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Vecamyl Side Effects

Generic Name: mecamylamine

Note: This document contains side effect information about mecamylamine. Some of the dosage forms listed on this page may not apply to the brand name Vecamyl.

For the Consumer

Applies to mecamylamine: oral tablet

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child's doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Blurred eyesight.
  • Lowered interest in sex.
  • Not able to get or keep an erection.
  • Very bad dizziness or passing out.
  • Mood changes.
  • Mouth or tongue irritation.
  • Loose stools that happen often.
  • Swelling of belly.
  • Very hard stools (constipation).
  • Very bad belly pain.
  • Shortness of breath.
  • Trouble passing urine.
  • Stiff muscles, shakiness, or muscle movements that are not normal.
  • Seizures.
  • A burning, numbness, or tingling feeling that is not normal.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Hard stools (constipation).
  • Dizziness.
  • Feeling sleepy.
  • Dry mouth.
  • Not hungry.
  • Upset stomach or throwing up.
  • Feeling tired or weak.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

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.

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.

More about Vecamyl (mecamylamine)

Consumer resources

Other brands: Inversine

Professional resources

Related treatment guides

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