Vitamin D3 1000 IU Aids in the development and maintenance of bones and teethimmune system function Vitamin D is made naturally in the skin from exposure to the sun’s ultraviolet rays. Vitamin D is a nutrient in the development and maintenance of bones and teeth and assists the body in absorbing calcium and phosphorus. Natural Factors Vitamin D3 provides the natural form of vitamin D that is essential for the absorption of calcium and phosphorus. These minerals are needed for successful bone mineralization and maintenance, as well as muscle function and proper nerve transmission. Each dose delivers 1000 IU of vitamin D3 so that sufficient levels can be maintained conveniently when exposure to the sun’s ultraviolet rays is low. Vitamin D3 1000 IU is suitable for vegetarians and contains no artificial colours, preservatives, sweeteners, or common allergens, making it a safe product. This product contains no GMOs and is a key factor in the maintenance of good health.