Help control your diarrhea symptoms with Imodium A-D Caplets. From the #1 doctor-recommended anti-diarrheal brand, Imodium A-D works faster than the prescription anti-diarrheal medication Lomotil, containing diphenoxylate and atropine. Each caplet of anti-diarrheal medicine contains 2 mg of loperamide hydrochloride with a proven formula that works with your body to slow down your system and restore its natural rhythm and balance.