRIs and increase risk for serotonergic syndrome.

            • ozanimod

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

            • pasireotide

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

            • pazopanib

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

            • pentamidine

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

            • pentazocine

              citalopram and pentazocine both increase serotonin levels. Modify Therapy/Monitor Closely.

            • perphenazine

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

            • phenobarbital

              phenobarbital will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • phenytoin

              phenytoin will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • piroxicam

              citalopram, piroxicam. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • posaconazole

              posaconazole will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome like reactions. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • prasugrel

              citalopram increases effects of prasugrel by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • pregabalin

              pregabalin, citalopram. 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.

            • procainamide

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

            • prochlorperazine

              citalopram and prochlorperazine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • promethazine

              citalopram and promethazine both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • propafenone

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

            • propranolol

              citalopram increases levels of propranolol by decreasing metabolism. Use Caution/Monitor.

            • quetiapine

              quetiapine, citalopram. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Avoid use with drugs that prolong QT interval 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. ECG monitoring is recommended.

            • quinidine

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

            • quinine

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

            • quizartinib

              quizartinib, citalopram. Either increases effects of the other by QTc interval. Modify Therapy/Monitor Closely. Monitor patients more frequently with ECG if coadministered with QT prolonging drugs.

            • ranolazine

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

            • remimazolam

              remimazolam, citalopram. 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 will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • rifampin

              rifampin will decrease the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor.

              rifampin will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • rifapentine

              rifapentine will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • rilpivirine

              rilpivirine increases toxicity of citalopram 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

              citalopram will increase the level or effect of risperidone by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • ritonavir

              ritonavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Increased risk of serotonin syndrome. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • rivaroxaban

              citalopram increases effects of rivaroxaban by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • rolapitant

              rolapitant will increase the level or effect of citalopram 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

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

            • rucaparib

              rucaparib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • safinamide

              citalopram, safinamide. Either increases toxicity of the other by serotonin levels. Use Caution/Monitor. Monitor patients for symptoms of serotonin syndrome if SSRIs are coadministered with safinamide.

            • salicylates (non-asa)

              citalopram, salicylates (non-asa). Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • salmeterol

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

            • salsalate

              citalopram, salsalate. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • SAMe

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

            • saquinavir

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

            • secobarbital

              secobarbital will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • selpercatinib

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

            • serdexmethylphenidate/dexmethylphenidate

              serdexmethylphenidate/dexmethylphenidate increases effects of citalopram by decreasing metabolism. Use Caution/Monitor. Potential risk for serotonin syndrome or neuroleptic malignant syndrome-like reactions, caution should be observed during coadministration.

            • sodium sulfate/?magnesium sulfate/potassium chloride

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

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

              citalopram, sodium sulfate/potassium chloride/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.

            • sodium sulfate/potassium sulfate/magnesium sulfate

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

            • sorafenib

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

            • sotalol

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

            • sparsentan

              sparsentan will decrease the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Sparsentan (a CYP2C19 inducer) decreases exposure of CYP2C19 substrates and reduces efficacy related to these substrates.

            • stiripentol

              stiripentol, citalopram. affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. Stiripentol is a CYP3A4 inhibitor and inducer. Monitor CYP3A4 substrates coadministered with stiripentol for increased or decreased effects. CYP3A4 substrates may require dosage adjustment.

              stiripentol will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Modify Therapy/Monitor Closely. Citalopram dose is not to exceed 20 mg/day if used with a moderate CYP2C19 inhibitor. Monitor closely for evidence of citalopram toxicity (eg, serotonin syndrome, QT prolongation)

            • sufentanil SL

              sufentanil SL, citalopram. 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.

            • sulindac

              citalopram, sulindac. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • sunitinib

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

            • tacrolimus

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

            • tapentadol

              citalopram and tapentadol both increase serotonin levels. Modify Therapy/Monitor Closely.

            • tazemetostat

              tazemetostat will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • tecovirimat

              tecovirimat will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Tecovirimat is a weak inhibitor of CYP2C8 and CYP2C19. Monitor for adverse effects if coadministered with sensitive substrates of these enzymes.

              tecovirimat will decrease the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Tecovirimat is a weak CYP3A4 inducer. Monitor sensitive CYP3A4 substrates for effectiveness if coadministered.

            • telavancin

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

            • terbinafine

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

            • thiothixene

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

            • ticagrelor

              citalopram increases effects of ticagrelor by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • ticlopidine

              ticlopidine increases levels of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. Citalopram 20 mg/day is the maximum recommended dose for patients taking CYP2C19 inhibitors because of the risk of QT prolongation.

            • timolol

              citalopram increases levels of timolol by decreasing metabolism. Use Caution/Monitor.

            • tipranavir

              tipranavir increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor.

            • tirofiban

              citalopram increases effects of tirofiban by pharmacodynamic synergism. Use Caution/Monitor. Combination may increase risk of bleeding.

            • tizanidine

              citalopram will increase the level or effect of tizanidine by Other (see comment). Use Caution/Monitor. Monitor for increased psychomotor impairment and adverse effects.

            • tolmetin

              citalopram, tolmetin. Either increases toxicity of the other by pharmacodynamic synergism. Use Caution/Monitor. Increased risk of upper GI bleeding. If possible, avoid concurrent use.

            • toremifene

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

            • torsemide

              torsemide, citalopram. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Possible additive hyponatremia.

            • tramadol

              citalopram and tramadol both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • trazodone

              citalopram and trazodone both increase serotonin levels. Use Caution/Monitor. Combination may increase risk of serotonin syndrome or neuroleptic malignant syndrome-like reactions.

            • triclabendazole

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

              triclabendazole will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor. If plasma concentrations of the CYP2C19 substrates are elevated during triclabendazole, recheck plasma concentration of the CYP2C19 substrates after discontinuation of triclabendazole.

            • valbenazine

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

            • valerian

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

            • vandetanib

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

            • vardenafil

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

            • voclosporin

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

            • vonoprazan

              vonoprazan will increase the level or effect of citalopram by affecting hepatic enzyme CYP2C19 metabolism. Use Caution/Monitor.

            • vorapaxar

              citalopram, vorapaxar. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Additive antiplatelet effect may occur; SSRIs and SNRIs may cause platelet serotonin depletion .

            • voriconazole

              voriconazole increases levels of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. ECG monitoring is recommended, along with drugs that may prolong the QT interval.

            • vorinostat

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

            • warfarin

              citalopram, warfarin. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Serotonin release by platelets plays an important role in hemostasis. SSRIs and SNRIs may increase anticoagulation effect of warfarin. .

            • zanubrutinib

              citalopram, zanubrutinib. Either increases effects of the other by anticoagulation. Modify Therapy/Monitor Closely. Zanubrutinib-induced cytopenias increases risk of hemorrhage. Coadministration of zanubritinib with antiplatelets or anticoagulants may further increase this risk.

            Minor (4)

            • acetazolamide

              acetazolamide will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.

            • anastrozole

              anastrozole will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.

            • cyclophosphamide

              cyclophosphamide will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.

            • larotrectinib

              larotrectinib will increase the level or effect of citalopram by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown.

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            Adverse Effects

            >10%

            Dry mouth (20%)

            Nausea (21%)

            Somnolence (18%)

            Insomnia (15%)

            Xerostomia (20%)

            Increased sweating (11%)

            1-10%

            Tremor (8%)

            Diarrhea (8%)

            Ejaculation disorder (6%)

            Rhinitis (5%)

            Upper respiratory infection (5%)

            Dyspepsia (5%)

            Fatigue (5%)

            Vomiting (4%)

            Anxiety (4%)

            Anorexia (4%)

            Abdominal pain (3%)

            Agitation (3%)

            Impotence (3%)

            Sinusitis (3%)

            Dysmenorrhea (3%)

            Decreased libido (2%)

            Yawning (2%)

            Arthralgia (2%)

            Myalgia (2%)

            Amenorrhea (>1%)

            Confusion (>1%)

            Cough (>1%)

            Flatulence (>1%)

            Increased saliva (>1%)

            Migraine (>1%)

            Orthostatic hypotension (>1%)

            Paresthesia (>1%)

            Polyuria (>1%)

            Pruritus (>1%)

            Rash (>1%)

            Tachycardia (>1%)

            Weight change (>1%)

            Postmarketing Reports

            Anosmia, hyposmia, neuroleptic malignant syndrome

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            Warnings

            Black Box Warnings

            In short-term studies, antidepressants increased the risk of suicidal thinking and behavior in children, adolescents, and young adults (<24 years) taking antidepressants for major depressive disorders and other psychiatric illnesses

            This increase was not seen in patients >24 years; a slight decrease in suicidal thinking was seen in adults >65 years

            In children and young adults, the risks must be weighed against the benefits of taking antidepressants

            Patients should be monitored closely for changes in behavior, clinical worsening, emergence of suicidal thoughts and behavior, and suicidal tendencies; this should be done during initial 1-2 months of therapy and dosage adjustments

            The patient’s family should communicate any abrupt changes in behavior to the healthcare provider

            Worsening behavior and suicidal tendencies that are not part of the presenting symptoms may require discontinuation of therapy

            Not FDA approved for the treatment of bipolar disorder

            This drug is not FDA approved for use in pediatric patients

            Contraindications

            Hypersensitivity

            Coadministration with pimozide

            Coadministration with serotonergic drugs

            • Concomitant use or within 14 days of MAOIs increases risk of serotonin syndrome
            • Symptoms include tremor, myoclonus, diaphoresis, nausea, vomiting, flushing, dizziness, hyperthermia with features resembling neuroleptic malignant syndrome, seizures, rigidity, autonomic instability with possible rapid fluctuations of vital signs, and mental status changes that include extreme agitation progressing to delirium and coma
            • Starting citalopram in a patient who is being treated with linezolid or IV methylene blue is contraindicated because of an increased risk of serotonin syndrome
            • If linezolid or IV methylene blue must be administered, discontinue SSRI immediately and monitor for CNS toxicity; may resume 24 hr after last linezolid or methylene blue dose, or after 2 weeks of monitoring (5 weeks for fluoxetine), whichever comes first

            Cautions

            Pregnancy: Conflicting evidence regarding use of SSRIs during pregnancy and increased risk of persistent pulmonary hypertension of the newborn, or PPHN (see Pregnancy)

            Neonates exposed to SNRIs/SSRIs late in third trimester: Risk of complications such as feeding difficulties, irritability, and respiratory problems

            Clinical worsening and suicide ideation may occur despite medication in adolescents and young adults (18-24 years)

            Risk of mydriasis; may trigger angle closure attack in patients with angle closure glaucoma with anatomically narrow angles without a patent iridectomy

            Risk of hyponatremia, abnormal bleeding (increased if concomitant aspirin, NSAIDs, or anticoagulants, or hemorrhagic diathesis), and impairment of cognitive and motor functions

            Risk of serotonin syndrome or neuroleptic malignant syndrome (NMS)-like reactions have been reported with SSRIs alone or with concomitant use of serotonergic drugs, with drugs that impair metabolism of serotonin, or with antipsychotics or other dopamine antagonists

            Activation of mania/hypomania has been reported; use caution when treating patients with history of mania

            Increased risk of bone fractures reported with antidepressant use; use caution; consider possibility of fracture it patient presents with bone pain

            May cause or exacerbate sexual dysfunction

            Use caution when treating patients with history of seizure disorder

            Rare cases of hyponatremia and development of SIADH reported with either SSRI or SNRI use

            Consider risk of serotonin syndrome if administered concomitantly with other serotonergic drugs including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, buspirone, meperidine, methadone, amphetamines, and St. John’s Wort; serotonin syndrome can also occur when these drugs are used alone

            Not recommended in patients with uncompensated heart failure

            Sexual dysfunction

            • Use may cause symptoms of sexual dysfunction in both male and female patients; inform patients that they should discuss any changes in sexual function and potential management strategies with their healthcare provider
            • Use of SSRIs, may cause symptoms of sexual dysfunction; in male patients, SSRI use may result in ejaculatory delay or failure, decreased libido, and erectile dysfunction
            • In female patients, SSRI/SNRI use may result in decreased libido and delayed or absent orgasm
            • Important for prescribers to inquire about sexual function prior to initiation of therapy and to inquire specifically about changes in sexual function during treatment, because sexual function may not be spontaneously reported
            • When evaluating changes in sexual function, obtaining a detailed history (including timing of symptom onset) is important because sexual symptoms may have other causes, including underlying psychiatric disorder
            • Discuss potential management strategies to support patients in making informed decisions about treatment

            QT prolongation

            • Dose-dependent QT prolongation reported; do not exceed dose of 40 mg/day
            • Correct hypokalemia and hypomagnesemia before initiating and monitor periodically
            • ECG monitoring recommended in patients with CHF, bradyarrhythmias, or concomitant medications known to prolong QT interval
            • Do not exceed 20 mg/day if administered in CYP2C19 poor metabolizers, or in patients taking concomitant cimetidine or another CYP2C19 inhibitor (eg, fluconazole, omeprazole)
            • Do not exceed 20 mg/day in individuals aged 60 yr or older, or those with hepatic impairment
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            Pregnancy & Lactation

            Pregnancy

            There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antidepressants during pregnancy; healhcare providers are encouraged to register patients by calling the National Pregnancy Registry for Antidepressants at 1-844-405-6185 or visiting online athttps://womensmentalhealth.org/research/pregnancyregistry/antidepressants

            Available data from published epidemiologic studies and postmarketing reports with citalopram use in pregnancy have not established an increased risk of major birth defects or miscarriage; published studies demonstrated that citalopram levels in both cord blood and amniotic fluid are similar to those observed in maternal serum. There are risks of persistent pulmonary hypertension of the newborn (PPHN) and/or poor neonatal adaptation with exposure during pregnancy; there also are risks associated with untreated depression in pregnancy

            In animal reproduction studies, citalopram caused adverse embryo/fetal effects at doses that caused maternal toxicity

            Women who discontinue antidepressants during pregnancy are more likely to experience a relapse of major depression than women who continue antidepressants; consider risk of untreated depression when discontinuing or changing treatment with antidepressant medication during pregnancy and postpartum

            Neonates exposed to this drug late in third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding; such complications can arise immediately upon delivery

            Reported clinical findings have included respiratory distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia, hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability, and constant crying; these findings are consistent with either a direct toxic effect of SSRIs or possibly, a drug discontinuation syndrome; it should be noted that, in some cases, the clinical picture is consistent with serotonin syndrome

            Exposure to SSRIs, particularly in month before delivery, associated with <2-fold increase in risk of postpartum hemorrhage; bleeding events related to drugs that interfere with serotonin reuptake have ranged from ecchymosis, hematoma, epistaxis, and petechiae to life-threatening hemorrhages

            Use in the month before delivery may be associated with an increased risk of postpartum hemorrhage

            Persistent pulmonary hypertension of the newborn

            • Potential risk of PPHN when used during pregnancy
            • Initial public health advisory, in 2006, was based on a single published study; since then, there have been conflicting findings from new studies, making it unclear whether use of SSRIs during pregnancy can cause PPHN
            • FDA has reviewed the additional new study results and has concluded that, given the conflicting results from different studies, it is premature to reach any conclusion about a possible link between SSRI use in pregnancy and PPHN
            • FDA recommendation: FDA advises health care professionals not to alter their current clinical practice of treating depression during pregnancy and to report any adverse events to the FDA MedWatch program
            • A meta-analysis of 7 observational studies, found exposure to SSRIs in late pregnancy (ie, >20 weeks' gestation) more than doubled the risk of PPHN that could not be explained by other etiologies (eg, congenital malformations, meconium aspiration) (BMJ 2014;348:f6932)

            Lactation

            Presence of citalopram in human milk at relative infant doses ranging between 0.7 to 9.4% of maternal weight-adjusted dosage and a milk/plasma ratio ranging between 0.78 to 4.3 reported

            There are reports of breastfed infants exposed to this drug experiencing irritability, restlessness, excessive somnolence, decreased feeding, and weight loss

            There is no information about effects of this drug on milk production; developmental and health benefits of breastfeeding should be considered along with mother’s clinical need for this drug and any potential adverse effects on the breastfed child from this drug or from underlying maternal condition

            Monitor breastfeeding infants for adverse reactions, such as irritability, restlessness, excessive somnolence, decreased feeding, and weight loss

            Pregnancy Categories

            A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.

            B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.

            C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.

            D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.

            X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.

            NA: Information not available.

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            Pharmacology

            Mechanism of Action

            Inhibits the reuptake of serotonin in presynaptic neurons; little or no affinity for dopamine, alpha-adrenergic histamine, or cholinergic receptor

            Absorption

            Bioavailability: 80%

            Peak serum time: 1-6 hr (4 hr average)

            Onset: 1-4 weeks for depression; full response may not be seen until 8-12 weeks after initiating treatment

            Distribution

            Protein bound: 80%

            Vd: 12 L/kg

            Metabolism

            Mainly via hepatic P450 enzymes CYP3A4 and CYP2C19

            Metabolites: Insignificant potency

            Elimination

            Half-life: 24-48 hr

            Dialyzable: No

            Renal clearance: 66 mL/min

            Total body clearance: 330 mL/min

            Excretion: Urine (10%)

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            Images

            BRAND FORM. UNIT PRICE PILL IMAGE
            Celexa oral
            -
            20 mg tablet
            Celexa oral
            -
            10 mg tablet
            Celexa oral
            -
            40 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            10 mg/5 mL solution
            citalopram oral
            -
            10 mg/5 mL solution
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            10 mg/5 mL solution
            citalopram oral
            -
            10 mg tablet
            citalopram oral
            -
            10 mg/5 mL solution
            citalopram oral
            -
            30 mg capsule
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            20 mg tablet
            citalopram oral
            -
            40 mg tablet
            citalopram oral
            -
            20 mg tablet

            Copyright © 2010 First DataBank, Inc.

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            Patient Handout

            Patient Education
            citalopram oral

            CITALOPRAM - ORAL

            (sye-TAL-oh-pram)

            COMMON BRAND NAME(S): Celexa

            WARNING: Antidepressant medications are used to treat a variety of conditions, including depression and other mental/mood disorders. These medications can help prevent suicidal thoughts/attempts and provide other important benefits. However, studies have shown that a small number of people (especially people younger than 25) who take antidepressants for any condition may experience worsening depression, other mental/mood symptoms, or suicidal thoughts/attempts. It is very important to talk with the doctor about the risks and benefits of antidepressant medication (especially for people younger than 25), even if treatment is not for a mental/mood condition.Tell the doctor right away if you notice worsening depression/other psychiatric conditions, unusual behavior changes (including possible suicidal thoughts/attempts), or other mental/mood changes (including new/worsening anxiety, panic attacks, trouble sleeping, irritability, hostile/angry feelings, impulsive actions, severe restlessness, very rapid speech). Be especially watchful for these symptoms when a new antidepressant is started or when the dose is changed.

            USES: Citalopram is used to treat depression. It may improve your energy level and feelings of well-being. Citalopram is known as a selective serotonin reuptake inhibitor (SSRI). This medication works by helping to restore the balance of a certain natural substance (serotonin) in the brain.

            HOW TO USE: Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start taking citalopram and each time you get a refill. If you have any questions, ask your doctor or pharmacist.Take this medication with or without food as directed by your doctor, usually once daily in the morning or evening. The dosage is based on your medical condition, response to treatment, age, lab tests, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.To reduce your risk of side effects, your doctor may direct you to start taking this drug at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Do not increase your dose or use this drug more often or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase. Take this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day.Keep taking this medication even if you feel well. Do not stop taking this medication without consulting your doctor. Some conditions may become worse when this drug is suddenly stopped. Also, you may experience symptoms such as mood swings, headache, tiredness, sleep changes, and brief feelings similar to electric shock. To prevent these symptoms while you are stopping treatment with this drug, your doctor may reduce your dose gradually. Consult your doctor or pharmacist for more details. Report any new or worsening symptoms right away.It may take 1 to 4 weeks to feel a benefit from this drug and up to several weeks before you get the full benefit.Tell your doctor if your condition does not improve or if it worsens.

            SIDE EFFECTS: See also Warning and Precautions sections.Nausea, dry mouth, loss of appetite, tiredness, drowsiness, sweating, blurred vision, and yawning may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor right away if you have any serious side effects, including: shaking (tremor), decreased interest in sex, changes in sexual ability, easy bleeding/bruising.Get medical help right away if you have any very serious side effects, including: fainting, fast/irregular heartbeat, black stools, vomit that looks like coffee grounds, seizures, eye pain/swelling/redness, widened pupils, vision changes (such as seeing rainbows around lights at night).This medication may increase serotonin and rarely cause a very serious condition called serotonin syndrome/toxicity. The risk increases if you are also taking other drugs that increase serotonin, so tell your doctor or pharmacist of all the drugs you take (see Drug Interactions section). Get medical help right away if you develop some of the following symptoms: fast heartbeat, hallucinations, loss of coordination, severe dizziness, severe nausea/vomiting/diarrhea, twitching muscles, unexplained fever, unusual agitation/restlessness.Rarely, males may have a painful or prolonged erection lasting 4 or more hours. If this occurs, stop using this drug and get medical help right away, or permanent problems could occur.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

            PRECAUTIONS: Before taking citalopram, tell your doctor or pharmacist if you are allergic to it; or to escitalopram; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: personal or family history of bipolar/manic-depressive disorder, personal or family history of suicide attempts, liver disease, seizures, low sodium in the blood, bleeding problems, personal or family history of glaucoma (angle-closure type).Citalopram may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using citalopram, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, recent heart attack, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using citalopram safely.This drug may make you drowsy or blur your vision. Alcohol or marijuana (cannabis) can make you more drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Older adults may be more sensitive to the side effects of this drug, especially bleeding, loss of coordination, and QT prolongation (see above). They may also be more likely to develop a type of salt imbalance (hyponatremia), especially if they are also taking "water pills" (diuretics). Loss of coordination can increase the risk of falling.Children may be more sensitive to the side effects of this drug, especially loss of appetite and weight loss. Monitor weight and height in children who are taking this drug.During pregnancy, this medication should be used only when clearly needed. It may harm an unborn baby. Also, babies born to mothers who have used this drug during the last 3 months of pregnancy may rarely develop withdrawal symptoms such as feeding/breathing difficulties, seizures, muscle stiffness, or constant crying. If you notice any of these symptoms in your newborn, tell the doctor promptly.Since untreated mental/mood problems (such as depression, obsessive-compulsive disorder, panic disorder) can be a serious condition, do not stop taking this medication unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, immediately discuss with your doctor the benefits and risks of using this medication during pregnancy.This drug passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.

            DRUG INTERACTIONS: See also Precautions section.Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug are: other drugs that can cause bleeding/bruising (including antiplatelet drugs such as clopidogrel, NSAIDs such as ibuprofen/naproxen, "blood thinners" such as dabigatran/warfarin).Aspirin can increase the risk of bleeding when used with this medication. However, if your doctor has directed you to take low-dose aspirin for heart attack or stroke prevention (usually 81-162 milligrams a day), you should continue taking it unless your doctor instructs you otherwise. Ask your doctor or pharmacist for more details.Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, metaxalone, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before and after treatment with this medication. Ask your doctor when to start or stop taking this medication.The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/"ecstasy," St. John's wort, certain antidepressants (including other SSRIs such as fluoxetine/paroxetine, SNRIs such as duloxetine/venlafaxine), tryptophan, among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs.Tell your doctor or pharmacist if you are taking other products that cause drowsiness including alcohol, marijuana (cannabis), antihistamines (such as cetirizine, diphenhydramine), drugs for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants, and opioid pain relievers (such as codeine).Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.Many drugs besides citalopram may affect the heart rhythm (QT prolongation), including amiodarone, pimozide, procainamide, quinidine, sotalol, among others.Citalopram is very similar to escitalopram. Do not use medications containing escitalopram while using citalopram.This medication may interfere with certain medical/lab tests (such as brain scan for Parkinson's disease), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.

            OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.

            NOTES: Do not share this medication with others.Lab and/or medical tests (such as EKG) should be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.

            MISSED DOSE: If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

            STORAGE: Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

            Information last revised August 2023. Copyright(c) 2023 First Databank, Inc.

            IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.

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            Formulary

            FormularyPatient Discounts

            Adding plans allows you to compare formulary status to other drugs in the same class.

            To view formulary information first create a list of plans. Your list will be saved and can be edited at any time.

            Adding plans allows you to:

            • View the formulary and any restrictions for each plan.
            • Manage and view all your plans together – even plans in different states.
            • Compare formulary status to other drugs in the same class.
            • Access your plan list on any device – mobile or desktop.

            The above information is provided for general informational and educational purposes only. Individual plans may vary and formulary information changes. Contact the applicable plan provider for the most current information.

            Tier Description
            1 This drug is available at the lowest co-pay. Most commonly, these are generic drugs.
            2 This drug is available at a middle level co-pay. Most commonly, these are "preferred" (on formulary) brand drugs.
            3 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs.
            4 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
            5 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
            6 This drug is available at a higher level co-pay. Most commonly, these are "non-preferred" brand drugs or specialty prescription products.
            NC NOT COVERED – Drugs that are not covered by the plan.
            Code Definition
            PA Prior Authorization
            Drugs that require prior authorization. This restriction requires that specific clinical criteria be met prior to the approval of the prescription.
            QL Quantity Limits
            Drugs that have quantity limits associated with each prescription. This restriction typically limits the quantity of the drug that will be covered.
            ST Step Therapy
            Drugs that have step therapy associated with each prescription. This restriction typically requires that certain criteria be met prior to approval for the prescription.
            OR Other Restrictions
            Drugs that have restrictions other than prior authorization, quantity limits, and step therapy associated with each prescription.
            Additional Offers
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            Medscape prescription drug monographs are based on FDA-approved labeling information, unless otherwise noted, combined with additional data derived from primary medical literature.