Is it safe to take valium while breastfeeding?

Can affect baby: Most medications have the ability to be passed via breastmilk and you should really think about this and only take meds that are absolutely necessary. If you feel that you must take this med regularly you should contemplate stopping breastfeeding.

Valium: Diazepam & its metabolite (nordiazepam) are excreted into breast milk & can build up in the infant's blood with repeated doses. Both have long half –lives, so trying to time breastfeeding is of limited value. This is especially a concern with preterm infants or newborns. It is best to find a different medication. REF: https://www.drugs.com/breastfeeding/diazepam.html