Couch grass is stated to possess diuretic properties due to the presence of carbohydrates such as mannitol and inulin. It has been traditionally used for urinary tract infections and conditions relating to the kidneys, such as kidney stones. The essential oil has been used for its antimicrobial effects, while the extracts of couch grass have been used as a dietary component in patients with diabetes. There is no formal clinical data available, however, to support these claims. Literature on couch grass is primarily in journals on botany and genomics.
Couch grass is listed by the Council of Europe as a natural source of food flavoring. In the United States, it is listed as GRAS (Generally Recognized as Safe).
Agropyron cristatum L., Agropyron desertorum, Agropyron elongatum, Agropyron intermedium, Agropyron mongolicum, Agropyron pectiniforme, Agropyron repens L. Beauv., Agropyron scabrifolium El Palmar INTA, Agropyron scabrifolium Seleccion Anguil, Agropyron smithii, Agropyron trachycaulum, Agropyron trichophorum, ayrik, chiendent, common couch, creeping quackgrass, crested wheatgrass, cutch, devil's grass, dog grass, durfa grass, echte quecke, Elymus repens, Elytrigia repens, grama, grama de las boticas, grama del norte, gramigna, gramigua, groesrod graminis rhizome, joula, kweek, najm, nejil, pied de poule, quackgrass, quick grass, quitch grass, Scotch quelch, Scotch grass, squaw wein, squaw wijn, triticum, Triticum repens L., twitch, twitchgrass, vigne squaw, wheat grass, witch grass.
These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.