Other Information: Each pill contains: calcium 55 mg. Sodium free. Protect from moisture. Store at controlled room temperature 68-77 degrees F (20-25 degrees C). Misc: Sennosides. A natural vegetable ingredient. No mixing. No mess. Pill formula. Formulated for dependable overnight relief. The Perdiem Guarantee: When taken at bedtime, Perdiem is guaranteed to work gently, effectively or your money back. Return products to Novartis, attention Consumer Affairs, for full refund.