Cal Apatite Bone Builder Vegetarian features a ratio-balanced blend of calcium and magnesium to support bone density and muscle health.Magnesium works together with calcium to support bone health and muscle relaxation. Directions: Take one tablet twice daily or as directed by your healthcare practitioner. Caution: Keep out of the reach of children. Storage: Keep tightly closed in a cool, dry place. This product is Gluten Free and Vegetarian. Serving Size: 1 Tablet. Servings Per Container: 270.