Effect of interaction is not clear, use caution. Use Caution/Monitor.diethylpropionlevalbuterol and diethylpropion both decrease sedation. Use Caution/Monitor.levalbuterol and diethylpropion both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.difenoxin hcldifenoxin hcl increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diflunisaldiflunisal increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.digoxindigoxin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.dimenhydrinatedimenhydrinate increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diphenhydraminediphenhydramine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.diphenoxylate hcldiphenoxylate hcl increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dipipanonedipipanone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.dobutaminedobutamine and levalbuterol both decrease serum potassium. Use Caution/Monitor.dobutamine and levalbuterol both decrease sedation. Use Caution/Monitor.dobutamine and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dolasetrondolasetron and levalbuterol both increase QTc interval. Use Caution/Monitor.donepezildonepezil and levalbuterol both increase QTc interval. Use Caution/Monitor.dopaminelevalbuterol and dopamine both decrease sedation. Use Caution/Monitor.levalbuterol and dopamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dopexaminedopexamine and levalbuterol both decrease serum potassium. Use Caution/Monitor.dopexamine and levalbuterol both decrease sedation. Use Caution/Monitor.dopexamine and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.dopexamine, levalbuterol. Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor.doxepindoxepin increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.doxepin and levalbuterol both increase QTc interval. Use Caution/Monitor.droperidoldroperidol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.drospirenonedrospirenone increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.efavirenzefavirenz and levalbuterol both increase QTc interval. Use Caution/Monitor.encorafenibencorafenib and levalbuterol both increase QTc interval. Use Caution/Monitor.entrectinibentrectinib and levalbuterol both increase QTc interval. Use Caution/Monitor.ephedrineephedrine and levalbuterol both decrease serum potassium. Use Caution/Monitor.ephedrine and levalbuterol both decrease sedation. Use Caution/Monitor.ephedrine and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.epinephrineepinephrine and levalbuterol both decrease serum potassium. Use Caution/Monitor.epinephrine and levalbuterol both decrease sedation. Use Caution/Monitor.epinephrine and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.epinephrine racemiclevalbuterol and epinephrine racemic both decrease serum potassium. Use Caution/Monitor.levalbuterol and epinephrine racemic both decrease sedation. Use Caution/Monitor.levalbuterol and epinephrine racemic both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.eribulineribulin and levalbuterol both increase QTc interval. Use Caution/Monitor.esmololesmolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.esmolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.estazolamestazolam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.ethacrynic acidlevalbuterol and ethacrynic acid both decrease serum potassium. Use Caution/Monitor.ethanolethanol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.etodolacetodolac increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.fenfluraminelevalbuterol and fenfluramine both decrease sedation. Use Caution/Monitor.levalbuterol and fenfluramine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.fenoprofenfenoprofen increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.fingolimodfingolimod and levalbuterol both increase QTc interval. Use Caution/Monitor.fluoxetinefluoxetine and levalbuterol 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 systemfluphenazinefluphenazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.flurazepamflurazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.flurbiprofenflurbiprofen increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.formoterolformoterol 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.fostemsavirlevalbuterol and fostemsavir both increase QTc interval. Use Caution/Monitor. QTc prolongation reported with higher than recommended doses of fostemsavir. furosemidelevalbuterol and furosemide both decrease serum potassium. Use Caution/Monitor.gemifloxacingemifloxacin and levalbuterol both increase QTc interval. Use Caution/Monitor.gentamicinlevalbuterol and gentamicin both decrease serum potassium. Use Caution/Monitor.gilteritinibgilteritinib and levalbuterol both increase QTc interval. Use Caution/Monitor.green teagreen tea increases effects of levalbuterol 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 levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.hydrochlorothiazidelevalbuterol and hydrochlorothiazide both decrease serum potassium. Use Caution/Monitor.hydromorphonehydromorphone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.hydroxyzinehydroxyzine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.ibuprofenibuprofen increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ibuprofen IVibuprofen IV increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.iloperidoneiloperidone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.imipramineimipramine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.indapamidelevalbuterol and indapamide both decrease serum potassium. Use Caution/Monitor.indomethacinindomethacin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.isoproterenolisoproterenol and levalbuterol both decrease serum potassium. Use Caution/Monitor.isoproterenol and levalbuterol both decrease sedation. Use Caution/Monitor.isoproterenol and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.ketoprofenketoprofen increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ketorolacketorolac increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.ketorolac intranasalketorolac intranasal increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .ketotifen, ophthalmicketotifen, ophthalmic increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.labetalollabetalol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.labetalol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.levorphanollevorphanol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lisdexamfetaminelevalbuterol and lisdexamfetamine both decrease sedation. Use Caution/Monitor.levalbuterol and lisdexamfetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.lofepraminelofepramine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lofexidinelofexidine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.loprazolamloprazolam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lorazepamlorazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lormetazepamlormetazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.lornoxicamlornoxicam increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.loxapineloxapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.loxapine inhaledloxapine inhaled increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.maprotilinemaprotiline increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.marijuanamarijuana increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meclofenamatemeclofenamate increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.mefenamic acidmefenamic acid increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.melatoninmelatonin increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meloxicammeloxicam increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.meperidinemeperidine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.meprobamatemeprobamate increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.metaproterenollevalbuterol and metaproterenol both decrease serum potassium. Use Caution/Monitor.levalbuterol and metaproterenol both decrease sedation. Use Caution/Monitor.levalbuterol and metaproterenol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.methadonemethadone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.methamphetaminelevalbuterol and methamphetamine both decrease sedation. Use Caution/Monitor.levalbuterol and methamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.methyclothiazidelevalbuterol and methyclothiazide both decrease serum potassium. Use Caution/Monitor.methylenedioxymethamphetaminelevalbuterol and methylenedioxymethamphetamine both decrease sedation. Use Caution/Monitor.levalbuterol and methylenedioxymethamphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.methylphenidatelevalbuterol and methylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.metolazonelevalbuterol and metolazone both decrease serum potassium. Use Caution/Monitor.metoprololmetoprolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.metoprolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.midazolammidazolam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.midodrinelevalbuterol and midodrine both decrease sedation. Use Caution/Monitor.levalbuterol and midodrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.mirtazapinemirtazapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.modafinillevalbuterol and modafinil both decrease sedation. Use Caution/Monitor.morphinemorphine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.motherwortmotherwort increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.moxonidinemoxonidine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.nabilonenabilone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.nabumetonenabumetone increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.nadololnadolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.nadolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.nalbuphinenalbuphine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.naproxennaproxen increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.nebivololnebivolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.nebivolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.norepinephrinelevalbuterol and norepinephrine both decrease serum potassium. Use Caution/Monitor.levalbuterol and norepinephrine both decrease sedation. Use Caution/Monitor.levalbuterol and norepinephrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.nortriptylinenortriptyline increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.olanzapineolanzapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.olodaterol inhaledlevalbuterol 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 effectsopium tinctureopium tincture increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.osilodrostatosilodrostat and levalbuterol both increase QTc interval. Use Caution/Monitor.oxaprozinoxaprozin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.oxazepamoxazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.oxycodoneoxycodone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.oxymorphoneoxymorphone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.paliperidonepaliperidone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.papaveretumpapaveretum increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.parecoxibparecoxib increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.penbutololpenbutolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.penbutolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.pentazocinepentazocine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.pentobarbitalpentobarbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.perphenazineperphenazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.phendimetrazinelevalbuterol and phendimetrazine both decrease sedation. Use Caution/Monitor.levalbuterol and phendimetrazine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.phenobarbitalphenobarbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.phenoxybenzaminephenoxybenzamine, levalbuterol. Mechanism: pharmacodynamic synergism. Use Caution/Monitor. Hypotension, tachycardia.phenterminelevalbuterol and phentermine both decrease sedation.