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Metaproterenol Side Effects

Medically reviewed by Last updated on Feb 26, 2024.

Applies to metaproterenol: oral syrup, oral tablet.

Serious side effects of Metaproterenol

Along with its needed effects, metaproterenol may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking metaproterenol:

More common

Less common


Get emergency help immediately if any of the following symptoms of overdose occur while taking metaproterenol:

Symptoms of overdose

Other side effects of Metaproterenol

Some side effects of metaproterenol may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common


For Healthcare Professionals

Applies to metaproterenol: compounding powder, inhalation aerosol, inhalation aerosol with adapter, inhalation solution, oral syrup, oral tablet.


Very common (10% or more): Tachycardia (17.1%)

Common (1% to 10%): Palpitations

Rare (less than 0.1%): Hypertension, chest pain[Ref]


Very common (10% or more): Tremor (16.9%)

Uncommon (0.1% to 1%): Spasms, chills[Ref]

Nervous system

Common (1% to 10%): Headache, dizziness,

Uncommon (0.1% to 1%): Syncope, clonus noted on flexing foot[Ref]


Very common (10% or more): Nervousness (20.2%)

Common (1% to 10%): Insomnia

Uncommon (0.1% to 1%): Chatty[Ref]


Common (1% to 10%): Asthma exacerbation

Uncommon (0.1% to 1%): Coughing[Ref]


Common (1% to 10%): Nausea, gastrointestinal distress, diarrhea

Uncommon (0.1% to 1%): Vomiting, dry mouth/throat, laryngeal changes[Ref]


Common (1% to 10%): Fatigue

Uncommon (0.1% to 1%): Edema, sensory disturbances, weakness, pain, bad taste, feverish, flu symptoms, facial and finger puffiness[Ref]


Uncommon (0.1% to 1%): Pruritus, diaphoresis, hives[Ref]


Uncommon (0.1% to 1%): Blurred vision[Ref]


Uncommon (0.1% to 1%): Appetite changes[Ref]


1. Product Information. Metaproterenol Sulfate (metaproterenol). Par Pharmaceutical Inc. 2022.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.