Naked Glutamine is the highest grade, fastest dissolving, and rapidly absorbed glutamine available. Glutamine is the most common amino acid found in your muscles and during intense training, glutamine stores are drastically depleted. Studies have shown that supplementation can minimize muscle breakdown and improve protein metabolism.* Naked Glutamine is free of any artificial additives. Don’t let the supplement industry fool you; additives are for their bottom line, not your health. Independent third-party tested for heavy metals.