• Okinawa, Japan source Coral Calcium. • Low molecular weight calcium, such as calcium carbonate from coral, may potentially be absorbed intact or ionized by stomach acids. Nonosseous ionized calcium affects membrane permeability and enzyme regulation. Calcium also plays a role in cellular processes. • Calcium provides nutritive support for normal, healthy bones and teeth, proper nerve impulse transmission and muscle contraction. • Coral calcium is from coral grains. Coral grains are grains of the skeletal structure of reef-building coral that has become defunct. The method by which they are obtained does not destroy living coral reefs. Ingredients of Coral Cal Mag Supplement Facts Serving Size: 3 Tablet Ingredients Amount Per Serving Total Carbohydrate <1 g Dietary Fiber <1 g Vitamin D (as Ergocalciferol) (D-2) 400 iu 100% Calcium (as Coral Calcium) 600 mg 60% Magnesium (as Coral Calcium, Magnesium Glycinate, Magnesium Oxide) 300 mg 75% Other Ingredients: Cellulose, Stearic Acid and Silica Suggested Use for Coral Cal Mag As a dietary supplement, take 3 tablets daily with a meal or a glass of water.