Glutamine is the most common amino acid in the human body. It takes part in a number of important processes in the organism.  Glutamine is produced in the muscles and is distributed by the blood to the organs that need it. Glutamine stimulates the gut function, the immune system, and other essential processes in the body, especially in times of stress. It is also important for providing "fuel"  to many different cells in the body. One of the most important benefits of glutamine is its ability to stimulate protein synthesis. By doing this, it prevents the muscles from being catabolized in order to provide Glutamine for other cells in the body.