Other Information: Each Tablet Contains: elemental calcium 400 mg. Do not use if printed seal under cap is torn or missing. Store at room temperature. Keep the container tightly closed. Misc: Compare to Tums Ultra Strength active ingredient (This product is not manufactured or distributed by GlaxoSmithKline, the distributor of Tums Ultra Strength). Quality guaranteed. Calcium carbonate (1000 mg). Rich in calcium Relief of: acid indigestion/heartburn. www.betterlivingbrandsLLC.com. Product of USA.