Yes, the Performance Range has a higher cost per serve because it's built to replace everything else. Your current daily supp stack of 10+ supplements Iron, L Glutamine, Creatine, Protein, L Carnitine, Zinc, Perspectives approaches using dietary glutamine and L carnitine toward enhancement of reproductive performance of breeding pigeons and coordination of Genes controlling nutrients transport, lipogenesis and myogenesis in hatched squabs ScienceDirect Boost Vitality with the Best L Glutamine Supplements Glutamine 60 servings Unflavored