Glutamine peptides are a form of hydrolyzed wheat gluten containing up to 95% of proteins, including gliadin (40-50%) and glutelin (35-45%) for increasing the digestibility. They are the source of non essential amino acids (glutamic acid and glutamine), with the catabolic potential, and with neuromodulating properties and other complementary amino acids - cystine and phenylalanine (approx. 5%), lysine and methionine (below 1%). Available in mono-preparation supplements and as a component of anti-catabolic supplements and protein and carbohydrate- protein supplements, available at www.muscle-zone.pl. They does not meet big interest, because of the low solubility and unpleasant taste.