Xtend is a precise, scientific blend of Energy Aminos consisting of the proven 2:1:1 ratio of Branched Chain Amino Acids (L-Leucine, L-Isoleucine and L-Valine), Glutamine, Citrulline Malate, and Vitamin B6 that will give you the energy you need to maximize your training while enhancing recovery at the same time. The advanced components in Xtend have been scientifically proven to help speed recovery and enhance ATP production and promote cell volumization. Avoid fatigue by blocking entry of fatigue-inducing tryptophan into the brain. Increase protein synthesis, immune function and digestive health. Promote vasodilation which can lead to better assimilation and absorption of protein. Elevate growth hormone levels.