Ortho.Bone is a multi-nutrient combination designed to support bone health. It features ossein microcrystalline hydroxyapatite complex (MCHC), a lyophilized extract of bovine bone, which retains the intact microcrystalline structure of whole bone. The MCHC in Ortho.Bone is derived from Australian pasture-fed, free-range livestock not subjected to routine antibiotics or rBGH. Guaranteed free of bovine spongiform encephalopathy.