What is Vitamin D3? Vitamin D3 is needed by the body to maintain proper function of the muscles and the immune system, as well as protecting against diseases and maintaining healthy bones and teeth. Reflex Nutrition’s supplements are produced in a pharmaceutical grade environment, to ensure you get the very best from each of our capsules. Vitamin D is known as the sunshine vitamin, as unless taken through supplements, it is produced in its most concentrated form by the skin when it is exposed to sunlight. It is a fat soluble vitamin which affects up to 2,000 of the body’s cells. Who is it for? Our Vitamin D3 supplements have been formulated for both men and women who want to increase their levels of Vitamin D. Vitamin D3 supplements are often taken by athletes and sports enthusiasts to aid immune function, bone and muscle function, and calcium levels. Reflex Nutrition’s Vitamin D3 is not suitable for vegetarians. What are the benefits? Contributes to normal muscle function Aids bone health Helps maintain normal immune system function Increases absorption of calcium Vitamin D3 is of far higher quality than the widely used D2, which is proven to be of significantly less biological value. Vitamin D contributes to normal blood calcium levels and the maintenance of normal bones and muscle function, as well as contributing to the normal function of the immune system.