Vitamin D contains 5,000 IU of vitamin D3 per tablet. Vitamin D, also known as the “sunshine vitamin” is an essential vitamin that plays many important roles in the proper functioning of the human body. Though classified as a vitamin, vitamin D is actually a key regulatory hormone for calcium and bone metabolism. Adequate vitamin D status is essential for ensuring normal calcium absorption and maintenance of healthy plasma calcium levels. Besides bone support, vitamin D has many other roles in the body, including modulation of cell growth, cognitive function, and neuromuscular and immune function. The addition of biotin among other ingredients may assist in healthy skin, nail, and hair care. Energy and mood may also be positively affected.* As a dietary supplement, adults take 6 tablets daily with food or as directed by your health professional. This product is best taken with meals. These multivitamins are for adult men and women. Package contains 30 servings (180 count total). Dr. Sandi's Multivitamins are made in America at Nirvana Acupuncture and Medical Center and manufactured by Douglas Laboratories. Dedicated to proper health care, Dr. Sandi has been an international, national, and Florida state certified and licensed medical practitioner since 2004. *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.