L-Glutamine is the L form of the conditionally essential amino acid Glutamine. It is synthesised from glutamic acid and ammonia. It is the principal carrier of nitrogen in the body and is an important energy source for many cells.  It is the most abundant amino acid in the human body, as it makes up approximately 60 percent of skeletal muscle and plays an important role in Protein synthesis, the function of the immune system, and gut health.  Muscle tissue is a major site of Glutamine production, where it forms the anabolic precursor for muscle growth.

*Amino acids can occur in L and D forms, but only L Amino Acids are manufactured in cells and incorporated into proteins.