Cal Apatite with Magnesium , Metagenics Complete Bone Nutrition, Purity-Certified MCHC with Magnesium Cal Apatite with Magnesium is the same formula as original Cal Apatite®, but with the addition of 300 mg of magnesium per serving. Magnesium plays important roles in bone metabolism, with over one-half of the total body stores of magnesium found in bone tissue. Provides a 2:1 calcium to magnesium ratio. Magnesium is provided as a blend of glycinate, citrate, and aspartate designed for enhanced absorption. Does not contain magnesium oxide. Recommendations: One to six tablets daily.  Supplement Facts   Container Size 180 Tabs   Serving Size 3 Tabs   Amount Per 3 Tabs Content %DV     Microcrystalline Hydroxyptite Concentrate (MCHC)† 1500 MG   Calcium (as MCHC and dicalcium phosphate) 600 MG   Phosphorus (as MCHC and dicalcium phosphate) 378 MG   Magnesium (as magnesium citrate, aspartate, and bis-glycinate††) 300 MG     † Microcrystalline hydroxyapatite concentrate supplies calcium, phosphorus, and trace quantities of other minerals. †† As MetaMag™, our proprietary fully reacted magnesium amino acid chelate: Albion®.   % Daily Values (DV) are based on a 2,000 calorie diet. * Daily Value (DV) not established. Product: Cal Apatite with Magnesium Manufacturer: Metagenics Item #: CA024180 Content: 180 Tabs