Windmill Vitamin D-3 5000 IU Tablets. Windmill vitamin D formula provides you with 5,000 IU of cholecalciferol per caplet. Cholecalciferol, otherwise known as D3, is the substance that is formed when sunlight touches human skin. Dietary supplement Provides vitamin D-3Helps to support strong bones.No sugar, Starch, yeast, Wheat, Milk, Soy, No artificial flavors or preservatives. Please Read Item Label and Packaging for Recent Product Information. Take one tablet daily as a dietary supplement or as directed by a health care professional. Keep out of reach of children. Protect from heat, light and moisture. Store at 15 to 30 7deg;C(59 to 86°F).