Drugs A - Z

Couch grass (Agropyron repens, Elymus repens)

Generic Name: Couch grass

Category

Herbs & Supplements

Synonyms

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.

Background

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).

Evidence

DISCLAIMER: 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.

Tradition

WARNING: DISCLAIMER: The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.
Anti-inflammatory, benign prostatic hypertrophy (BPH, enlarged prostate), bladder inflammation, bronchitis, chronic skin disorders, colds, constipation, cough, cystitis, demulcent (locally soothing agent), diabetes, diuretic, emollient (softens skin), expectorant (induces coughing), fever, flavoring, gallbladder stones, gout (foot inflammation), increased sweating, irrigation therapy, kidney disorders, kidney stones, laxative, liver disorders, inflammation (oral), prostatitis (enlarged prostate), rheumatic pain, tonic, urethritis (painful urination), urinary disorders, urinary tract infection (UTI).

Dosing

Adults (18 years and older):

There is no proven safe or effective dose for couch grass in adults. Traditionally, 4-8 grams of dried rhizome has been taken three times daily. As a liquid (1:1 in 25% alcohol) extract, 4-8 milliliters three times per day has been used. As a tincture (1:5 in 40% alcohol), 5-15 milliliters three times per day has been used.

Children (younger than 18 years):

There is no proven safe or effective dose for couch grass in children.

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