Cal Apatite® 1000 provides advanced, bioactive support for healthy bone mineralization with micro-crystalline hydroxyapatite concentrate (MCHC) a calcium-rich, bone-derived supplement that provides a broad spectrum of macro- and trace minerals, Type 1 collagen protein, the intact portion of bone, and bioactive bone growth factors. Cal Apatite 1000 features an exclusive, freeze-dried, purity-certified MCHC that ensures higher levels of intact bone growth factors than other MCHC formulas. This unique formula features 1000 mg of calcium in just three tablets daily.