Working on the basis that a supplement is only as good as its ability to interact properly with human biology, Swanson introduces Boneology, the latest addition to our inventory of bioavailable calcium supplements. Boneology delivers pure, calcium in the precise form found in your bones. Boneology provides biological calcium from microcrystalline hydroxyapatite (MCHA). As a component of the matrix within our bones and teeth, MCHA helps provide rigidity and strength. It's recognized as one of the most bioactive forms of supplemental calcium.