Nature's Plus Vitamin D (400 IU) Bottle of 90 Water-dispersible Vitamin D has known beneficial effects on mineral absorption and bone mineralization. Though sunlight triggers the body's natural Vitamin D "factory," many health professionals have urged people to avoid excessive exposure to the sun. The easily digested dry form of high potency Vitamin D from Nature's Plus supplements the limited dietary sources of this important nutrient. Vitamin D intake has been linked to development and maintenance of strong bones.