USN 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. Restoring these amino levels will result into a new building block of new proteins to be made which will help you with recovery levels.