Glutamine is an important amino acid with many functions in the body. It is a building block of protein and critical part of the immune system. What's more, glutamine has a special role in intestinal health. Your body naturally produces this amino acid, and it is also found in many foods.
Glutamine has several functions including the support of immunity, gastrointestinal integrity, insulin secretion, neurological activity, and muscle protein synthesis. Glutamine actually supplies 35% of nitrogen to muscle to synthesise proteins.