Summary:

Couch grass may have diuretic properties due to the presence of carbohydrates like mannitol and inulin. It has been used for urinary tract infections and kidney condicitons (like kidney stones). The essential oil is used for its antimicrobial effects, while the extracts of couch grass have been used as a dietary component for patients with diabetes. However, there is no research available on the effectiveness of the herb.

Uses:

There are no scientific studies on the use of couch grass for medical conditions.

Safety:

Patients should avoid couch grass if they have a known allergy/hypersensitivity to any constituent of couch grass, or to other members of the Poaceae/Gramineae family. Inulin may cause. Avoid xcessive use of couch grass. Avoid with edema caused by heart or kidney disease. Couch grass should be taken with plenty of fluids to flush out the urinary tract. Avoid if pregnant or breastfeeding.

Possible side effects:

Atopic dermatitis, difficulty breathing, hypokalemia (low level of potassium in the blood), throat swelling, nasal itching, couching.

Possible interactions:

Drugs for high blood pressure, diuretics (drugs that increase urination), and herbs or supplements with similar effects.

Dosing:

Adults (18 years and older):

	Dried rhizome: 4-8 grams or in decoction three times daily has been used.
	Liquid extract (1:1 in 25% alcohol): 4-8mL three times daily has been used.
	Tincture (1:5 in 40% alcohol): 5-15mL three times daily has been used.

Children (younger than 18 years):

Not enough scientific data available.