ATP Science L-Glutamine Did you know that Glutamine is the most abundant amino acid in your blood? It plays a critical role in protein synthesis, gut integrity, and immune function. ATP Science’s L-Glutamine supports nitrogen retention, a process that promotes muscle retention. Features Supports nitrogen retention Promotes gut health HPLC Tested Vegan-friendly Non-GMO Benefits Glutamine is considered a conditionally essential amino acid. It’s the only amino acid with 2 nitrogen molecules per amino, which offers double the value in aiding nitrogen retention. ATP Science’s L-Glutamine supports muscle retention for endurance athletes, as well as muscle-building properties for weight lifters. This supplement is also vital in supporting gut health because it helps to rebuild and repair the gut wall. Best taken before or directly after training, L-Glutamine may strengthen immunity. Circulating glutamine is an important substrate for the enterocyte, hepatocyte, and immune cells as an oxidative fuel. It is also a substrate for nucleotide synthesis. Summary Take advantage of an L-Glutamine formula that is allergen, pesticide, heavy metal and microbial tested with ATP Science’s L-Glutamine.