In A League Of It's Own Two years in the making this powerful formula brings together all of the critical nutrients required for complete bone health. Leveraging superior forms of calcium (Citrate & Microcrystalline Hydroxyapatite) coupled with essential co-factors, Magnesium, Zinc, Vitamin C, K2, D3, Potassium, Copper, Boron & Manganese, this calcium complex is perfect for the prevention & treatment of Osteoporosis, stress fractures, broken bones, post-operative procedures, and pregnancy support / fetal development. A Key Ingredient Bone Support features 500mg of calcium from MCHA (microcrystalline calcium hydroxyapatite), this ingredient alone is a complete bone matrix; containing proteins, glycosaminoglycans, calcium and other minerals in the ratio that naturally occurs within bones themselves. Hydroxyapatite is what gives bones and teeth their strength and has been clinically proven to be highly bioavailable and gentle on the stomach.