L-glutamine serves as a secondary fuel source for cellular energy. It is believed that by supplementing the body’s natural reserves of L-glutamine, many biological functions can be enhanced. L-glutamine is also used by athletes and bodybuilders to build muscle mass and speed exercise recovery. By infusing L-glutamine, many people experience a multitude of benefits including the treatment of anxiety, bipolar disorder, Crohn’s disease, depression, epilepsy, insomnia, irritable bowel syndrome, obesity, peptic ulcers, schizophrenia, and ulcerative colitis. A number of studies have suggested that L-glutamine may be useful in alleviating some of the dermatological side effects of cancer therapy.