Calcium Magnesium with Vitamin D maintains strong bones and teeth and helps prevent osteoporosis to reduce the risk of fractures later in life. This product may help reduce high blood pressure and plays a role in relieving symptoms of PMS. It also helps prevent insomnia, supports colon health and is good for adolescents and post-menopausal women. Calcium Magnesium with Vitamin D aids nerve and muscle function, including the conduction of nerve impulses and the regulation of a normal heart rhythm. Together, magnesium and calcium support mutual absorption and utilization. The optimal two-to-one ratio of calcium to magnesium ensures maximum calcium absorption and it prevents adverse gastrointestinal effects that can occur when the two minerals are combined. Calcium Magnesium with Vitamin D is formulated with premium-grade, bioavailable Vitamin D3, the natural form synthesized by the body when skin is exposed to sunlight.