What is it? Many Vitamin E supplements use the much cheaper synthetic forms of Vitamin E. Natural E, as the name suggests, provides a natural source of Vitamin E which has up to double the biological activity than synthetic forms of Vitamin E. Natural E also contains organic selenium which is essential for the optimal activity of Vitamin E. Natural E delivers 3000IU of Vitamin E activity and 1mg of selenium per daily horse feeding rate. Vitamin E is a powerful antioxidant vitamin that cannot be made by the horse and must be obtained from the diet. Vitamin E is essential for healthy functioning of muscles, the immune system, reproductive function, skin and the nervous system. Many horses may have an increased need for Vitamin E, including those on low Vitamin E intake due to low quality forage, those on diets with added oil, those in work, "older" animals and those used for breeding. FAQandrsquo;s Where do horses get Vitamin E from? Horses cannot make Vitamin E and must get it from their diet. It is therefore essential that sufficient Vitamin E is fed or supplemented. What form of Vitamin E is best - Natural or Synthetic? Many Vitamin E supplements use the much cheaper synthetic forms of Vitamin E. Natural E, as the name suggests provides a natural source of Vitamin E which has up to double the biological activity than synthetic forms of Vitamin E. Natural E also contains organic selenium which is essential for the optimal activity of Vitamin E. Vitamin E in different horse feed materials Vitamin E is higher in fresh forage than in preserved forages. Vitamin E levels in commercial dry horse feeds are naturally very low due to processing and so Vitamin E must be supplemented. As Vitamin E is a relatively expensive feed ingredient the levels added may be on the low side....