It is estimated that 80% of the immune system resides in the gastrointestinal tract. The gut is critical as an essential barrier to the external environment. This barrier is not only physical but involves a complex intestinal bacterial system that helps maintain a healthy gut. Without a healthy gastrointestinal tract, it is impossible for the immune system to function properly and effectively. Nutraceuticals developed and formulated by ImmuBiome provide a synergistic combination of bioactive compounds which include medicinal mushrooms, probiotics, colostrum and nucleotides which can significantly improve the equine immune system and overall health and performance.