Bone Density is a comprehensive formula containing 1,000 mg of calcium from hydroxyapatite, calcium, citrate / malate and calcium carbonate, plus specific vitamins and minerals. The hydroxyapatite used in this formula is obtained from raw bone matrix. Hydroxyapatite is an effective form of calcium for for bone support. Suggested Use Adults take two (2) tablets twice (2) daily. For best utilization take with food. Ingredients Serving Size 2 Tablet Amount per Serving Vitamin C (as ascorbic acid) 50 mg, Vitamin D (as cholcalciferol) 100 IU, Vitamin B-6 (as pyridoxine HCl) 5 mg, Folic Acid 200 mcg, Calcium (as microcrystalline hydroxyapatite, calcium carbonate, calcium citrate, calcium malate) 400 mg, Phosphorus (as microcrystalline hydroxyapatite) 141 mg, Magnesium (as magnesium aspartate) 75 mg, Copper (as copper amino acid chelate) 0.25 mg, Manganese (as manganese amino acid chelate) 10 mg, Molybdenum (as molybdenum amino acid chelate) 125 mcg, Potassium (as potassium aspartate) 49.5 mg, Microcrystalline Hydroxyapatite 1.2 g, Proteoglycans (as chondroitin sulfate) 100 mg, Betaine (from 50 mg of betaine HCl) 38 mg, Proline (as microcrystalline hydroxyapatite) 37 mg, Silica (as silica amino acid chelate) 12.5 mg, Boron (as boron amino acid chelate) 0.75 mg, Vanadium (as vanadium amino acid chelate) 100 mcg