Bone Health Positive Mood Healthy Immunity Great Orange Taste! Non GMO Verified Third-Party Purity Tested Dietary SupplementHealthy bones, mood, and immune system function.Surpasses the Daily Value for Vitamin DVitamin D has long been known for its important role in regulating calcium and phosphorus levels, and increasing mineralization in the bones. Nordic Naturals Vitamin D3 1000 is cholecalciferol, the natural, most easily absorbed and utilized form of vitamin D to support bone, mood, and immune health, and help regulate sleep rhythms. Each serving provides 1000 IU of vitamin D3 in organic extra virgin olive oil.