Reformulated to include 1,500 IU of Vitamin E per dose! Super Weight Gain is actually three supplements in one easy dose that will make a huge difference in your horse. First, it features full-energy, full-fat soybeans that we extrude onsite for weight gain and coat condition. Then, we add both a complete pro & prebiotic supplement to get the digestion going again. Finally, we add the vitamin-mineral package of Horse Guard for overall health.