Other Information: Each tablet contains: Calcium 320 mg and magnesium 2 mg; store at 68-77 degrees F (20-25 degrees C). Keep the container tightly closed; does not meet USP for assay. Misc: Smooth dissolve. Relieves heartburn and acid indigestion. Compare to Tums Smoothies Extra Strength 750 active ingredient (This product is not manufactured or distributed by GlaxoSmithKline LLC, owner of the registered trademark Tums). Contact us at 1-877-932-7948, or www.supervalu-ourownbrands.com.