Pregnancy: Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. Studies in animals have shown reproductive toxicity. The potential risk for humans is unknown. Cilostazol should not be used during pregnancy.
Lactation: Transfer of cilostazol into milk has been reported in experimental animals (rats). Because of the potential risk to nursing infants, a decision should be made to discontinue breastfeeding or to discontinue cilostazol.