Before you begin treating your acne with Duac topical gel, talk to your doctor about:, Your allergies, Your medications, including other topical medications, Your health conditions, Your breastfeeding or pregnancy status, Duac Gel can cause colitis that may be severe or fatal. Contact your doctor immediately if you develop diarrhea, bloody diarrhea, or any other effects., Duac Gel can make you more sensitive to ultraviolet light from the sun, tanning beds, and sun lamps. Avoid prolonged sun exposure after applying the gel. Use sunscreen and wear protective clothing when going out in the sun. Your allergies, Your medications, including other topical medications, Your health conditions, Your breastfeeding or pregnancy status
