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 USAP for assay. Misc: Smooth dissolve. Starts working in seconds. Quality Guaranteed: Compare to Tums Smoothies active ingredient (this product is not manufactured or distributed by GlaxoSmithKline. Distributor of Tums Smoothies). Gluten free. Quality guaranteed. Questions? 1-888-423-0139. www.topcarebrand.com.