Rheum Tanguticum (Rheum tanguticum): Benefits, Dosage, Safety & Evidence

Questions fréquentes

How does Rheum tanguticum work as a laxative?

Rheum tanguticum contains anthraquinone glycosides, including emodin and aloe-emodin, which are metabolized by intestinal bacteria into active aglycones. These compounds stimulate colonic motility and increase fluid secretion by activating chloride channels in the intestinal epithelium. The herb also promotes peristalsis through direct irritation of the gut lining. Effects typically occur 6-12 hours after ingestion. Evidence level: C (preclinical studies).

Can I take Rheum tanguticum during pregnancy?

No, Rheum tanguticum is contraindicated during pregnancy and breastfeeding. The anthraquinone compounds stimulate uterine contractions and may cause miscarriage or premature labor. Additionally, these compounds pass into breast milk and can cause diarrhea in nursing infants. Pregnant women should avoid all stimulant laxatives containing anthraquinones. Evidence level: C (traditional contraindication and pharmacological data).

What is the recommended dosage for Tibetan rhubarb root?

Traditional decoction dosage ranges from 3-12g of dried root daily. Lower doses (3-6g) act as a digestive stimulant, while higher doses (6-12g) produce laxative effects. Standardized extracts are typically dosed at 200-500mg daily. The herb should be used short-term only, as prolonged use risks electrolyte imbalance and laxative dependence. Evidence level: C (traditional use and clinical experience).

Does Rheum tanguticum interact with prescription medications?

Yes, Rheum tanguticum has several potential drug interactions. Chronic use may cause hypokalemia, increasing toxicity risk with digoxin, antiarrhythmics, and diuretics. Reduced intestinal transit time can decrease absorption of oral medications. Theoretically, it may potentiate anticoagulants through vitamin K depletion. Avoid combining with other stimulant laxatives or medications that cause potassium loss. Evidence level: C (theoretical and case reports).

What are the side effects of taking Tibetan rhubarb?

Common side effects include diarrhea, abdominal cramping, and nausea. Prolonged or excessive use may cause potassium depletion, electrolyte imbalances, dehydration, and melanosis coli (pigmentation of the colon lining). Some individuals experience rectal irritation or fluid loss. Discontinue immediately if severe diarrhea, persistent pain, or signs of dehydration occur. Evidence level: C (clinical observation and traditional knowledge).

What conditions is Rheum tanguticum used to treat in traditional medicine?

In Traditional Chinese Medicine and Tibetan medicine, Rheum tanguticum is used for constipation, liver disorders, blood stasis, fever, and various infections. It is classified as a powerful purgative and blood-moving agent. Modern research has investigated its hepatoprotective and antimicrobial properties, though clinical evidence remains limited. It should not replace conventional treatments for serious liver disease or infections. Evidence level: C (traditional use).

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

Rheum tanguticum (RT), a member of the Polygonaceae family, is a traditional Chinese medicinal herb used to treat cardiovascular, gastrointestinal, and inflammatory diseases [PMID:37814999, PMID:36445877].

Contexte

Rheum tanguticum is a perennial plant endemic to the Qinghai-Tibetan Plateau [PMID:33366315, PMID:37612424]. It is listed in the Chinese Pharmacopoeia and is currently classified as Vulnerable on the IUCN Red List due to heavy exploitation and low reproductive rates [PMID:37814999, PMID:33366315].

Usages traditionnels

It has been widely used in traditional Chinese medicine to treat cardiovascular and gastrointestinal diseases [PMID:37814999], inflammatory diseases [PMID:36445877], fever and toxicity [PMID:27302738], as well as intestinal carbuncles, abdominal pain, and damp-heat dysentery [PMID:40992441]. It is also used as a laxative [PMID:38539101] and has been used in the treatment of neonatal jaundice [PMID:9104069].

Composés actifs

The herb is a major source of anthraquinones, including emodin, rhein, chrysophanol, aloe-emodin, and physcion, as well as their glycoside derivatives [PMID:41158982, PMID:37612424]. Other active components include sennosides, tannins, phenolic acids, and flavones [PMID:38539101, PMID:35141263].

Mécanisme d'action

Active compounds such as emodin exhibit anti-inflammatory, immunomodulatory, anti-fibrosis, anti-tumor, anti-viral, anti-bacterial, and anti-diabetic properties [PMID:34629100]. Specifically, aloe-emodin can inhibit the CYP1B1 enzyme [PMID:35661798], and chrysophanein may repair the mucosal barrier in ulcerative colitis by targeting the CCDC25/ILK/HIF-1α pathway [PMID:40992441]. R. tanguticum polysaccharides may attenuate colitis by suppressing the NF-κB signaling pathway [PMID:26069953].

Preuves cliniques

Preuve BAcute diverticulitis

A trial of the Kampo formula daiobotanpito (containing rhubarb) combined with antibiotics showed no significant difference in treatment success rates compared to placebo, although the treatment group showed a significant reduction in hospitalization days [PMID:40595170].

Preuve DInfluenza A virus

An ethanolic extract of R. tanguticum inhibited several H1N1 subtypes by blocking viral attachment, penetration, and virus-endosome fusion [PMID:27302738].

Preuve DUlcerative colitis

Chrysophanein extracted from R. tanguticum ameliorated symptoms and repaired mucosal barrier integrity in mouse models [PMID:40992441].

Preuve CTraumatic brain injury

R. tanguticum is noted to show a significant decrease in neuronal injury via mechanisms such as increasing superoxide dismutase and catalase activities [PMID:31206893].

Synthèse des preuves

Evidence consists primarily of phytochemical analyses, animal models, and review articles (Level C/D), with one randomized controlled trial (Level B) for a combined formula showing mixed results.

Sources PubMed

1.PMID: 37814999 (2024) — Exploration of plant metabolomics variation and absorption characteristics of water-extracted Rheum tanguticum and ethanol-extracted Rheum tanguticum by UHPLC-Q-TOF-MS/MS. · Phytochemical analysis : PCA
2.PMID: 36445877 (2022) — Comparative study of the Rheum tanguticum's chemical contents based on spatial distribution characteristics. · PloS one
3.PMID: 41158982 (2025) — Rhubarb: Traditional Uses, Phytochemistry, Multiomics-Based Novel Pharmacological and Toxicological Mechanisms. · Drug design, development and therapy
4.PMID: 34629100 (2021) — Advances in the study of emodin: an update on pharmacological properties and mechanistic basis. · Chinese medicine
5.PMID: 26357619 (2014) — Traditional Chinese Medicine Induced Liver Injury.

Rheum Tanguticum

Sources et citations

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