A research proven multi-function muscle focused supplement, Glutamine is one of the 20 amino acids and has become more prominent as new studies reveal its unique contribution to protein synthesis. It is beneficial to most athletes to take Glutamine supplementation. A research proven multi-function muscle focused supplement, Glutamine is one of the 20 amino acids and has become more prominent as new studies reveal its unique contribution to protein synthesis. It is beneficial to most athletes to take Glutamine supplementation.