Bone Builder (Cal Apatite) with Magnesium 180 tabs by MetagenicsCal Apatite with Magnesium is the same formula as original Cal Apatite, but with the addition of 300 mg of magnesium per serving. Features 300 mg per serving of magnesium an important mineral found primarily in bone tissue and essential for musculoskeletal health. Provides a 2: 1 calcium to magnesium ratio. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any