Vitacost Vitamin D3 (as Cholecalciferol) - 4000 IU - 300 Capsules

What is vitamin D?Vitamin D is a fat-soluble vitamin that is naturally present in very few food sources. Its functions in the body are wide ranging, from contributing to bone health to supporting immune function.Vitamin D3 (cholecalciferol) is the same form of vitamin D that the body manufactures when skin is exposed to ultraviolet (UV) radiation from the sun. Vitamin D3 may be more than three times as effective in raising concentrations of vitamin D in the bloodstream and maintaining those levels for a longer time.*How does vitamin D support health?Contributes to bone strength as proper levels create optimum conditions for bone formation.*Supports proper functioning of the immune and nervous systems.*Promotes the intestinal absorption of calcium.*Supports fetal skeletal development and tooth enamel formation.*Contributes to healthy levels of phosphorus in the body.*Why choose Vitacost Vitamin D3?Is the preferred form of vitamin D, identical to the type manufactured by the body when sk