Calcium is an essential element and plays vital roles in the body. It helps body framework stronger by building bone. Clinical evidence suggests that calcium is useful for prevention and treatment of osteoporosis and associated fractures. Vitamin-D is also essential for healthy bones as it aids in calcium absorption from the GI tract. In addition to this it stimulates bone formation. Controlled clinical studies shows that calcium and vitamin-D has synergistic effects on bone growth as well as in osteoporosis and fracture prevention.