Glutamine is the single most abundant amino acid found naturally in muscle. Glutamine is believed to help with muscle cell volumization. L-Glutamine, the free form amino acid, is the single most abundant amino acid present in skeletal muscle. L-Glutamine may support muscle tissue by limiting the degradation of protein through nitrogen retention, glycogen synthesis, and protein synthesis.* L-Glutamine’s muscle tissue supporting qualities have made L-Glutamine an invaluable addition to an athlete’s regimen. L-Glutamine is a fundamental bodybuilders’ supplement. Don’t be without it!