Olympian Labs uses coral from the Sango reefs around Okinawa, Japan. The action of the tides and waves causes coral to break off and reside on the bottom of the ocean. Once there, the sand-like granules are saturated with the ocean's valuable minerals. The granules are then carefully mined, pulverized and processed into capsules. Coral Calcium is an all natural product that may help detoxify the body by balancing the body's pH. Plant enzymes are also added for increased bioavailability.