The minerals in Calcium Magnesium with D3 from Webber Naturals are chelated, making them more readily absorbed and utilized by the body. This supplement not only helps in the development and maintenance of healthy teeth and bones, it also helps the body metabolize carbohydrates, proteins, and fats. Medicinal ingredients Each Caplet Contains: Elemental Calcium (carbonate, citrate, fumarate, malate, succinate)    333 mg Elemental Magnesium (oxide, citrate, fumarate, malate, succinate)    167 mg Vitamin D3 (cholecalciferol)    5 mcg (200 IU)