Jul 17, 2018 FDA Pregnancy Category C - Risk cannot be ruled out. Benzoyl peroxide topical Pregnancy and Breastfeeding Warnings BPO, BPO Gel, BenzEFoam, Benzac, Benzac AC Wash, Benzagel, Benzagel-10, during Pregnancy Medicine use while Breastfeeding Safe Medications during Breastfeeding...