Coral Calcium

Coral calcium is a supplement usually derived from coral sand deposits. These sand deposits, which were once part of a coral reef, are typically collected directly from coastal land or shallow waters surrounding it
To manufacture coral calcium, the coral sand deposits are first refined to remove any pollutants or other unwanted substances, then ground into a powder. This powder is sold as-is or packaged into capsules
Coral calcium supplements are comprised largely of calcium carbonate but may also contain small amounts of magnesium and other trace minerals
Coral calcium's composition is similar to that of human bone and has been used as bone graft material for over 30 years
Nowadays, it's mostly used to prevent or treat low calcium levels among those who don't get enough of this nutrient through diet alone. Although it's said to offer many additional health benefits, most of these aren't currently supported by science

Suggested dosage:
Take 1 capsule twice per day between meals