Jamieson Vitamin D 1,000 IU is formulated to help you meet your needs for this essential nutrient. It is made with premium-grade Vitamin D3 (cholecalciferol), the same form that is naturally produced in the body when the skin is exposed to sunlight. It also more readily absorbed by the body than Vitamin D2. Vitamin D, often referred to as the “sunshine vitamin," is a fat-soluble vitamin that it is also considered to be a hormone. Vitamin D is well known for the important role it plays in helping the body to absorb calcium as well as maintaining strong bones to prevent osteoporosis. New studies show that Vitamin D may also be effective in helping reduce the risk of certain cancers. Many researchers now advise increasing daily Vitamin D intake to 1,000 IU. Jamieson Vitamin D 1,000 IU is formulated with bioavailable Vitamin D3 to help you meet your needs for this essential nutrient.