BCAAcontains 2:1:1 ratio of the free form, crystalline, essential branched chain amino acids L-Leucine, L-Isoleucine and L-Valine combined with the conditionally essential amino acid L-Glutamine plus vitamin 6|BCAAs may be used for energy production during intense exercise and support protein synthesis, particularly leucine.*Glutamine is a preferred source of fuel for the intestinal cells and is in high demand by skeletal muscles following physical exertion.* Vitamin B₆ is essential for amino acid metabolism.*. . Supports Energy Metabolism During Exercise and Protein Synthesis*