L-glutamine is indeed not an essential amino acid because the body can synthesis it, but it is popular fields of sport and weight training to avoid the threat of muscle catabolism post workout. Among other things, L-glutamine is used to provide energy for all of your cells. It regulates the stability of acids and bases in the body and thus keeps proteins active. Due to its multitude of positive benefits, scientists have started to use L-glutamine in treatments of illnesses such as cancer and Crohn’s. It can efficiently and effectively alleviate symptoms and lead to a faster recovery.