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Mecamylamine Side Effects

For the Consumer

Applies to mecamylamine: oral tablet

If you experience any of the following serious side effects, stop taking mecamylamine and seek emergency medical attention:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives); or

  • abdominal pain, abdominal distention, or diarrhea.

Other, less serious side effects may be more likely to occur. Continue to take mecamylamine and talk to your doctor if you experience

  • nausea, vomiting, or constipation;

  • dry mouth;

  • decreased appetite;

  • dizziness and fainting;

  • drowsiness or weakness;

  • dilated (large) pupils and blurred vision; or

  • difficulty urinating.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

For Healthcare Professionals

Applies to mecamylamine: oral tablet

Nervous system

Frequency not reported: Orthostatic dizziness and syncope, convulsions, choreiform movements, mental aberrations, tremor, paresthesias, sedation[Ref]

Gastrointestinal

Frequency not reported: Ileus, constipation, vomiting, nausea, glossitis, dry mouth[Ref]

Genitourinary

Frequency not reported: Urinary retention, impotence[Ref]

Ocular

Frequency not reported: Blurred vision, dilated pupils[Ref]

Other

Frequency not reported: Weakness, fatigue[Ref]

Respiratory

Frequency not reported: Interstitial pulmonary edema and fibrosis[Ref]

Cardiovascular

Frequency not reported: Postural hypotension[Ref]

Metabolic

Frequency not reported: Anorexia[Ref]

Psychiatric

Frequency not reported: Decreased libido[Ref]

References

1. "Product Information. Inversine (mecamylamine)." Merc & Co Inc, West Point, PA.

Not all side effects for mecamylamine may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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