Yamamoto Nutrition Glutamine PEPTIDE is a dietary supplement of glutamine in peptide form, suitable for sportsmen and women who take part in strenuous physical activity. The glutamine/peptide bond means that it is linked to another amino acid, making the compound much more stable. Studies have shown that this peptide form makes the glutamine 10 times more effective than the simple form. More specifically: It is absorbed rapidly It not is used and degraded by the gut and the liver as quickly as free glutamine