Pure Encapsulations L-Glutamine Powder 227gL Glutamine Powder l Glutamine is the most abundant amino acid in the body. In times of stress or increased metabolic demand, glutamine is utilized by the body for gastrointestinal tract maintenance, tissue repair in the preservation of muscle tissue, and immune system function. Glutamine is an especially important source of energy for the G. I. tract. In the gut, glutamine plays a large role in maintaining healthy intestinal integrity by enhancing