Use Caution/Monitor.levalbuterol and phentermine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.phenylephrinelevalbuterol and phenylephrine both decrease sedation. Use Caution/Monitor.levalbuterol and phenylephrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.phenylephrine POlevalbuterol and phenylephrine PO both decrease sedation. Use Caution/Monitor.levalbuterol and phenylephrine PO both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.pholcodinepholcodine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.pimozidepimozide increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.pindololpindolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.pindolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.pirbuterollevalbuterol and pirbuterol both decrease serum potassium. Use Caution/Monitor.levalbuterol and pirbuterol both decrease sedation. Use Caution/Monitor.levalbuterol and pirbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.piroxicampiroxicam increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.potassium acid phosphatepotassium acid phosphate increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.potassium chloridepotassium chloride increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.potassium citratepotassium citrate increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.primidoneprimidone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.procarbazineprocarbazine increases effects of levalbuterol by pharmacodynamic synergism. Use Caution/Monitor.prochlorperazineprochlorperazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.promethazinepromethazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.propranololpropranolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.propranolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.propylhexedrinelevalbuterol and propylhexedrine both decrease sedation. Use Caution/Monitor.levalbuterol and propylhexedrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.protriptylineprotriptyline increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.pseudoephedrinelevalbuterol and pseudoephedrine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.quazepamquazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.quetiapinequetiapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.risperidonerisperidone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.sacubitril/valsartansacubitril/valsartan increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.salicylates (non-asa)salicylates (non-asa) increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.salmeterollevalbuterol and salmeterol both decrease serum potassium. Use Caution/Monitor.levalbuterol and salmeterol both decrease sedation. Use Caution/Monitor.levalbuterol and salmeterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.salsalatesalsalate increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.saquinavirlevalbuterol, saquinavir. Either increases toxicity of the other by QTc interval. Use Caution/Monitor. Increased risk of hypokalemia, QT prolongation, and cardiac arrhythmias.scullcapscullcap increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.secobarbitalsecobarbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.serdexmethylphenidate/dexmethylphenidatelevalbuterol and serdexmethylphenidate/dexmethylphenidate both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.shepherd's purseshepherd's purse increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.sodium sulfate/potassium chloride/magnesium sulfate/polyethylene glycollevalbuterol and sodium sulfate/potassium chloride/magnesium sulfate/polyethylene glycol both decrease serum potassium. Modify Therapy/Monitor Closely.solriamfetollevalbuterol and solriamfetol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.sotalolsotalol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.sotalol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.spironolactonespironolactone increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.succinylcholinesuccinylcholine increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.sufentanilsufentanil increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.sulfasalazinesulfasalazine increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.sulindacsulindac increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.tapentadoltapentadol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.temazepamtemazepam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.terbutalinelevalbuterol and terbutaline both decrease serum potassium. Use Caution/Monitor.levalbuterol and terbutaline both decrease sedation. Use Caution/Monitor.levalbuterol and terbutaline both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.thioridazinethioridazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.thiothixenethiothixene increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.timololtimolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.timolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor.tolfenamic acidtolfenamic acid increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.tolmetintolmetin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.tolvaptantolvaptan increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.topiramatetopiramate increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.torsemidelevalbuterol and torsemide both decrease serum potassium. Use Caution/Monitor.tramadoltramadol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.trazodonetrazodone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.triamterenetriamterene increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.triazolamtriazolam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.triclofostriclofos increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.trifluoperazinetrifluoperazine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.trimipraminetrimipramine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.triprolidinetriprolidine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.valbenazinevalbenazine and levalbuterol both increase QTc interval. Use Caution/Monitor.xylometazolinelevalbuterol and xylometazoline both decrease sedation. Use Caution/Monitor.levalbuterol and xylometazoline both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.yohimbinelevalbuterol and yohimbine both decrease sedation. Use Caution/Monitor.levalbuterol and yohimbine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.ziconotideziconotide increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.ziprasidoneziprasidone increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Minor (15)bendroflumethiazidelevalbuterol, bendroflumethiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.bumetanidelevalbuterol, bumetanide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.chlorothiazidelevalbuterol, chlorothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.chlorthalidonelevalbuterol, chlorthalidone. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.cyclopenthiazidelevalbuterol, cyclopenthiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.ethacrynic acidlevalbuterol, ethacrynic acid. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.eucalyptuseucalyptus increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Minor/Significance Unknown.furosemidelevalbuterol, furosemide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.hydrochlorothiazidelevalbuterol, hydrochlorothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.indapamidelevalbuterol, indapamide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.methyclothiazidelevalbuterol, methyclothiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.metolazonelevalbuterol, metolazone. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.noni juicenoni juice increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Minor/Significance Unknown.sagesage increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Minor/Significance Unknown.torsemidelevalbuterol, torsemide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.acebutololMonitor Closely (2)acebutolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor. acebutolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.aceclofenacMonitor Closely (1)aceclofenac increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.acemetacinMonitor Closely (1)acemetacin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.albuterolMonitor Closely (3)albuterol and levalbuterol both decrease serum potassium. Use Caution/Monitor. albuterol and levalbuterol both decrease sedation. Use Caution/Monitor. albuterol and levalbuterol both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.alfentanilMonitor Closely (1)alfentanil increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.alfuzosinMonitor Closely (1)alfuzosin and levalbuterol both increase QTc interval. Use Caution/Monitor.alprazolamMonitor Closely (1)alprazolam increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.amilorideMonitor Closely (1)amiloride increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Modify Therapy/Monitor Closely.amisulprideSerious - Use Alternative (1)amisulpride and levalbuterol both increase QTc interval. Avoid or Use Alternate Drug. ECG monitoring is recommended if coadministered.amitriptylineMonitor Closely (1)amitriptyline increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amitriptyline, levalbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.amobarbitalMonitor Closely (1)amobarbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.amoxapineMonitor Closely (1)amoxapine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.Serious - Use Alternative (1)amoxapine, levalbuterol. Other (see comment). Avoid or Use Alternate Drug. Comment: Tricyclic antidepressants increase or decrease effects of sympathomimetics, by blocking reuptake of NE, or blocking uptake of indirect sympathomimetics into the adrenergic neuron.apomorphineMonitor Closely (1)apomorphine and levalbuterol both increase QTc interval. Use Caution/Monitor.arformoterolMonitor Closely (3)arformoterol 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.aripiprazoleMonitor Closely (2)aripiprazole increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. aripiprazole and levalbuterol both increase QTc interval. Use Caution/Monitor.armodafinilMonitor Closely (1)levalbuterol and armodafinil both decrease sedation. Use Caution/Monitor.artemetherMonitor Closely (1)artemether and levalbuterol both increase QTc interval. Use Caution/Monitor.artemether/lumefantrineMonitor Closely (1)artemether/lumefantrine and levalbuterol both increase QTc interval. Use Caution/Monitor.aspirinMonitor Closely (1)aspirin increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.aspirin rectalMonitor Closely (1)aspirin rectal increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor. .aspirin/citric acid/sodium bicarbonateMonitor Closely (1)aspirin/citric acid/sodium bicarbonate increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.atenololMonitor Closely (2)atenolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor. atenolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.atomoxetineMonitor Closely (2)levalbuterol, 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 levalbuterol both increase QTc interval. Use Caution/Monitor.azelastineMonitor Closely (1)azelastine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.bedaquilineMonitor Closely (1)bedaquiline and levalbuterol both increase QTc interval. Use Caution/Monitor.belladonna and opiumMonitor Closely (1)belladonna and opium increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.bendroflumethiazideMonitor Closely (1)levalbuterol and bendroflumethiazide both decrease serum potassium. Use Caution/Monitor.Minor (1)levalbuterol, bendroflumethiazide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.benperidolMonitor Closely (1)benperidol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.benzphetamineMonitor Closely (2)levalbuterol and benzphetamine both decrease sedation. Use Caution/Monitor. levalbuterol and benzphetamine both increase sympathetic (adrenergic) effects, including increased blood pressure and heart rate. Use Caution/Monitor.betaxololMonitor Closely (2)betaxolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor. betaxolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.bisoprololMonitor Closely (2)bisoprolol decreases effects of levalbuterol by pharmacodynamic antagonism. Use Caution/Monitor. bisoprolol increases and levalbuterol decreases serum potassium. Effect of interaction is not clear, use caution. Use Caution/Monitor.brompheniramineMonitor Closely (1)brompheniramine increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.bumetanideMonitor Closely (1)levalbuterol and bumetanide both decrease serum potassium. Use Caution/Monitor.Minor (1)levalbuterol, bumetanide. Mechanism: pharmacodynamic synergism. Minor/Significance Unknown. Hypokalemia.buprenorphine buccalMonitor Closely (1)buprenorphine buccal increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.butabarbitalMonitor Closely (1)butabarbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.butalbitalMonitor Closely (1)butalbital increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.butorphanolMonitor Closely (1)butorphanol increases and levalbuterol decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor.caffeineMonitor Closely (1)levalbuterol