Quality Choice Regular Strength Antacid Tablets are antacid calcium supplements that relieve heartburn, acid indigestion, sour stomach, and upset stomach associated with these symptoms. QC Antacid Tablets are available as 150 chewable tablets per package, in Assorted Fruit flavor. Each tablet contains 200mg of elemental calcium, and 500mg of Calcium Carbonate (Antacid), which is the active ingredient that can be compared to that of other leading brand antacids. Chew 2-4 tablets as symptoms occur, or as directed by a doctor. Use only as directed. From Quality Choice, The Brand You Trust. 100% Satisfaction Guaranteed.