AONE NUTRITION - GLUTAMINE PEPTIDES 500 CAPSULESGlutamine Peptides are capsules with a peptide form of L glutamine. Short peptides are able to pass directly from the digestive tract into the blood and effectively increase the amino acid supply. In contrast, L glutamine in free amino acid form only passes into the blood to a small extent, as it is consumed by intestinal cells for their own nutrition. L glutamine is the most abundant amino acid in muscles and plays a key role in nitrogen balance.