The Bone Density Formula is a physician formulated dietary supplement which provides calcium, magnesium and boron– all as soluble citrate compounds. Vitamin D and vitamin C have been added to the formula to maximize the absorption and utilization of the calcium and magnesium and to enhance bone density. Ingredients: vitamin C (as ascorbic acid), vitamin D (as cholecalciferol), calcium (as citrate), magnesium (as citrate), boron (as citrate)