From the manufacturer's website:
Good Sense Calcium Antacid 500 mg Tablets, Regular Strength, Peppermint flavor relieves: heartburn; sour stomach; acid indigestion; upset stomach associated with these symptoms. As a daily source of calcium. Compare to the active ingredient of Tums Extra Strength 750.
Warning: See attached picture.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.