Methenamine

Chemical formula: C₆H₁₂N₄  Molecular mass: 140.186 g/mol  PubChem compound: 4101

Pregnancy

There is inadequate evidence of safety of methenamine hippuratein human pregnancy, but it has been in wide use for many years without apparent ill consequence. Animal studies are insufficient with respect to reproductive toxicity. As a precautionary measure, it is preferable to avoid the use of methenamine hippurate during pregnancy.

Nursing mothers

Methenamine is excreted in breast milk but the quantities will be insignificant to the infant. Mothers can therefore breast feed their infants.

Carcinogenesis, mutagenesis and fertility

There are no human data available on fertility. Data from studies in rats do not indicate any effects on female fertility, effects on male fertility have not been adequately tested.

Effects on ability to drive and use machines

None.

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