Famotidine 10 mg/calcium carbonate 800 mg. Magnesium hydroxide 165 mg tablets. Just one tablet relieves heartburn due to acid indigestion. Tips for Managing Heartburn: Do not lie flat or bend over after eating; Do not wear tight-fitting clothing around the stomach; Do not eat before bedtime; Raise the head of your bed; Avoid heartburn causing foods such as rich, spicy, fatty or fried foods, chocolate, caffeine, alcohol, and certain fruits and vegetables; Eat slowly and avoid big meals; If overweight, lose weight; Quit smoking. Each tablet contains: calcium (320 mg); magnesium (65 mg).