TMG PRO Glutamine is the α-amino acid(a building Block for Proteins) used in the biosynthesis of proteins. TMG PRO Glutamine is considered a “ Conditionally Essential “ Amino acid. Glutamine is the most abundant naturally occurring, non-essential amino acid in the human body that comprises 60% of the amino acid pool. Besides aiding muscle growth and maintaining a healthy immune system, L-Glutamine is a cell volumizer, meaning that it helps muscles hold water, which is also necessary for growth and repair. L-Glutamine supplementation promotes a positive nitrogen balance and prevents the loss of muscle.