BLACKS Surefit takes on an added dimension with the addition of wheat germ vitamin E, an antioxidant nutrient. These natural antitoxins play a crucial regulatory role by removing harmful free radicals produced under a variety of genetic, behavioral, or environmental (training, working, driving, jumping) factors. Surefit includes yeast culture at sufficient levels to increase digestion efficiency. Your horses appetite will be improved; the net result is an increase in weight with higher levels of performance.