Gaillet jaune (Galium verum): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Lady's Bedstraw work as a diuretic?

Lady's Bedstraw (Galium verum) contains active compounds including asperuloside, flavonoids, and tannins that support its diuretic action. The herb promotes kidney function and increases urine output, helping eliminate excess fluids from the body. Asperuloside, an iridoid glycoside found in the plant, is considered the primary compound responsible for the lymphatic and diuretic effects. Evidence level: C (traditional use with some pharmacological data supporting mechanism).

Does Lady's Bedstraw interact with any medications?

Currently, there are no well-documented drug interactions for Lady's Bedstraw. However, due to its diuretic properties, it may theoretically enhance the effects of prescription diuretic medications such as furosemide or hydrochlorothiazide, potentially leading to dehydration or electrolyte imbalances. Those taking lithium should exercise caution, as increased urination could affect lithium levels. Always consult a healthcare provider before combining herbal supplements with prescription medications. Evidence level: C.

What is the recommended dosage for Lady's Bedstraw?

The typical adult dosage for Lady's Bedstraw is 3-5 grams of dried herb prepared as a tea, or 2ml of tincture taken daily. To make a tea, steep the dried herb in hot water for 10-15 minutes before straining. For tincture preparations, follow manufacturer instructions or consult a qualified herbalist. These recommendations are based on traditional use rather than clinical trials. Evidence level: C. Always start with lower doses to assess tolerance.

Is Lady's Bedstraw safe during pregnancy?

Lady's Bedstraw is generally considered safe during pregnancy when used in recommended amounts. The herb has a long history of traditional use without significant adverse effects reported for pregnant women. However, as with any herbal supplement during pregnancy, it is advisable to consult a healthcare provider or qualified herbalist before use. No specific contraindications have been identified for pregnant women. Evidence level: C (based on traditional use rather than clinical studies).

What is Lady's Bedstraw used for medicinally?

Lady's Bedstraw has been used traditionally as a diuretic tonic, for lymphatic system support, and to address urinary complaints such as cystitis and water retention. In folk medicine, it has also been historically used for epilepsy, though this application lacks scientific validation. The herb's lymphatic properties may help support the body's natural detoxification processes. Historically, it was also used to curdle cheese and stuff mattresses due to its pleasant scent. Evidence level: C.

What are the side effects of Lady's Bedstraw?

Lady's Bedstraw is generally well-tolerated with few reported side effects. The most commonly noted adverse effect is rare skin sensitization, which may cause contact dermatitis in susceptible individuals when handling the fresh plant. No significant contraindications exist for this herb. Those with known allergies to plants in the Rubiaceae family, such as cleavers or coffee, should exercise caution. Evidence level: C. Discontinue use if any adverse reactions occur and seek medical advice.

Fiche d'information compilée à partir de PubMed

Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.

Compilé à partir de 30 articles PubMed · modèle : gemma4:31b

Résumé

Galium verum, known as Lady's Bedstraw, is a perennial herb with recognized antioxidant, cardioprotective, and antimicrobial properties [PMID:40333892, 30632812].

Contexte

Galium verum (Yellow Bedstraw) is a rhizomatous perennial herb of the Rubiaceae family, native to Eurasia and Africa, and introduced to southern Canada and the northern U.S. [PMID:40333892].

Usages traditionnels

It has been widely used in traditional medicine for its diuretic, anti-inflammatory, antimicrobial, analgesic, and anticancer properties [PMID:40333892]. It is also traditionally used in cheese-making due to its milk-clotting enzymes [PMID:29339117] and as an anticancer decoction applied internally and externally [PMID:25017936, 24366449].

Composés actifs

The plant is rich in flavonoids (including diosmetin, rutin, quercetin, and kaempferol), phenolic acids (chlorogenic, caftaric, and gallic acids), iridoids (notably asperuloside), anthraquinones, phytosterols, coumarins, and tannins [PMID:40333892, 36985838, 39253919, 20209910].

Mécanisme d'action

G. verum exhibits strong antioxidant activity that protects cells from oxidative stress and inflammation [PMID:40333892]. It modulates the activity of antioxidant enzymes and alleviates the production of pro-oxidants [PMID:30632812]. In cancer cells, sublethal doses act as inhibitors of motility by upregulating TIMP-1 and downregulating MMP-2 [PMID:25017936, 24366449].

Preuves cliniques

Preuve DCardiotoxicity (Doxorubicin-induced)

Methanol extract (50 mg/kg/day for 14 days in rats) effectively suppressed disturbed heart response to perfusion pressure changes and reduced prooxidants [PMID:37372007]

Preuve DMyocardial Ischemia/Reperfusion Injury

Methanol extract (500 mg/kg for 28 days in hypertensive rats) preserved cardiac contractility, systolic and diastolic function, and reduced structural damage [PMID:30632812, 30863479]

Preuve DHypertension

An oral liquid formulation of ethanol extract effectively reduced blood pressure in spontaneously hypertensive rats [PMID:39125920]

Preuve DAphthous Stomatitis

A mucoadhesive oral gel based on ethanol extract significantly decreased ulcer size in rats [PMID:35897855]

Preuve DPsoriasis

Extract administration (125 mg/kg for 4 weeks in rats) mitigated cardiovascular events and showed therapeutic potential in imiquimod-induced models [PMID:39894905, 40806422]

Preuve D

Sécurité et effets indésirables

In vitro assessments on myoblasts and in ovo on chorioallantoic membranes were conducted to assess the biosafety profile [PMID:40061279].

Synthèse des preuves

The current evidence is based primarily on in vitro studies and animal models (rats), indicating strong antioxidant and cardioprotective potential, but lacks human clinical trials.

Sources PubMed

1.PMID: 37372007 (2023) — Lady's Bedstraw as a Powerful Antioxidant for Attenuation of Doxorubicin-Induced Cardiotoxicity. · Antioxidants (Basel, Switzerland)
2.PMID: 40333892 (2025) — A Review of Phytochemical and Pharmacological Studies on Galium verum L., Rubiaceae. · Molecules (Basel, Switzerland)
3.PMID: 39125920 (2024) — Hypotensive and Cardioprotective Potential of Yellow Bedstraw Extract-Based Oral Liquid in Spontaneously Hypertensive Rats. · International journal of molecular sciences
4.PMID: 36985838 (2023) — Phytochemical Screening and Antioxidant Activity of Selected Estonian Galium Species. · Molecules (Basel, Switzerland)
5.PMID: 18636371 (2008) — Flavonoids from Galium verum L. · Journal of Asian natural products research

Gaillet jaune

Sources et citations

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