Windmill Sunshine in a Caplet, Vitamin D 1,000 IU, provides you with 1,000 IU of cholecalciferol and 100 mg of vitamin C per caplet, Cholecalciferol, otherwise known as D3, is the vitamin D that is formed when the sun touches human skin, All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Processes) are independently verified by qualified certification organizations, Supports Healthy Immunity, Supports Positive Mood, Supports Breast, Colon, and Bone Health, (Note: This Product Description Is Informational Only, Always Check The Actual Product Label In Your Possession For The Most Accurate Ingredient Information Before Use, For Any Health Or Dietary Related Matter Always Consult Your Doctor Before Use, )UPC: 035046067007 K SKU: SPDSP7632