Couch Grass
Important Disclaimer
This is not medical advice. Consult a qualified healthcare provider before using any remedy, especially if pregnant, breastfeeding, on medication, or managing a health condition.
Overview
Couch grass is a common perennial grass found throughout temperate regions worldwide, often considered a garden weed. Its long white underground rhizomes have been used medicinally for centuries as a gentle diuretic and urinary tract tonic. Despite its reputation as a troublesome weed, couch grass has significant medicinal value for urinary tract infections, kidney stones, cystitis, and bladder inflammation. Dogs and cats instinctively seek out couch grass when unwell, which is why it is also called "dog grass."
Traditional Use
Couch grass has been used medicinally since ancient times. Dioscorides and Pliny the Elder both mentioned it as a remedy for urinary complaints. In European folk medicine, couch grass rhizome tea was a standard remedy for urinary tract infections, kidney stones, and bladder inflammation. Traditional herbalists used it as a gentle diuretic to flush the urinary system without irritating the kidneys. In Ayurvedic medicine, a related species was used for similar urinary complaints. The plant's demulcent properties soothe irritated urinary tract mucous membranes.
Key Active Compounds
Triticin
A polysaccharide (fructan) that acts as a prebiotic and contributes to the plant's demulcent, soothing properties in the urinary tract.
Mannitol
A sugar alcohol with mild diuretic properties that helps increase urine flow and flush the urinary tract.
Volatile Oils (Agropyrene)
Antimicrobial compounds that help combat bacterial infections in the urinary tract.
Mucilage
Soothing polysaccharides that coat and protect irritated mucous membranes in the urinary tract and digestive system.
Evidence-Based Benefits
Urinary tract support
Traditional useCouch grass is a well-established traditional remedy for UTIs, cystitis, urethritis, and bladder inflammation. Its diuretic and antimicrobial properties help flush bacteria and soothe irritated tissues.
Kidney stone prevention
Traditional useThe diuretic action of couch grass increases urine flow, which may help prevent kidney stone formation and assist in passing small stones by keeping the urinary tract well-flushed.
Prostate support
Traditional useTraditional herbalists have used couch grass for benign prostatic hyperplasia (BPH) to reduce urinary frequency and improve urine flow, though clinical evidence is limited.
Digestive soothing
Traditional useThe mucilaginous properties of couch grass rhizome soothe irritated digestive mucous membranes, providing relief from gastritis and intestinal inflammation.
Common Preparation Methods
Root Decoction
Simmer 1-2 teaspoons of dried couch grass rhizome in 2 cups of water for 15-20 minutes. Strain and drink warm.
Dosage: 3 cups dailyDrink plenty of additional water throughout the day to support the diuretic effect.
Cold Infusion
Soak 2 tablespoons of dried rhizome in 1 liter of cold water overnight. Strain and drink throughout the day.
Dosage: 1 liter dailyCold infusion preserves more of the mucilaginous compounds.
Tincture
Use a 1:5 tincture in 25% alcohol. Take 5-10 ml three times daily in water.
Dosage: 5-10 ml, 3 times dailyCombine with uva ursi or marshmallow root for enhanced UTI support.
Safety & Cautions
Please read carefully before use
Contraindications
- Kidney disease: consult healthcare provider before use
- Edema from heart or kidney failure: avoid diuretics without medical supervision
- Pregnancy: avoid medicinal doses
Drug Interactions
- Diuretic medications: additive effects
- Lithium: diuretics may increase lithium levels
- Antihypertensives: may enhance blood pressure-lowering effects
Possible Side Effects
- Generally well-tolerated
- Rare: mild digestive upset
- Excessive use may cause electrolyte imbalance
Special Populations
- Pregnancy: avoid medicinal doses
- Kidney disease: use only under medical supervision
- Elderly: monitor for dehydration and electrolyte balance
Sources & References
Journal of Ethnopharmacology
Phytotherapy Research
European Medicines Agency
Quick Reference
Poaceae
Rhizome (underground stem), Young shoots
Mild, slightly sweet, grassy
Safety First
Always consult with a qualified healthcare provider before starting any new remedy, especially if you have existing health conditions or take medications.