PhD Nutrition Glutamine is a high quality, 100% micronized grade L-Glutamine supplement. It has been designed to help with anyone into training. Glutamine is an essential amino acid. It is also required by our muscles. It is one of the most vital building blocks in forming proteins. This can help with repair of muscle tissue and protein synthesis. Glutamine is produced in the muscles. Once produced it is distributed by the blood to the organs that need it. It can help with preventing muscles from being broken down. Glutamine is found in many forms of protein. Mostly in Whey Protein and Casein. Supplementing glutamine as a post workout can help restore amino levels that are diminished during training.