Famotidine 10 mg - acid reducer. Calcium carbonate 800 mg - antacid. Magensium hydroxide 165 mg - antacid. Just one tablet! Relives heartburn due to acid indigestion. Heartburn relief on the go. Individually wrapped tablets perfect for. Questions or comments? Call 1-800-755-4008 (toll-free) or 215-273-8755 (collect). Other information: Each tablet contains: calcium 320 mg, magnesium 70 mg. Read the directions and warnings before use. Read the bottle. It contains important information. Store at 20-25 degrees C (68-77 degrees F). Protect from moisture. Do not use if foil inner seal imprinted with Sealed For Your Safety is broken or missing.