Description: Improves the Immune System & stronger the Bones & Teeth.Vitamin Dis a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement.Vitamin D promotes calcium absorption in the gut and maintains adequate serum calcium and phosphate concentrations to enable normal mineralization of bone and to prevent hypocalcemic tetany. It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts