Coral Calcium Description Nature's Way Coral Calcium is gathered from fossilized Okinawan sources pushed above sea level thousands of years ago - not dredged from the ocean floor. Coral Calcium is rich in organic calcium with a diversity of 72 trace minerals Usage Calcium is important for proper bone development and muscle function. It regulates heart rhythm; activates enzyme systems including blood clotting. It is also essential for nerve/muscle innervation, regulates blood pH, and operates the calcium channel pump by which important bio-molecules are transported into the cell.* Recommended Daily Dosage Take 3 capsules twice daily, preferrably with food. The following list is for serving size of 3 vegetarian capsules Primary Ingredients Amount USRDA Boron, amino acid chelate 1.5 mg 0% Calcium (as coral calcium) 600 mg 0% Magnesium (as citrate/oxide) 300 mg 0% Vitamin C (ascorbic acid) 30 mg 0% Vitamin D (as ergocalciferol) 200 IU 0% Vitamin K, phytonadione 40 mcg 0%