Glutamine is an amino acid (a building block for proteins), found naturally in the body.
Glutamine is used to counter some of the side effects of medical treatments. For example, it is used for side effects of cancerchemotherapy including diarrhea, pain and swelling inside the mouth (mucositis), nerve pain (neuropathy), and muscle and joint pains caused by the cancer drug Taxol. Glutamine is also used to protect the immune system and digestive system in people undergoing radiochemotherapy forcancer of the esophagus. Additionally, glutamine is used for improving recovery afterbone marrow transplant or bowel surgery, increasing well-being in people who have suffered traumatic injuries, and preventing infections in critically ill people.
Some people use glutamine for digestive system conditions such as stomachulcers, ulcerative colitis, and Crohn's disease. It is also used for depression, moodiness, irritability, anxiety, insomnia, and enhancing exercise performance.