Dosing & Uses
Dosage Forms & Strengths
solution for inhalation
- 20mcg/2mL
Chronic Obstructive Pulmonary Disease (COPD)
Indicated for long-term maintenance treatment of bronchoconstriction in patients with COPD
Perforomist: 20 mcg inhaled via nebulizer q12hr
Safety and efficacy not established
Interactions
Interaction Checker
No Results
Contraindicated
Serious - Use Alternative
Significant - Monitor Closely
Minor
Contraindicated (0)
Serious - Use Alternative (70)
- amisulpride
amisulpride and formoterol both increase QTc interval. Avoid or Use Alternate Drug. ECG monitoring is recommended if coadministered.
- amitriptyline
amitriptyline and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
amitriptyline, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - amoxapine
amoxapine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
amoxapine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - arformoterol
arformoterol and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- artemether/lumefantrine
formoterol and artemether/lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.
- chlorpromazine
chlorpromazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- clarithromycin
clarithromycin and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- clomipramine
clomipramine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
clomipramine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - desipramine
desipramine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
desipramine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - disopyramide
disopyramide and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- dofetilide
dofetilide and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- doxepin
doxepin and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
doxepin, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - dronedarone
dronedarone and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- droperidol
droperidol and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- entrectinib
formoterol and entrectinib both increase QTc interval. Avoid or Use Alternate Drug.
- epinephrine
epinephrine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- epinephrine racemic
epinephrine racemic and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- erythromycin base
erythromycin base and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- erythromycin ethylsuccinate
erythromycin ethylsuccinate and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- erythromycin lactobionate
erythromycin lactobionate and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- erythromycin stearate
erythromycin stearate and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- fexinidazole
fexinidazole and formoterol both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of fexinidazole with drugs known to block potassium channels or prolong QT interval.
- fluconazole
fluconazole and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- fluphenazine
fluphenazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- glasdegib
formoterol and glasdegib both increase QTc interval. Avoid or Use Alternate Drug. If coadministration unavoidable, monitor for increased risk of QTc interval prolongation.
- haloperidol
formoterol and haloperidol both increase QTc interval. Avoid or Use Alternate Drug.
- hydroxychloroquine sulfate
hydroxychloroquine sulfate and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- ibutilide
formoterol and ibutilide both increase QTc interval. Avoid or Use Alternate Drug.
- imipramine
imipramine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
imipramine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - indapamide
formoterol and indapamide both increase QTc interval. Avoid or Use Alternate Drug.
- inotuzumab
inotuzumab and formoterol 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.
- isocarboxazid
isocarboxazid increases effects of formoterol by pharmacodynamic synergism. Contraindicated. Risk of acute hypertensive episode.
- ivosidenib
ivosidenib and formoterol both increase QTc interval. Avoid or Use Alternate Drug. Avoid coadministration of QTc prolonging drugs with ivosidenib or replace with alternate therapies. If coadministration of a QTc prolonging drug is unavoidable, monitor for increased risk of QTc interval prolongation.
- ketoconazole
formoterol and ketoconazole both increase QTc interval. Avoid or Use Alternate Drug.
- lefamulin
lefamulin and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- levoketoconazole
formoterol and levoketoconazole both increase QTc interval. Avoid or Use Alternate Drug.
- linezolid
linezolid increases effects of formoterol by pharmacodynamic synergism. Contraindicated. Risk of acute hypertensive episode.
- lofepramine
lofepramine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
lofepramine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - lumefantrine
formoterol and lumefantrine both increase QTc interval. Avoid or Use Alternate Drug.
- macimorelin
macimorelin and formoterol 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
maprotiline and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
maprotiline, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - mobocertinib
mobocertinib and formoterol both increase QTc interval. Avoid or Use Alternate Drug. If coadministration unavoidable, reduce mobocertinib dose and monitor QTc interval more frequently.
- moxifloxacin
formoterol and moxifloxacin both increase QTc interval. Avoid or Use Alternate Drug.
- nilotinib
formoterol and nilotinib both increase QTc interval. Avoid or Use Alternate Drug.
- nortriptyline
nortriptyline and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
nortriptyline, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - octreotide
formoterol and octreotide both increase QTc interval. Avoid or Use Alternate Drug.
- octreotide (Antidote)
formoterol and octreotide (Antidote) both increase QTc interval. Avoid or Use Alternate Drug.
- ondansetron
formoterol 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.
- panobinostat
formoterol 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.
- pentamidine
formoterol and pentamidine both increase QTc interval. Avoid or Use Alternate Drug.
- perphenazine
perphenazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- phenelzine
phenelzine increases effects of formoterol by pharmacodynamic synergism. Contraindicated. Risk of acute hypertensive episode.
- pimozide
formoterol and pimozide both increase QTc interval. Avoid or Use Alternate Drug.
- pitolisant
formoterol and pitolisant both increase QTc interval. Avoid or Use Alternate Drug.
- primaquine
primaquine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- procainamide
formoterol and procainamide both increase QTc interval. Avoid or Use Alternate Drug.
- prochlorperazine
prochlorperazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- promazine
promazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- promethazine
promethazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- protriptyline
protriptyline and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
protriptyline, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - quinidine
quinidine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- sotalol
formoterol and sotalol both increase QTc interval. Avoid or Use Alternate Drug. Drugs known to prolong the QTc interval may potentiate the cardiovascular effects of formoterol.
sotalol and formoterol both increase QTc interval. Avoid or Use Alternate Drug. Drugs known to prolong the QTc interval may potentiate the cardiovascular effects of formoterol. - thioridazine
thioridazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- tranylcypromine
tranylcypromine increases effects of formoterol by pharmacodynamic synergism. Contraindicated. Risk of acute hypertensive episode.
- trazodone
trazodone and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
trazodone, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - trifluoperazine
trifluoperazine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
- trimipramine
trimipramine and formoterol both increase QTc interval. Avoid or Use Alternate Drug.
trimipramine, formoterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron. - umeclidinium bromide/vilanterol inhaled
formoterol 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.
- vilanterol/fluticasone furoate inhaled
formoterol 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.
- ziprasidone
formoterol and ziprasidone both increase QTc interval. Avoid or Use Alternate Drug.
Monitor Closely (283)
- acebutolol
acebutolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
acebutolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - aceclofenac
aceclofenac increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- acemetacin
acemetacin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- albuterol
albuterol and formoterol both decrease serum potassium. Use Caution/Monitor.
albuterol and formoterol both decrease sedation. Use Caution/Monitor.
albuterol and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - alfentanil
alfentanil increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- alfuzosin
formoterol and alfuzosin both increase QTc interval. Use Caution/Monitor.
alfuzosin and formoterol both increase QTc interval. Use Caution/Monitor. - alprazolam
alprazolam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- amiloride
amiloride increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- amiodarone
amiodarone and formoterol both increase QTc interval. Use Caution/Monitor.
- amitriptyline
amitriptyline increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- amobarbital
amobarbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- amoxapine
amoxapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- apomorphine
apomorphine and formoterol both increase QTc interval. Use Caution/Monitor.
- arformoterol
arformoterol and formoterol both decrease serum potassium. Use Caution/Monitor.
arformoterol and formoterol both decrease sedation. Use Caution/Monitor.
arformoterol and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - aripiprazole
aripiprazole increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
aripiprazole and formoterol both increase QTc interval. Use Caution/Monitor. - armodafinil
formoterol and armodafinil both decrease sedation. Use Caution/Monitor.
- arsenic trioxide
arsenic trioxide and formoterol both increase QTc interval. Use Caution/Monitor.
- artemether
artemether and formoterol both increase QTc interval. Use Caution/Monitor.
- aspirin
aspirin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- aspirin rectal
aspirin rectal increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .
- aspirin/citric acid/sodium bicarbonate
aspirin/citric acid/sodium bicarbonate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- atenolol
atenolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
atenolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - atomoxetine
formoterol, atomoxetine. Other (see comment). Use Caution/Monitor. Comment: Exercise caution if beta-agonists and atomoxetine are coadministered. Interaction may be less likely with inhaled beta-agonists versus those given systemically. .
atomoxetine and formoterol both increase QTc interval. Use Caution/Monitor. - azelastine
azelastine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- azithromycin
azithromycin and formoterol both increase QTc interval. Use Caution/Monitor.
- bedaquiline
formoterol and bedaquiline both increase QTc interval. Modify Therapy/Monitor Closely. ECG should be monitored closely
- belladonna and opium
belladonna and opium increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- bendroflumethiazide
formoterol and bendroflumethiazide both decrease serum potassium. Use Caution/Monitor.
- benperidol
benperidol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- benzphetamine
formoterol and benzphetamine both decrease sedation. Use Caution/Monitor.
formoterol and benzphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - betaxolol
betaxolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
betaxolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - bisoprolol
bisoprolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
bisoprolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - brompheniramine
brompheniramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- bumetanide
formoterol and bumetanide both decrease serum potassium. Use Caution/Monitor.
- buprenorphine buccal
buprenorphine buccal increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- butabarbital
butabarbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- butalbital
butalbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- butorphanol
butorphanol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- caffeine
formoterol and caffeine both decrease sedation. Use Caution/Monitor.
- carbenoxolone
formoterol and carbenoxolone both decrease serum potassium. Use Caution/Monitor.
- carbinoxamine
carbinoxamine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- carvedilol
carvedilol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
carvedilol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - celecoxib
celecoxib increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- celiprolol
celiprolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
celiprolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - ceritinib
ceritinib and formoterol both increase QTc interval. Use Caution/Monitor.
- chloral hydrate
chloral hydrate increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- chlordiazepoxide
chlordiazepoxide increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- chlorothiazide
formoterol and chlorothiazide both decrease serum potassium. Use Caution/Monitor.
- chlorpheniramine
chlorpheniramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- chlorpromazine
chlorpromazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- chlorthalidone
formoterol and chlorthalidone both decrease serum potassium. Use Caution/Monitor.
- choline magnesium trisalicylate
choline magnesium trisalicylate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .
- cinnarizine
cinnarizine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- clemastine
clemastine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- clomipramine
clomipramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- clonazepam
clonazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- clorazepate
clorazepate increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- clozapine
clozapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- codeine
codeine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- cyclizine
cyclizine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- cyclopenthiazide
formoterol and cyclopenthiazide both decrease serum potassium. Use Caution/Monitor.
- cyproheptadine
cyproheptadine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dasatinib
dasatinib and formoterol both increase QTc interval. Modify Therapy/Monitor Closely.
- deflazacort
formoterol and deflazacort both decrease serum potassium. Use Caution/Monitor.
- degarelix
degarelix and formoterol both increase QTc interval. Use Caution/Monitor.
- desipramine
desipramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dexchlorpheniramine
dexchlorpheniramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dexfenfluramine
formoterol and dexfenfluramine both decrease sedation. Use Caution/Monitor.
formoterol and dexfenfluramine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - dexmedetomidine
dexmedetomidine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dexmethylphenidate
formoterol and dexmethylphenidate both decrease sedation. Use Caution/Monitor.
formoterol and dexmethylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - dextroamphetamine
formoterol and dextroamphetamine both decrease sedation. Use Caution/Monitor.
formoterol and dextroamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - dextromoramide
dextromoramide increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- diamorphine
diamorphine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dichlorphenamide
dichlorphenamide and formoterol both decrease serum potassium. Use Caution/Monitor.
dichlorphenamide, formoterol. Either increases toxicity of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Both drugs can cause metabolic acidosis. - diclofenac
diclofenac increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- diethylpropion
formoterol and diethylpropion both decrease sedation. Use Caution/Monitor.
formoterol and diethylpropion both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - difenoxin hcl
difenoxin hcl increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- diflunisal
diflunisal increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- digoxin
digoxin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dimenhydrinate
dimenhydrinate increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- diphenhydramine
diphenhydramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- diphenoxylate hcl
diphenoxylate hcl increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dipipanone
dipipanone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- dobutamine
dobutamine and formoterol both decrease serum potassium. Use Caution/Monitor.
dobutamine and formoterol both decrease sedation. Use Caution/Monitor.
dobutamine and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - dolasetron
dolasetron and formoterol both increase QTc interval. Modify Therapy/Monitor Closely.
- donepezil
donepezil and formoterol both increase QTc interval. Use Caution/Monitor.
- dopamine
formoterol and dopamine both decrease sedation. Use Caution/Monitor.
formoterol and dopamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - dopexamine
dopexamine and formoterol both decrease serum potassium. Use Caution/Monitor.
dopexamine and formoterol both decrease sedation. Use Caution/Monitor.
dopexamine and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.
dopexamine, formoterol. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. - doxepin
doxepin increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- droperidol
droperidol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- drospirenone
drospirenone increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- efavirenz
efavirenz and formoterol both increase QTc interval. Use Caution/Monitor.
- encorafenib
encorafenib and formoterol both increase QTc interval. Use Caution/Monitor.
- ephedrine
ephedrine and formoterol both decrease serum potassium. Use Caution/Monitor.
ephedrine and formoterol both decrease sedation. Use Caution/Monitor.
ephedrine and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - epinephrine
epinephrine and formoterol both decrease serum potassium. Use Caution/Monitor.
epinephrine and formoterol both decrease sedation. Use Caution/Monitor.
epinephrine and formoterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - epinephrine racemic
formoterol and epinephrine racemic both decrease serum potassium. Use Caution/Monitor.
formoterol and epinephrine racemic both decrease sedation. Use Caution/Monitor.
formoterol and epinephrine racemic both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - eribulin
eribulin and formoterol both increase QTc interval. Use Caution/Monitor.
- escitalopram
escitalopram increases toxicity of formoterol by QTc interval. Use Caution/Monitor.
- esmolol
esmolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
esmolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - estazolam
estazolam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ethacrynic acid
formoterol and ethacrynic acid both decrease serum potassium. Use Caution/Monitor.
- ethanol
ethanol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- etodolac
etodolac increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- fenfluramine
formoterol and fenfluramine both decrease sedation. Use Caution/Monitor.
formoterol and fenfluramine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - fenoprofen
fenoprofen increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- fingolimod
fingolimod and formoterol both increase QTc interval. Use Caution/Monitor.
- flecainide
flecainide and formoterol both increase QTc interval. Modify Therapy/Monitor Closely.
- fluoxetine
fluoxetine and formoterol both increase QTc interval. Modify Therapy/Monitor Closely. Fluoxetine prolongs the QT interval; the prescribing information for fluoxetine recommends avoiding concurrent use of other drugs that may prolong the QT interval; risk may be increased with higher doses and/or when associated with hypokalemia; drugs that prolong the QTc interval may potentiate the effects of beta2 agonists on the cardiovascular system
- fluphenazine
fluphenazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- flurazepam
flurazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- flurbiprofen
flurbiprofen increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- fluvoxamine
fluvoxamine and formoterol both increase QTc interval. Modify Therapy/Monitor Closely.
- foscarnet
formoterol and foscarnet both increase QTc interval. Modify Therapy/Monitor Closely.
- fostemsavir
formoterol and fostemsavir both increase QTc interval. Use Caution/Monitor. QTc prolongation reported with higher than recommended doses of fostemsavir.
- furosemide
formoterol and furosemide both decrease serum potassium. Use Caution/Monitor.
- gemifloxacin
gemifloxacin and formoterol both increase QTc interval. Use Caution/Monitor.
- gentamicin
formoterol and gentamicin both decrease serum potassium. Use Caution/Monitor.
- gilteritinib
gilteritinib and formoterol both increase QTc interval. Use Caution/Monitor.
- goserelin
goserelin increases toxicity of formoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.
- haloperidol
haloperidol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- histrelin
histrelin increases toxicity of formoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.
- hydrochlorothiazide
formoterol and hydrochlorothiazide both decrease serum potassium. Use Caution/Monitor.
- hydromorphone
hydromorphone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- hydroxyzine
hydroxyzine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ibuprofen
ibuprofen increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ibuprofen IV
ibuprofen IV increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- iloperidone
formoterol and iloperidone both increase QTc interval. Modify Therapy/Monitor Closely.
iloperidone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. - imipramine
imipramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- indapamide
formoterol and indapamide both decrease serum potassium. Use Caution/Monitor.
- indomethacin
indomethacin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- isoproterenol
formoterol and isoproterenol both decrease serum potassium. Use Caution/Monitor.
formoterol and isoproterenol both decrease sedation. Use Caution/Monitor.
formoterol and isoproterenol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - itraconazole
itraconazole and formoterol both increase QTc interval. Use Caution/Monitor.
- ketoprofen
ketoprofen increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ketorolac
ketorolac increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ketorolac intranasal
ketorolac intranasal increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .
- ketotifen, ophthalmic
ketotifen, ophthalmic increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- labetalol
labetalol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
labetalol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - lapatinib
formoterol and lapatinib both increase QTc interval. Modify Therapy/Monitor Closely.
- lenvatinib
formoterol and lenvatinib both increase QTc interval. Use Caution/Monitor. Lenvatinib prescribing information recommends monitoring ECG closely when coadministered with QT prolonging drugs.
- leuprolide
leuprolide increases toxicity of formoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.
- levalbuterol
formoterol and levalbuterol both decrease serum potassium. Use Caution/Monitor.
formoterol and levalbuterol both decrease sedation. Use Caution/Monitor.
formoterol and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - levofloxacin
formoterol and levofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.
- levorphanol
levorphanol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- lisdexamfetamine
formoterol and lisdexamfetamine both decrease sedation. Use Caution/Monitor.
formoterol and lisdexamfetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - lofepramine
lofepramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- lofexidine
lofexidine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- loprazolam
loprazolam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- lorazepam
lorazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- lormetazepam
lormetazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- lornoxicam
lornoxicam increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- loxapine
loxapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- loxapine inhaled
loxapine inhaled increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- maprotiline
maprotiline increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- marijuana
marijuana increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- meclofenamate
meclofenamate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- mefenamic acid
mefenamic acid increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- melatonin
melatonin increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- meloxicam
meloxicam increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- meperidine
meperidine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- meprobamate
meprobamate increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- metaproterenol
formoterol and metaproterenol both decrease serum potassium. Use Caution/Monitor.
formoterol and metaproterenol both decrease sedation. Use Caution/Monitor.
formoterol and metaproterenol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - methadone
formoterol and methadone both increase QTc interval. Modify Therapy/Monitor Closely.
methadone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. - methamphetamine
formoterol and methamphetamine both decrease sedation. Use Caution/Monitor.
formoterol and methamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - methyclothiazide
formoterol and methyclothiazide both decrease serum potassium. Use Caution/Monitor.
- methylenedioxymethamphetamine
formoterol and methylenedioxymethamphetamine both decrease sedation. Use Caution/Monitor.
formoterol and methylenedioxymethamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - methylphenidate
formoterol and methylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.
- metolazone
formoterol and metolazone both decrease serum potassium. Use Caution/Monitor.
- metoprolol
metoprolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
metoprolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - midazolam
midazolam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- midodrine
formoterol and midodrine both decrease sedation. Use Caution/Monitor.
formoterol and midodrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - mifepristone
mifepristone, formoterol. QTc interval. Modify Therapy/Monitor Closely. Use alternatives if available.
- mirtazapine
mirtazapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- modafinil
formoterol and modafinil both decrease sedation. Use Caution/Monitor.
- morphine
morphine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- motherwort
motherwort increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- moxonidine
moxonidine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- nabilone
nabilone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- nabumetone
nabumetone increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- nadolol
nadolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
nadolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - nalbuphine
nalbuphine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- naproxen
naproxen increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- nebivolol
nebivolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
nebivolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - norepinephrine
formoterol and norepinephrine both decrease serum potassium. Use Caution/Monitor.
formoterol and norepinephrine both decrease sedation. Use Caution/Monitor.
formoterol and norepinephrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - nortriptyline
nortriptyline increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ofloxacin
formoterol and ofloxacin both increase QTc interval. Modify Therapy/Monitor Closely.
- olanzapine
olanzapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- olodaterol inhaled
formoterol and olodaterol inhaled both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. Caution with coadministration of adrenergic drugs by any route because of additive sympathetic effects
- opium tincture
opium tincture increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- osilodrostat
osilodrostat and formoterol both increase QTc interval. Use Caution/Monitor.
- osimertinib
osimertinib and formoterol 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 formoterol 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
oxaprozin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- oxazepam
oxazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- oxycodone
oxycodone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- oxymorphone
oxymorphone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ozanimod
ozanimod and formoterol 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
formoterol and paliperidone both increase QTc interval. Modify Therapy/Monitor Closely.
paliperidone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. - papaveretum
papaveretum increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- parecoxib
parecoxib increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- paroxetine
formoterol and paroxetine both increase QTc interval. Modify Therapy/Monitor Closely.
- pasireotide
formoterol and pasireotide both increase QTc interval. Modify Therapy/Monitor Closely.
- pazopanib
formoterol and pazopanib both increase QTc interval. Use Caution/Monitor.
- penbutolol
penbutolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
penbutolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - pentazocine
pentazocine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pentobarbital
pentobarbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- perphenazine
perphenazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- phendimetrazine
formoterol and phendimetrazine both decrease sedation. Use Caution/Monitor.
formoterol and phendimetrazine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - phenobarbital
phenobarbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- phenoxybenzamine
phenoxybenzamine, formoterol. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Hypotension, tachycardia.
- phentermine
formoterol and phentermine both decrease sedation. Use Caution/Monitor.
formoterol and phentermine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - phenylephrine
formoterol and phenylephrine both decrease sedation. Use Caution/Monitor.
formoterol and phenylephrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - phenylephrine PO
formoterol and phenylephrine PO both decrease sedation. Use Caution/Monitor.
formoterol and phenylephrine PO both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - pholcodine
pholcodine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pimozide
pimozide increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pindolol
pindolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
pindolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - pirbuterol
formoterol and pirbuterol both decrease serum potassium. Use Caution/Monitor.
formoterol and pirbuterol both decrease sedation. Use Caution/Monitor.
formoterol and pirbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - piroxicam
piroxicam increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- posaconazole
formoterol and posaconazole both increase QTc interval. Modify Therapy/Monitor Closely.
- potassium acid phosphate
potassium acid phosphate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- potassium chloride
potassium chloride increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- potassium citrate
potassium citrate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- primidone
primidone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- procarbazine
procarbazine increases effects of formoterol by pharmacodynamic synergism. Use Caution/Monitor.
- prochlorperazine
prochlorperazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- promethazine
promethazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- propranolol
propranolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
propranolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - propylhexedrine
formoterol and propylhexedrine both decrease sedation. Use Caution/Monitor.
formoterol and propylhexedrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - protriptyline
protriptyline increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- pseudoephedrine
formoterol and pseudoephedrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.
- quazepam
quazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- quetiapine
quetiapine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- quinine
formoterol and quinine both increase QTc interval. Use Caution/Monitor.
- ranolazine
formoterol and ranolazine both increase QTc interval. Modify Therapy/Monitor Closely.
- ribociclib
ribociclib increases toxicity of formoterol by QTc interval. Use Caution/Monitor.
- risperidone
formoterol and risperidone both increase QTc interval. Modify Therapy/Monitor Closely.
risperidone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. - sacubitril/valsartan
sacubitril/valsartan increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- salicylates (non-asa)
salicylates (non-asa) increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- salmeterol
formoterol and salmeterol both decrease serum potassium. Use Caution/Monitor.
formoterol and salmeterol both decrease sedation. Use Caution/Monitor.
formoterol and salmeterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - salsalate
salsalate increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- scullcap
scullcap increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- secobarbital
secobarbital increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- selpercatinib
selpercatinib increases toxicity of formoterol by QTc interval. Use Caution/Monitor.
- serdexmethylphenidate/dexmethylphenidate
formoterol and serdexmethylphenidate/dexmethylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.
- shepherd's purse
shepherd's purse increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol
formoterol and sodium sulfate/potassium sulfate/magnesium sulfate/polyethylene glycol both decrease serum potassium. Modify Therapy/Monitor Closely.
- solriamfetol
formoterol and solriamfetol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.
- sorafenib
sorafenib and formoterol both increase QTc interval. Use Caution/Monitor.
- sotalol
sotalol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
sotalol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - spironolactone
spironolactone increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- succinylcholine
succinylcholine increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- sufentanil
sufentanil increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- sulfamethoxazole
sulfamethoxazole and formoterol both increase QTc interval. Modify Therapy/Monitor Closely.
- sulfasalazine
sulfasalazine increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- sulindac
sulindac increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- tapentadol
tapentadol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- telavancin
formoterol and telavancin both increase QTc interval. Modify Therapy/Monitor Closely.
- temazepam
temazepam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- terbutaline
formoterol and terbutaline both decrease serum potassium. Use Caution/Monitor.
formoterol and terbutaline both decrease sedation. Use Caution/Monitor.
formoterol and terbutaline both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - thioridazine
thioridazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- thiothixene
thiothixene increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- timolol
timolol increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
timolol decreases effects of formoterol by pharmacodynamic antagonism. Use Caution/Monitor. - tolfenamic acid
tolfenamic acid increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- tolmetin
tolmetin increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- tolvaptan
tolvaptan increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- topiramate
topiramate increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- torsemide
formoterol and torsemide both decrease serum potassium. Use Caution/Monitor.
- tramadol
tramadol increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- trazodone
trazodone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- triamterene
triamterene increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.
- triazolam
triazolam increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- triclofos
triclofos increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- trifluoperazine
trifluoperazine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- trimethoprim
formoterol and trimethoprim both increase QTc interval. Modify Therapy/Monitor Closely.
- trimipramine
trimipramine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- triprolidine
triprolidine increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- triptorelin
triptorelin increases levels of formoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.
- tropisetron
formoterol and tropisetron both increase QTc interval. Modify Therapy/Monitor Closely.
- venlafaxine
formoterol and venlafaxine both increase QTc interval. Modify Therapy/Monitor Closely.
- voriconazole
formoterol and voriconazole both increase QTc interval. Modify Therapy/Monitor Closely.
- xylometazoline
formoterol and xylometazoline both decrease sedation. Use Caution/Monitor.
formoterol and xylometazoline both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - yohimbine
formoterol and yohimbine both decrease sedation. Use Caution/Monitor.
formoterol and yohimbine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor. - ziconotide
ziconotide increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
- ziprasidone
ziprasidone increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.
Minor (17)
- bendroflumethiazide
formoterol, bendroflumethiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- bumetanide
formoterol, bumetanide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- chloroquine
chloroquine increases toxicity of formoterol by QTc interval. Minor/Significance Unknown.
- chlorothiazide
formoterol, chlorothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- chlorthalidone
formoterol, chlorthalidone. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- cyclopenthiazide
formoterol, cyclopenthiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- ethacrynic acid
formoterol, ethacrynic acid. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- eucalyptus
eucalyptus increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Minor/Significance Unknown.
- furosemide
formoterol, furosemide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- green tea
green tea increases effects of formoterol by pharmacodynamic synergism. Minor/Significance Unknown. Due to caffeine content. Combination may increase CNS stimulatory effects due to caffeine in green tea.
- hydrochlorothiazide
formoterol, hydrochlorothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- indapamide
formoterol, indapamide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- methyclothiazide
formoterol, methyclothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- metolazone
formoterol, metolazone. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
- noni juice
noni juice increases and formoterol decreases serum potassium. Effect of interaction is not clear, use caution. Minor/Significance Unknown.
- sage
sage increases and formoterol decreases sedation. Effect of interaction is not clear, use caution. Minor/Significance Unknown.
- torsemide
formoterol, torsemide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.
Adverse Effects
>10%
Viral infection (17.2%)
1-10%
Bronchitis (4.6%)
Chest infection (2.7%)
Dyspnea (2.1%)
Chest pain (1.9%)
Tremor (1.9%)
Dizziness (1.6%)
Frequency Not Defined
Angina
Arrhythmias
Hypo/hypertension
Tachycardia
Hypokalemia
Hyperglycemia
Metabolic acidosis
Headache
Insomnia
Paradoxical bronchospasm
Severe asthma exacerbation
Postmarketing Reports
Immune system disorders: Rare reports of anaphylactic reactions, including severe hypotension and angioedema
Metabolism and nutrition disorders: Hypokalemia, hyperglycemia
Respiratory, thoracic and mediastinal disorders: Cough
Skin and subcutaneous tissue disorders: Rash
Cardiac disorders: Angina pectoris, cardiac arrhythmias (eg, atrial fibrillation, ventricular extrasystoles, tachyarrhythmia)
Investigations: Electrocardiogram QT prolonged, blood pressure increased (including hypertension)
Warnings
Contraindications
Hypersensitivity
Asthma treatment without an inhaled corticosteroid
Cautions
Coexisting conditions including cardiovascular disorders, especially coronary insufficiency, cardiac arrhythmias, hypertension, aneurysm, and pheochromocytoma
Life-threatening paradoxical bronchospasm can occur; discontinue immediately
Immediate hypersensitivity reactions may occur (eg, anaphylactic reactions, urticaria, angioedema, rash, bronchospasm)
Available data do not suggest an increased risk of death with use of LABA in patients with COPD
As with other inhaled beta2-adrenergic drugs, inhalation solution should not be used more often, at higher doses than recommended, or in conjunction with other medications containing long-acting beta2-agonists; an overdose may result; clinically significant cardiovascular effects and fatalities reported in association with excessive use of inhaled sympathomimetic drugs
Beta-agonist medications may produce significant hypokalemia in some patients, possibly through intracellular shunting, which has the potential to produce adverse cardiovascular effects; the decrease in serum potassium is usually transient, not requiring supplementation
Beta-agonist medications may produce transient hyperglycemia in some patients; clinically significant changes in serum potassium and blood glucose were infrequent during clinical studies with long-term administration of inhalation solution at recommended dose
Cardiovascular effects
- Inhalation solution, like other beta2-agonists, can produce a clinically significant cardiovascular effect in some patients as measured by increases in pulse rate, systolic and/or diastolic blood pressure, and/or symptoms; if such effects occur, inhalation solution may need to be discontinued
- Beta-agonists have been reported to produce ECG changes, such as flattening of T wave, prolongation of QTc interval, and ST segment depression; the clinical significance of these findings is unknown
- Inhalation solution, like other sympathomimetic amines, should be used with caution in patients with convulsive disorders or thyrotoxicosis, and in patients who are unusually responsive to sympathomimetic amines; doses of related beta2-agonist albuterol, when administered intravenously, have been reported to aggravate preexisting diabetes mellitus and ketoacidosis
Serious asthma related events
- Safety and efficacy in patients with asthma not established; not indicated for treatment of asthma; use of long-acting beta2-adrenergic agonists (LABA) as monotherapy [without inhaled corticosteroids (ICS)] for asthma is associated with an increased risk of asthma-related death
- LABA as monotherapy also increases risk of asthma-related hospitalization in pediatric and adolescent patients; these findings are considered a class effect of LABA monotherapy; when LABA are used in fixed-dose combination with ICS, data from large clinical trials do not show a significant increase in risk of serious asthma-related events (hospitalizations, intubations, death) compared with ICS alone
- Available data do not suggest increased risk of death with use of LABA in patients with COPD
Acute COPD episodes
- Inhalation solution should not be initiated in patients with acutely deteriorating COPD, which may be a life-threatening condition; inhalation solution has not been studied in patients with acutely deteriorating COPD; use of inhalation solution in this setting is inappropriate
- Not for use in relief of acute symptoms, ie, as rescue therapy for treatment of acute episodes of bronchospasm; inhalation solution not studied in relief of acute symptoms and extra doses should not be used for that purpose; acute symptoms should be treated with an inhaled short-acting beta2-agonist
- When beginning therapy, patients who have been taking inhaled, short-acting beta2-agonists on a regular basis (eg, four times a day) should be instructed to discontinue regular use of these drugs and use them only for symptomatic relief of acute respiratory symptoms
- When prescribing inhalation solution, healthcare provider should also prescribe an inhaled, short-acting beta2-agonist and instruct patient how it should be used; increasing inhaled beta2-agonist use is a signal of deteriorating disease for which prompt medical attention is indicated
- COPD may deteriorate acutely over a period of hours or chronically over several days or longer; if inhalation solution no longer controls symptoms of bronchoconstriction, or patient’s inhaled, short-acting beta2-agonist becomes less effective or the patient needs more inhalation of short-acting beta2-agonist than usual, these may be markers of deterioration of disease; in this setting, undertake a re-evaluation of patient and the COPD treatment regimen at once
- Increasing daily dosage of inhalation solution beyond recommended 20 mcg twice daily dose is not appropriate in this situation
Pregnancy & Lactation
Pregnancy Category: C
Lactation: not known if excreted in breast milk, use caution
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.Pharmacology
Mechanism of Action
Long-acting selective beta-2 agonist
Bronchial smooth muscle relaxation
Absorption
Peak Plasma Time: 5 min
Peak Plasma Concentration: 92 pg/mL
Distribution
Protein Bound: 61-64%
Metabolism
Metabolized by CYP2D6, CYP2C19, CYP2C9, CYP2A6
Elimination
Half-Life: 10 hr
Clearance: 150 mL/min
Excretion: Urine 66%; feces 33%
Images
| BRAND | FORM. | UNIT PRICE | PILL IMAGE |
|---|---|---|---|
| formoterol fumarate inhalation - | 20 mcg/2 mL nebulizer soln |  | |
| Perforomist inhalation - | 20 mcg/2 mL nebulizer soln |  | |
| Perforomist inhalation - | 20 mcg/2 mL nebulizer soln |  |
Copyright © 2010 First DataBank, Inc.
Patient Handout
formoterol fumarate inhalation
FORMOTEROL SOLUTION - INHALATION
(for-MOW-ter-all)
COMMON BRAND NAME(S): Perforomist
USES: Formoterol is used as a long-term (maintenance) treatment to prevent or decrease breathing problems caused by ongoing lung diseases (chronic obstructive pulmonary disease-COPD, including chronic bronchitis and emphysema). Formoterol belongs to the class of drugs known as long-acting inhaled beta-agonists (LABAs). It works by relaxing the muscles around the airways so that they open up and you can breathe more easily. This effect helps to reduce wheezing, coughing, and shortness of breath.This medication does not work right away and should not be used for sudden attacks of breathing trouble. Your doctor must prescribe a quick-relief inhaler (such as albuterol, also called salbutamol in some countries) for sudden shortness of breath while you are using formoterol. You should always have a quick-relief inhaler with you.This form of formoterol is not approved to treat asthma. People with asthma using long-acting inhaled beta agonists (such as formoterol) without also using an inhaled corticosteroid may have an increased risk of serious (sometimes fatal) breathing problems.
HOW TO USE: Read the Patient Information Leaflet provided by your pharmacist before you start using this medication and each time you get a refill. This medication is used with a special machine called a nebulizer that changes the solution to a fine mist that you inhale. Learn all instructions for the use of this medication and the nebulizer equipment. Do not use the solution if it is discolored. If you have any questions, consult your doctor or pharmacist.This medication does not require any mixing before use. Using a mouthpiece or face mask with the nebulizer, inhale the prescribed dose of medication into your lungs, usually twice daily (morning and evening) or as directed by your doctor. The two doses should be about 12 hours apart. Each treatment usually takes about 9 minutes. Give this medication only through a nebulizer. Do not swallow the solution. Do not mix with other medicines in your nebulizer.Use this medication regularly to receive the most benefit from it. To help you remember, use it at the same times each day. To prevent infections, clean the nebulizer and mouthpiece/face mask according to the manufacturer's directions.Do not use more of this medication or use it more often than prescribed because doing so may cause serious side effects. The manufacturer recommends that you do not use more than 2 vials a day.Do not stop using this medication or change your dose without consulting your doctor. Some conditions may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.If you have been using a quick-relief inhaler (such as albuterol, salbutamol) on a regular daily schedule (such as 4 times daily), your doctor will direct you to stop this schedule and use the quick-relief inhaler only as needed for sudden shortness of breath. Consult your doctor for details.Learn which of your medications/inhalers you should use every day and which you should use if your breathing suddenly worsens (quick-relief drugs). Ask your doctor ahead of time what you should do if you have new or worsening cough or shortness of breath, wheezing, increased sputum, waking up at night with trouble breathing, if you use your quick-relief inhaler more often, or if your quick-relief inhaler does not seem to be working well. Learn when you can treat sudden breathing problems by yourself and when you must get medical help right away.Tell your doctor if your symptoms do not improve or if they worsen.
SIDE EFFECTS: Shakiness (tremor), nausea, headache, nervousness, dizziness, dry mouth, or trouble sleeping 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.This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high.Tell your doctor right away if any of these unlikely but serious side effects occur: muscle weakness/cramps, increased thirst/urination.Get medical help right away if you have any very serious side effects, including: chest pain, severe dizziness, fainting, fast/irregular heartbeat.Rarely, this medication has caused severe (possibly fatal), sudden worsening of breathing problems (paradoxical bronchospasm). If you have trouble breathing or experience sudden wheezing, use your quick-relief inhaler and seek immediate medical attention.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention 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 using formoterol, tell your doctor or pharmacist if you are allergic to it; or to arformoterol; 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: diabetes, heart problems (such as irregular heartbeat, angina), high blood pressure, liver problems, overactive thyroid (hyperthyroidism), seizures, swelling of an artery (aneurysm), a certain tumor of the adrenal gland (pheochromocytoma).Formoterol 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 formoterol, 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, 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 formoterol safely.Before having surgery, tell your doctor or dentist that you are using this medication.This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above).During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is not known if this drug passes into breast milk. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: 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.Do not use other LABA drugs (such as arformoterol, salmeterol) while using this medication.
OVERDOSE: This medicine may be harmful if swallowed. 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. Symptoms of overdose may include: chest pain, fast/irregular heartbeat, severe dizziness, fainting.
NOTES: Do not share this medication with others.Laboratory and/or medical tests (such as blood pressure, heart rate, lung function) may be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.Avoid smoking and other factors that make breathing worse.Ask your doctor or pharmacist whether you should have an annual flu shot.
MISSED DOSE: If you miss a dose, skip the missed dose. Use your next dose at the regular time. Do not double the dose to catch up.
STORAGE: Store in the refrigerator between 36-46 degrees F (2-8 degrees C) in the sealed protective pouch. Protect from light and heat.Unopened pouches of medication may also be stored at room temperature between 68-77 degrees F (20-25 degrees C) for up to 3 months. Discard the medication if it is not used within 3 months or after its expiration date, whichever is sooner. Do not store in the bathroom. Keep all medicines 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 for more details about how to safely discard your product.
MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-888-633-4298 (US) or 1-800-668-1507 (Canada).
Information last revised March 2022. Copyright(c) 2022 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.
Formulary
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