<p>This is combination of Calcium (Algae Source) &amp; Vitamin D3. Calcium (Algae Source) is an essential element and plays vital role in the body. It makes body&#39;s framework stronger by building bones. Clinical evidence suggests that calcium is useful for prevention and treatment of osteoporosis and associated fractures. Vitamin D3 is also essential for healthy bones as it aids in calcium absorption from the Gl tract. In addition to this it stimulates bone formation. Controlled clinical studies show that Calcium and Vitamin D3 have synergistic effects on bone growth as well as in osteoporosis and fracture prevention.</p>