As an essential part of our diet, Calcium plays many important roles in normal body functions. It is required for strong bones and teeth, regulating muscle contractions and nerve impulses as well as activating cellular enzymes. Magnesium acts alongside Calcium in our muscles while Vitamin D helps absorption and Zinc helps to boost our immune systems. Calcium, Magnesium, Zinc and Vitamin D are safe and effective choices for a supplement. As a factor in the maintenance of good health, Calcium, Magnesium and Zinc are traditionally used to help in the development and maintenance of bones and teeth. Calcium intake when combined with sufficient Magnesium, Zinc, Vitamin D and other co-factors, may reduce the risk of developing osteoporosis.