sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.clozapineclozapine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and clozapine both increase QTc interval. Use Caution/Monitor.codeinecodeine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.crizotinibarformoterol and crizotinib both increase QTc interval. Use Caution/Monitor.cyclizinecyclizine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.cyclopenthiazidearformoterol and cyclopenthiazide both decrease serum potassium. Use Caution/Monitor.cyproheptadinecyproheptadine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dasatinibarformoterol and dasatinib both increase QTc interval. Use Caution/Monitor.deflazacortarformoterol and deflazacort both decrease serum potassium. Use Caution/Monitor.degarelixarformoterol and degarelix both increase QTc interval. Use Caution/Monitor.desipraminedesipramine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and desipramine both increase QTc interval. Use Caution/Monitor.deutetrabenazinearformoterol 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).dexchlorpheniraminedexchlorpheniramine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dexfenfluraminearformoterol and dexfenfluramine both decrease sedation. Use Caution/Monitor.arformoterol and dexfenfluramine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dexmedetomidinedexmedetomidine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dexmethylphenidatearformoterol and dexmethylphenidate both decrease sedation. Use Caution/Monitor.arformoterol and dexmethylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dextroamphetaminearformoterol and dextroamphetamine both decrease sedation. Use Caution/Monitor.arformoterol and dextroamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dextromoramidedextromoramide increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diamorphinediamorphine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dichlorphenamidedichlorphenamide and arformoterol both decrease serum potassium. Use Caution/Monitor.dichlorphenamide, arformoterol. Either increases toxicity of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Both drugs can cause metabolic acidosis.diclofenacdiclofenac increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.diethylpropionarformoterol and diethylpropion both decrease sedation. Use Caution/Monitor.arformoterol and diethylpropion both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.difenoxin hcldifenoxin hcl increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diflunisaldiflunisal increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.digoxindigoxin increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.dimenhydrinatedimenhydrinate increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diphenhydraminediphenhydramine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diphenoxylate hcldiphenoxylate hcl increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dipipanonedipipanone increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.disopyramidearformoterol and disopyramide both increase QTc interval. Use Caution/Monitor.dobutaminearformoterol and dobutamine both decrease serum potassium. Use Caution/Monitor.arformoterol and dobutamine both decrease sedation. Use Caution/Monitor.arformoterol and dobutamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dofetilidedofetilide increases toxicity of arformoterol by QTc interval. Use Caution/Monitor.dolasetronarformoterol and dolasetron both increase QTc interval. Use Caution/Monitor.donepezildonepezil and arformoterol both increase QTc interval. Use Caution/Monitor.dopaminearformoterol and dopamine both decrease sedation. Use Caution/Monitor.arformoterol and dopamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dopexaminearformoterol and dopexamine both decrease serum potassium. Use Caution/Monitor.arformoterol and dopexamine both decrease sedation. Use Caution/Monitor.arformoterol and dopexamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.doxepindoxepin increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.doxepin and arformoterol both increase QTc interval. Use Caution/Monitor.dronedaronearformoterol and dronedarone both increase QTc interval. Use Caution/Monitor.droperidoldroperidol increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and droperidol both increase QTc interval. Use Caution/Monitor.drospirenonedrospirenone increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.efavirenzefavirenz and arformoterol both increase QTc interval. Use Caution/Monitor.eliglustatarformoterol and eliglustat both increase QTc interval. Use Caution/Monitor.encorafenibarformoterol and encorafenib both increase QTc interval. Use Caution/Monitor.entrectinibarformoterol and entrectinib both increase QTc interval. Use Caution/Monitor.ephedrinearformoterol and ephedrine both decrease serum potassium. Use Caution/Monitor.arformoterol and ephedrine both decrease sedation. Use Caution/Monitor.arformoterol and ephedrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.epinephrinearformoterol and epinephrine both decrease serum potassium. Use Caution/Monitor.arformoterol and epinephrine both decrease sedation. Use Caution/Monitor.arformoterol and epinephrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.epinephrine racemicarformoterol and epinephrine racemic both decrease serum potassium. Use Caution/Monitor.arformoterol and epinephrine racemic both decrease sedation. Use Caution/Monitor.arformoterol and epinephrine racemic both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.eribulinarformoterol and eribulin both increase QTc interval. Use Caution/Monitor.erythromycin basearformoterol and erythromycin base both increase QTc interval. Use Caution/Monitor.erythromycin ethylsuccinatearformoterol and erythromycin ethylsuccinate both increase QTc interval. Use Caution/Monitor.erythromycin lactobionatearformoterol and erythromycin lactobionate both increase QTc interval. Use Caution/Monitor.erythromycin stearatearformoterol and erythromycin stearate both increase QTc interval. Use Caution/Monitor.escitalopramescitalopram increases toxicity of arformoterol by QTc interval. Use Caution/Monitor.esmololesmolol increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.esmolol decreases effects of arformoterol by pharmacodynamic antagonism. Use Caution/Monitor.estazolamestazolam increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.ethacrynic acidarformoterol and ethacrynic acid both decrease serum potassium. Use Caution/Monitor.ethanolethanol increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.etodolacetodolac increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.fenfluraminearformoterol and fenfluramine both decrease sedation. Use Caution/Monitor.arformoterol and fenfluramine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.fenoprofenfenoprofen increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.fexinidazolearformoterol and fexinidazole both increase QTc interval. Use Caution/Monitor.fingolimodfingolimod and arformoterol both increase QTc interval. Use Caution/Monitor.flecainidearformoterol and flecainide both increase QTc interval. Use Caution/Monitor.fluconazolearformoterol and fluconazole both increase QTc interval. Use Caution/Monitor.fluoxetinearformoterol and fluoxetine both increase QTc interval. Modify Therapy/Monitor Closely.fluphenazinefluphenazine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and fluphenazine both increase QTc interval. Use Caution/Monitor.flurazepamflurazepam increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.flurbiprofenflurbiprofen increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.formoterolarformoterol 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.fostemsavirarformoterol and fostemsavir both increase QTc interval. Use Caution/Monitor. QTc prolongation reported with higher than recommended doses of fostemsavir. furosemidearformoterol and furosemide both decrease serum potassium. Use Caution/Monitor.gemifloxacinarformoterol and gemifloxacin both increase QTc interval. Use Caution/Monitor.gemtuzumabarformoterol and gemtuzumab both increase QTc interval. Use Caution/Monitor.gentamicinarformoterol and gentamicin both decrease serum potassium. Use Caution/Monitor.gilteritinibgilteritinib and arformoterol both increase QTc interval. Use Caution/Monitor.goserelingoserelin increases toxicity of arformoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.granisetronarformoterol and granisetron both increase QTc interval. Use Caution/Monitor.green teagreen tea increases effects of arformoterol by pharmacodynamic synergism. Use Caution/Monitor. Due to caffeine content. Combination may increase CNS stimulatory effects due to caffeine in green tea.haloperidolhaloperidol increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.haloperidol and arformoterol both increase QTc interval. Use Caution/Monitor.histrelinhistrelin increases toxicity of arformoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.hydrochlorothiazidearformoterol and hydrochlorothiazide both decrease serum potassium. Use Caution/Monitor.hydromorphonehydromorphone increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.hydroxyzinehydroxyzine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and hydroxyzine both increase QTc interval. Use Caution/Monitor.ibuprofenibuprofen increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ibuprofen IVibuprofen IV increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ibutilidearformoterol and ibutilide both increase QTc interval. Use Caution/Monitor.iloperidoneiloperidone increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and iloperidone both increase QTc interval. Use Caution/Monitor.imipramineimipramine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.indapamidearformoterol and indapamide both decrease serum potassium. Use Caution/Monitor.indomethacinindomethacin increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.isofluranearformoterol and isoflurane both increase QTc interval. Use Caution/Monitor.isoproterenolarformoterol and isoproterenol both decrease serum potassium. Use Caution/Monitor.arformoterol and isoproterenol both decrease sedation. Use Caution/Monitor.arformoterol and isoproterenol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.isradipinearformoterol and isradipine both increase QTc interval. Use Caution/Monitor.itraconazolearformoterol and itraconazole both increase QTc interval. Use Caution/Monitor.ketoprofenketoprofen increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ketorolacketorolac increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ketorolac intranasalketorolac intranasal increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .ketotifen, ophthalmicketotifen, ophthalmic increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.labetalollabetalol increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.labetalol decreases effects of arformoterol by pharmacodynamic antagonism. Use Caution/Monitor.lapatinibarformoterol and lapatinib both increase QTc interval. Use Caution/Monitor.lenvatinibarformoterol and lenvatinib both increase QTc interval. Use Caution/Monitor. Lenvatinib prescribing information recommends monitoring ECG closely when coadministered with QT prolonging drugs.leuprolideleuprolide increases toxicity of arformoterol by QTc interval. Use Caution/Monitor. Increases risk of torsades de pointes.levalbuterolarformoterol and levalbuterol both decrease serum potassium. Use Caution/Monitor.arformoterol and levalbuterol both decrease sedation. Use Caution/Monitor.arformoterol and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.levofloxacinarformoterol and levofloxacin both increase QTc interval. Use Caution/Monitor.levorphanollevorphanol increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lisdexamfetaminearformoterol and lisdexamfetamine both decrease sedation. Use Caution/Monitor.arformoterol and lisdexamfetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.lithiumarformoterol and lithium both increase QTc interval. Use Caution/Monitor.lofepraminelofepramine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lofexidinelofexidine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and lofexidine both increase QTc interval. Use Caution/Monitor.loperamidearformoterol and loperamide both increase QTc interval. Use Caution/Monitor.loprazolamloprazolam increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lorazepamlorazepam increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lormetazepamlormetazepam increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lornoxicamlornoxicam increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.loxapineloxapine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.loxapine inhaledloxapine inhaled increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.maprotilinemaprotiline increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and maprotiline both increase QTc interval. Use Caution/Monitor.marijuanamarijuana increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meclofenamatemeclofenamate increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.mefenamic acidmefenamic acid increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.mefloquinearformoterol and mefloquine both increase QTc interval. Use Caution/Monitor.melatoninmelatonin increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meloxicammeloxicam increases and arformoterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.meperidinemeperidine increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meprobamatemeprobamate increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.metaproterenolarformoterol and metaproterenol both decrease serum potassium. Use Caution/Monitor.arformoterol and metaproterenol both decrease sedation. Use Caution/Monitor.arformoterol and metaproterenol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.methadonemethadone increases and arformoterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.arformoterol and methadone both increase QTc interval. Use Caution/Monitor.methamphetaminearformoterol and methamphetamine both decrease sedation. Use Caution/Monitor.arformoterol and