Glutamine is an amino acid (the building blocks of protein), and also has a crucial role in the immune system. Glutamine is an energy source of for the cells in the gut, and since the gut is a huge contributor to the functioning of the immune system, fuels our immune system too. Glutamine also helps to maintain the barrier between the gut and the rest of the body. This prevents toxins and harmful bacteria from moving outside of the gut. Glutamine has been shown to be effective in treating symptoms of irritable bowel syndrome. Recommended as a supplement to support gut health, muscle recovery and immunity.