The Coral Calcium 2000 formulation, by Bob Barefoot, is manufactured using "SMP 44", Marine Coral Calcium from Okinawa. This natural mineral supplement supplies natural Calcium and Magnesium plus 74 trace minerals. Added to it is Vitamin A, Vitamin C, B Vitamins plus Natural Vitamin D3. The SMP 44 Coral Calcium (Sango Mineral Powder) in our products is a rich source of trace minerals, with high absorbency and bio-availability. Sango Mineral Powder (SMP 44) provides the ratio of Calcium to Magnesium of 2:1. Each serving provides 3000 mcg of Vitamin A, 60 mg Vitamin C, 2000 IU Natural Vitamin D3, 595 mg Calcium (from 2,000 mg of Coral Calcium and Aquamin) and 299 mg of Magnesium. Bob's Best Coral Calcium 2000 has the following benefits over our Coral Calcium Supreme 100% More Coral Calcium 100% More Folic Acid 100% More Vitamin D3 100% More Magnesium 25% More of all the B Vitamins Suggested Use: As a dietary supplement, 3 caplets daily - one with every meal, three times a day.