Couch grass, the weed that's actually good for you

Couch grass (Elymus repens) is a perennial plant in the Poaceae family, just like wheat, barley, and corn. It is commonly found in meadows, gardens, and along roadsides, where its long, creeping rhizomes often make it an unwanted weed for gardeners.

Yet, behind its seemingly ordinary appearance, couch grass possesses an interesting botanical and biochemical richness. Its rhizomes, the underground part of the plant, have been used since ancient times for their diuretic, purifying, and soothing properties. Their composition includes mucilages, polysaccharides, mannitol, and triticine—compounds that explain its traditional uses and documented effects.

Used primarily in herbal medicine and certain European medicinal traditions, couch grass is now recognized for its natural applications in supporting kidney, digestive, and urinary functions.

Couch grass is a plant rich in natural compounds that support various physiological functions, particularly those of the kidneys, the digestive system, and the urinary tract.

Diuretic and purifying

Couch grass rhizome promotes the natural elimination of water by the kidneys. This action helps relieve water retention and contributes to better detoxification of the body. It is therefore often used for heavy legs or to support gentle drainage.

Soothing for the urinary tract

Couch grass is traditionally used to relieve urinary discomfort. It is known for its soothing effect on the mucous membranes, which can be helpful for mild discomforts such as a burning sensation or irritation during urination.

Properties related to the prevention of urinary stones

Thanks to its draining effect, couch grass supports the regular elimination of waste through urine. This can reduce the risk of crystal formation in the urinary tract and support those prone to mild kidney issues or temporary renal colic.

Digestive and hepatic properties

Couch grass stimulates bile secretion and aids digestion, particularly of fats. It is also noted for its gentle effect on intestinal transit, especially in cases of slow digestion or digestive discomfort linked to an overworked liver.

Thanks to its wealth of active compounds, couch grass is used to naturally support several bodily functions. Here are the main recognized benefits of this plant:

• Helps detoxify the body by supporting the elimination of metabolic waste through its diuretic effect.

• Contributes to urinary comfort, particularly in cases of temporary discomfort or irritation.

• Supports the prevention of urinary stones by promoting regular elimination.

• Promotes digestive comfort, particularly in cases of slow digestion.

These benefits make couch grass a plant of choice in natural regimens designed to support eliminatory, digestive, and urinary functions.

Couch grass, often overlooked outside of herbal medicine, can be used in various forms as part of a natural approach to well-being. Here are the main traditional uses of its rhizomes.

As an infusion or decoction

Dried couch grass rhizomes have been used for centuries to prepare infusions or decoctions, primarily for their diuretic effect.

As an infusion: pour simmering water over 1 to 2 teaspoons of dried rhizome, let steep for 10 minutes, strain, and drink.

As a decoction : Boil 30 g of rhizome in 1 liter of water for 10 minutes. You can add a small amount of licorice root to sweeten the taste.

These preparations are traditionally consumed as a short course of treatment to support kidney function and relieve urinary discomfort.

In cooking

Although rare today, couch grass was once used in certain folk traditions. Its young shoots can be boiled and added to soups or broths detox. However, this type of use remains very rare and requires caution: only the root is generally used in herbal medicine.

For external use

When applied topically, a concentrated couch grass decoction can be used as a compress to soothe sensitive or inflamed areas. This use relies on its natural mucilage, known for its soothing effect on the skin. It is advisable to test for skin tolerance before prolonged use.

A draining and toning infusion to support the body

Aroma-Zone’s Organic Lemon Detox Herbal Tea is a blend of aromatic plants traditionally known for supporting liver function, promoting natural elimination, and complementing detox regimens. Thanks to Rosemary, Blackcurrant, Nettle, and Peppermint, it gently supports the body’s natural drainage processes. Its fresh, lemony, and slightly minty flavor makes it an ideal infusion to enjoy throughout the day, with no caffeine. This blend of herbs, grown primarily in France using organic farming methods, is designed to combine well-being, naturalness, and taste, without compromising on effectiveness.

Store away from moisture and heat. Close the bag carefully after use to preserve the quality of the herbs. This herbal tea should be consumed as part of a varied and balanced diet.

Targeted support for elimination and body shape

The dietary supplement Fat Burner & Drain combines natural extracts of guarana, prickly pear, and green tea to act on both fat metabolism and water elimination. It supports weight-loss regimens by promoting a feeling of lightness, while maintaining the body’s balance. Its formula, with no added sugars, is designed to be consumed throughout the day, making it ideal for simple and gradual use.

This supplement is intended for adults only and is not recommended for pregnant or breastfeeding women, or for those under 18 years of age. Do not consume on an empty stomach or in combination with other products containing green tea. EGCG intake should not exceed 800 mg/day. This product is not recommended for individuals with peptic ulcers, heart conditions, or hyperthyroidism. It is not a substitute for a varied diet or a balanced lifestyle. If you are undergoing medical treatment, consult a healthcare professional.

A concentrated source of antioxidants for a natural tonic treatment

Aroma-Zone’s Organic Japanese Matcha Green Tea is a fine powder made from high-quality green tea, rich in catechins, EGCG, and caffeine, known for its revitalizing and antioxidant effects. Thanks to the presence of L-theanine, it offers a balanced effect: it stimulates alertness without causing jitters. Whether enjoyed as a beverage or used in cooking, it perfectly complements detox and weight-loss regimens while supporting the skin’s natural radiance. Its intense green color and plant-based flavor also make it a top choice for healthy and delicious recipes.

Naturally contains caffeine. This product is not recommended for children or for pregnant or breastfeeding women. Store in a cool, dry place away from light. Close the bag tightly after opening.

A natural ally for detoxifying and revitalizing the body

Our marine active ingredient Premium Chlorella is a microalgae with exceptional nutritional properties, rich in protein, vitamins, minerals, and antioxidant carotenoids. It is known for its detoxifying effect, particularly due to its ability to bind certain pollutants and heavy metals. Particularly suitable for seasonal detox regimens, vegetarian diets, or in cases of temporary fatigue, it naturally supports the body’s balance and contributes to overall well-being.

This product is not recommended for pregnant or breastfeeding women. If you have a known allergy to algae or seafood, it is recommended that you avoid consumption or consult a healthcare professional. Store in a cool, dry place away from light. Close tightly after use.

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A tonic infusion to naturally support your figure

Our Slimming Mate Herbal Tea combines plants with draining and energizing properties—such as mate, hibiscus, and blackcurrant—to support weight management and digestive well-being. Rich in natural caffeine, this infusion stimulates the body while promoting fluid elimination and digestive comfort. Its fruity, slightly tangy flavor is enhanced by ingredients like pineapple and chicory, making for a drink that is as enjoyable as it is beneficial.

High caffeine content: not recommended for children, pregnant women, or nursing mothers. Store away from heat and humidity. Close the bag tightly after each use.

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Couch grass is a plant that is generally well-tolerated in traditional use, but certain precautions must be taken to avoid adverse effects. Its consumption is not recommended for pregnant or breastfeeding women due to its diuretic effect. It is not suitable for children under 12 years of age. If you are currently undergoing treatment, particularly for kidney, heart, or metabolic disorders, it is important to consult a healthcare professional, as couch grass may enhance the effects of certain diuretics.

Excessive consumption may cause mild digestive issues, such as cramps or diarrhea, and contribute to a loss of potassium. It is therefore essential to follow the recommended dosages. Furthermore, it is not recommended to combine multiple plants with diuretic effects without appropriate guidance, in order to maintain the body’s fluid balance.

Starting with moderate amounts and observing your body’s reaction remains the best approach for safe use.

Couch grass fits easily into a wellness routine, particularly as an infusion or decoction. To benefit from its draining effects, it is recommended to consume it as an occasional treatment, following the recommended dosages. As with any plant with diuretic effects, be sure to drink enough water throughout the day to support gentle elimination.

Lauréna is a journalist specialising in lifestyle, wellness, and psychology. Between writing articles, she travels around the world, discovering what it has to teach us.