Calten D-500 Tablet has a balanced mix of calcium carbonate and vitamin D3. Calcium plays a very important role in the body. It is necessary to normalise nerves, cells, muscle, and bone. If there is insufficient calcium in the blood, the body will take calcium from bones, weakening bones. Thus intake of calcium is necessary to keep the bones strong. Vitamin D helps the body absorb calcium and phosphorus. The right amounts of vitamin D, calcium, and phosphorus are important for building and keeping strong bones. It is beneficial for pregnant women after 12 weeks of pregnancy for bone formation and development of the baby. It is also used in osteoporosis and postmenopausal phase osteoporosis.