Acetaminophen, butalbital, and caffeine are excreted into human milk in small concentrations. The significance of the effects on nursing infants has not been reported, but due to the potential for serious adverse reactions in nursing infants, other agents may be preferred.
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: Yes (acetaminophen); Yes (barbiturates); Yes (caffeine)