Glutamine is one of the 20 fundamental amino acids involved in protein synthesis, and it is also the most abundant, forming approximately one-fifth of the amino acid pool circulating in the human bloodstream. It is classified as "non-essential" because it can be synthesized from another amino acid, namely glutamic acid. The significance of glutamine, however, cannot be overstated, as it is critical for a wide variety of essential functions, including: optimal operation of the kidneys, pancreas, gall bladder, liver, the small and large intestines, and the brain. Furthermore, it is a precursor for what is arguably the body's most powerful endogenous anti-oxidant, glutathione;
Maintaining Nitrogen Balance
Glutamine is also the most important of all amino acids in maintaining nitrogen balance within the body, accounting for a full one-third of all amino acid nitrogen transported in the human bloodstream.
Cellular growth & differentiation