Glutamine is an unnecessary amino acid that is synthesized by the body and is involved in the process of protein synthesis. Glutamine production is regulated by skeletal muscle, lungs and liver.

Glutamine is involved in maintaining a positive nitrogen balance, ideal for those involved in increasing muscle mass. More specifically, glutamine helps transport nitrogen to muscle cells, which equates to anabolic muscle growth.

Also, glutamine strengthens the rapidly growing cells or the so-called lymphocytes of the immune system, which help the body to defend itself against those who are recognized as foreign invaders, as is the case with germs.

In addition, glutamine maintains the body's acid-base balance, ie maintaining a stable internal environment in a body in terms of pH, in cases of disturbance by external factors.

In the brain, glutamine is converted to glutamic acid, which is essential for brain function. It also increases the amount of γ-aminobutyric acid (GABA), which is necessary for maintaining normal brain function and mental activity.

Glutamine is also known for its ability to maintain a healthy digestive system. Glutamine supplementation is associated with the proper functioning and maintenance of intestinal absorption cells (enterocytes), maintaining the structural integrity of the epithelial structures of the intestinal mucosa as well as cell differentiation.