Summary

More frequently reported side effects include: tremor. Continue reading for a comprehensive list of adverse effects.

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

• Fast, pounding, or irregular heartbeat or pulse

Less common

• Shakiness in the legs, arms, hands, or feet
• trembling or shaking of the hands or feet
• worsening of asthma

Rare

• Blurred vision
• chest pain
• chills
• cough
• diarrhea
• dizziness
• fainting
• fever
• general feeling of discomfort or illness
• headache
• increased sweating
• joint pain
• loss of appetite
• muscle aches and pains
• nausea
• nervousness
• pounding in the ears
• puffiness of the face and fingers
• runny nose
• shivering
• slow or fast heartbeat
• sore throat
• sweating
• swelling
• trouble sleeping
• unusual tiredness or weakness
• vomiting

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

Symptoms of overdose

• Arm, back, or jaw pain
• chest discomfort
• chest tightness or heaviness
• confusion
• dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• dry mouth
• general feeling of discomfort or illness
• shortness of breath
• sleeplessness
• unable to sleep

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

• Abdominal or stomach pain

Rare

• Bad, unusual, or unpleasant (after) taste
• change in appetite
• drowsiness
• dry mouth or throat
• itching skin
• pain
• raised red swellings on the skin, lips, tongue, or in the throat
• tightening of the muscles
• weakness

For Healthcare Professionals

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

Cardiovascular

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

Common (1% to 10%): Palpitations

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

Musculoskeletal

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]

Psychiatric

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

Common (1% to 10%): Insomnia

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

Respiratory

Common (1% to 10%): Asthma exacerbation

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

Gastrointestinal

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

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

Other

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]

Dermatologic

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

Ocular

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

Metabolic

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