Other Information: Each pill contains: calcium 50 mg. Sodium free. Store at controlled room temperature 68-77 degrees F (20-25 degrees C). Protect from moisture. Misc: Sennosides, USP, 15 mg. Guaranteed relief every time. Gentle overnight relief you can trust. The Ex-Lax Guarantee: When taken as directed, Ex-Lax is guaranteed to work gently and effectively overnight.