Is it safe to take mebendazole while pregnant or breastfeeding?

Probably Safe. Mebendazole is used to treat intestinal parasites such as pinworms, roundworms, hookworms, and whipworms. It can be used, if needed, during pregnancy - and has not been shown to cause harm to a human fetus. However, there are no studies in pregnant humans to determine the precise risks. It is recommended to discontinue breastfeeding while taking this medication to avoid exposure for your baby.
See below. Mebendazole is compatible with breast feeding, however, safety of Mebendazole use during pregnancy has to be proved.