In Each Tablet Other Information: Each tablet contains: elemental calcium 300 mg. Do not use if printed seal under cap is torn or missing. Store at room temperature. Keep the container tightly closed. Compare to Tums Extra Strength 750 active ingredients (This product is not manufactured or distributed by GlaxoSmithKline LLC, owner of the registered trademark Tums). Calcium carbonate 750 mg. Relieves heartburn and acid indigestion. supervaluprivatebrands.com.