Calcium and Vitamin D aid in the formation and maintenance of strong bones. Adequate calcium and Vitamin D intake throughout life as part of a well-balanced diet are essential factors that may lower the risk of osteoporosis. Schiff Super Calcium Magnesium with Vitamin D contains 800 IU of Vitamin D per serving, which helps to develop strong bones and teeth, decrease bone loss, and enhance calcium absorption. Magnesium aids the body's utilization of calcium and is required for the creation of cellular energy. Boron is also beneficial to bone health.