Animal studies have failed to reveal evidence of direct or indirect effects on pregnancy, embryofetal development, parturition, or postnatal development. There are no controlled data in human pregnancy.

This drug should not be used during pregnancy unless the benefit outweighs the risk to the fetus.

US FDA pregnancy category: Not formally assigned to a pregnancy category.

See references

This drug should not be used unless there are no safer alternatives.

Excreted into human milk: Yes

-This drug has been used without apparent harmful effects in the nursing infant.
-The WHO considers aluminum hydroxide compatible with breastfeeding.
-Some authorities recommend monitoring breastfed infants for adverse effects.

See references