Provides calcium and vitamin D needed for the maintenance of normal bone, teeth and muscle function. Supplementing with calcium and vitamin D may help reduce the risk or bone fractures and the risk or progression of osteoporosis. Women of menopausal age are recommended to take a calcium and vitamin D supplement for bone health. Calcium also supports energy metabolism and the actions of digestive enzymes. Calcium supplementation is also recommended for both elderly men and women to help support efficient absorption of nutrients from the diet in later years. Vitamin D, included as a synergistic nutrient, helps to maintain normal blood calcium levels to reduce loss of bone material and also helps to support immune function.