Calcium microcrystalline hydroxyapatite contains a mixture of bone minerals in their natural ratios, as well as residues of matrix, proteins, and glycosaminoglycans. Magnesium, like calcium, is an essential bone matrix mineral that promotes healthy bone metabolism. Supplementation with calcium and magnesium provides synergistic support for bone health. Magnesium also supports cardiovascular health by helping to maintain healthy levels of cellular and plasma electrolytes, including calcium and potassium. Additionally, calcium and magnesium may help to promote healthy lipid metabolism. This formula provides a 2:1 ratio of calcium to magnesium.