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Mecamylamine Pregnancy and Breastfeeding Warnings

Medically reviewed by Last updated on Nov 24, 2022.

Mecamylamine is also known as: Inversine, Vecamyl

Mecamylamine Pregnancy Warnings

Animal studies have not been reported. There are no controlled data in human pregnancy.

US FDA pregnancy category C: Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.

This drug should be used during pregnancy only if clearly needed.

US FDA pregnancy category: C

See references

Mecamylamine Breastfeeding Warnings

A decision should be made to discontinue breastfeeding or discontinue the drug, taking into account the importance of the drug to the mother.

Excreted into human milk: Data not available
Excreted into animal milk: Data not available

Comments: The effects in the nursing infant are unknown.

See references

References for pregnancy information

  1. "Product Information. Inversine (mecamylamine)." Merck & Co., Inc (2001):

References for breastfeeding information

  1. "Product Information. Inversine (mecamylamine)." Merck & Co., Inc (2001):

Further information

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