Glutamine is one of the most versatile of all amino acids, & among the top aminos used by elite athletes. Among its many functions, supports protein synthesis & protein degradation, functions as a nitrogen precursor & transfer, supports cellular hydration, supports growth hormone production, maintains acid balance, supports the immune system, is an energy precursor & supports glycogen production in the liver. In short, glutamine is both anabolic & anti-catabolic. Glutamine accounts for about 60% of the body´s total intramuscular free amino-acid pool & 20% of the total circulating amino acids. Unlike almost all other aminos, glutamine contains two nitrogen atoms. Because of this additional nitrogen atom, glutamine is called a nitrogen shuttle. Glutamine transports nitrogen where the body needs it most.* Glutamine is available in both powder & capsule forms.