Glutamine is one of the most versatile of all amino acids, and among the top aminos used by elite athletes. Among its many functions, supports protein synthesis, functions as a nitrogen precursor, supports cellular hydration, helps maintain acid balance, supports a healthy immune system, is an energy precursor and supports glycogen production in the liver.* In short, glutamine is both anabolic and anti-catabolic.* Glutamine accounts for about 60% of the body´s total intramuscular free amino-acid pool and 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.*