Once again, the PhD Equine Nutritionists at Purina are on the cutting edge of equine nutrition research, developing a proprietary blend of amino acids, vitamins, and minerals proven to support muscle performance. In published scientific research, feeding Purina(R) SuperSport(TM) equine supplement resulted in significant optimization of some of the key measures that are critically important to top equine athletes. In a controlled study performed in 2011, horses fed the Purina(R) SuperSport(TM) supplement showed statistically significant improvements in muscle development, exercise recovery, and overall athletic fitness and performance when compared to horses that did not receive the supplement. | Purina Supersport Horse Supplement | Size 25 lb