Great Taste! Enhances Calcium Absorption for Stronger Bones Supports Mood and Immune Health Non GMO Verified Dietary Supplement 250 mg Maintenance Support Surpasses the Daily Value for Vitamin D Vitamin D has long been known for its important role in regulating the body's levels of calcium and phosphorus as well as increasing mineralization in the bones. Nordic Naturals Vitamin D3 is cholecalciferol, the natural, most easily absorbed and utilized form of Vitamin D. *Each serving provides 1000 I.U. of Vitamin D3 in extra virgin olive oil-with oleic acid, a "heart-healthy" monounsaturated fatty acid.