Mesna Pregnancy and Breastfeeding Warnings

Brand names: Mesnex

Medically reviewed by Drugs.com. Last updated on Jan 22, 2024.

Mesna Pregnancy Warnings

Reproduction studies in animals at oral doses approximately 10 times the maximum recommended total daily human dose on a body surface area basis revealed no evidence of harm to the fetus. There are no controlled data in human pregnancy.

AU TGA pregnancy category B1: Drugs which have been taken by only a limited number of pregnant women and women of childbearing age, without an increase in the frequency of malformation or other direct or indirect harmful effects on the human fetus having been observed. Studies in animals have not shown evidence of an increased occurrence of fetal damage.

US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D and X are being phased out.

Benefit should outweigh risk.

AU TGA pregnancy category: B1
US FDA pregnancy category: Not assigned.

Risk Summary: This drug is used in combination with ifosfamide or other cytotoxic agents. Ifosfamide can cause fetal harm when administered to a pregnant woman. Refer to the ifosfamide prescribing information for more information on use during pregnancy.

Comments:
-This drug contains the preservative benzyl alcohol; because benzyl alcohol is rapidly metabolized by a pregnant woman, benzyl alcohol exposure in the fetus is unlikely.

See references

Mesna 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: Unknown
Excreted into animal milk: Data not available

Comment:
-Benzyl alcohol present in maternal serum is likely to cross into human milk and may be orally absorbed by a nursing infant.

See references

Further information

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

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