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YD
Not CommonAI-summarized
Yellow Dock Root
Rumex crispus
Blood purification and skin conditions in European folk medicine
Yellow dock root functions as a gentle stimulant laxative due to its anthraquinone glycoside content, specifically compounds like emodin and chrysophanol. These constituents stimulate peristalsis in the large intestine by increasing water and electrolyte secretion into the bowel, which softens stool and promotes evacuation. Unlike stronger purgatives such as senna, yellow dock is considered milder and is often better tolerated for occasional constipation associated with liver congestion. Evidence Level: B.
Can you take yellow dock root while pregnant?
No, yellow dock root is considered unsafe during pregnancy. The anthraquinone content stimulates smooth muscle contraction in the intestines and uterus, which poses a risk of miscarriage or premature labor. Additionally, the laxative effects can cause significant fluid and electrolyte loss, which is detrimental during pregnancy. Women who are pregnant or breastfeeding should avoid yellow dock root and consult a healthcare provider for safer alternatives to treat anemia or constipation. Evidence Level: B.
Does yellow dock interact with blood thinners or medications?
Yes, yellow dock root carries potential interactions with anticoagulant medications like warfarin. While primarily known for its laxative effects, the herb contains vitamin K and other constituents that might theoretically affect blood clotting times, though clinical data remains limited. Additionally, because yellow dock can cause diarrhea, it may alter the absorption rates of oral medications. Patients taking anticoagulants or those with bleeding disorders should avoid yellow dock unless supervised by a qualified healthcare provider. Evidence Level: C.
What is the recommended dosage for yellow dock root?
For adults, the standard dosage for yellow dock root is 2-4 grams of dried root prepared as a tea, taken three times daily. Alternatively, a tincture dosage of 2-4 milliliters (approximately 40-80 drops) can be taken three times daily. Because the herb has a bitter taste and stimulant laxative properties, it is often best to start with a lower dose to assess tolerance. Long-term use is generally discouraged without professional guidance. Evidence Level: Traditional.
Is yellow dock effective for treating anemia?
Yellow dock is traditionally used as a nutritive tonic for iron-deficiency anemia. While the plant does contain some iron, the exact mechanism for its blood-building reputation is not fully understood; it may enhance iron absorption or improve liver function rather than providing large amounts of iron alone. Herbalists often combine it with other iron-rich herbs. However, individuals with severe anemia should not rely solely on yellow dock and should seek medical diagnosis. Evidence Level: Traditional.
PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 30 PubMed articles · model: gemma4:31b
Summary
Rumex crispus (Yellow Dock) is a perennial plant used traditionally as an anti-inflammatory, laxative, and antimicrobial agent [PMID:39520965, 31827556].
Background
Rumex crispus L., also known as curly dock, is a member of the Polygonaceae family native to Europe and western Asia and naturalized throughout temperate regions [PMID:30722391, 33365734].
Traditional uses
Traditionally used as an astringent, laxative, diuretic, mild tonic, blood cleanser, spasmolytic, and cholagogue agent [PMID:39520965]. It has been used in Asian medicine for hemorrhage and dermatosis [PMID:29070038], in Turkey for postpartum complications and infertility [PMID:33779947], and by First Nations/native Americans to treat sores and rashes on horses [PMID:27394389].
Active compounds
Approximately 224 constituents have been identified, including anthraquinones (such as emodin, chrysophanol, physcion, and rhein), naphthalene derivatives, flavonoids, coumarins, stilbenes, and essential oils [PMID:39520965, 29070038, 40329888].
Mechanism of action
Extracts demonstrate the ability to inhibit the production of pro-inflammatory cytokines (TNF-α, IFN-γ, IL-1β, and IL-6) and suppress mRNA expression of iNOS and COX-2 [PMID:30675468]. In bone health, water extracts inhibit osteoclastogenesis and induce osteoblast mineralization [PMID:29070038].
Clinical evidence
Evidence DInflammation
Extracts (specifically Beopje processed) show significant inhibitory effects on LPS-induced inflammatory responses in RAW 264.7 cells [PMID:32458452].
Evidence DHyperglycemia
Methanol extracts of flowers and leaves significantly reduced glucose levels in streptozotocin-induced diabetic rats [PMID:37570730].
Evidence DBone Loss
Water extract prevented bone loss by inhibiting osteoclastogenesis in RANKL-induced mice models [PMID:29070038].
Evidence DColorectal Cancer
Water-soluble fractions exhibited anti-proliferative and apoptotic activity against human colorectal adenocarcinoma (DLD-1) cells [PMID:38276257].
Evidence DMicrobial Infections
Acetone root extracts showed antimicrobial potency, including activity against MRSA [PMID:31827556, 34695862].
Safety & adverse effects
A case report noted symptomatic immune thrombocytopenia (platelet count 5 K/µl) in a woman consuming herbal tea containing Rumex crispus and Arctium lappa [PMID:35402325]. In sheep, ingestion of the plant caused acute oxalate toxicosis characterized by hypocalcemia, azotemia, tremors, and renal tubular degeneration [PMID:2365622].
Evidence summary
The current evidence is primarily based on in vitro cell studies and in vivo animal models (Level D), with limited case reports on safety. There are no human clinical trials provided in the source material.
PubMed sources
1.PMID: 39520965 (2024) — Rumex crispus L.: A comprehensive review on botany, traditional uses, phytochemistry, pharmacology, and safety. · International immunopharmacology
2.PMID: 38276257 (2023) — Anti-Proliferative and Apoptotic Activities of Rumex crispus. · Life (Basel, Switzerland)
3.PMID: 35918556 (2022) — New seco-anthraquinone glucoside from the roots of Rumex crispus. · Natural products and bioprospecting
4.PMID: 35361815 (2022) — Molecular evidence for natural hybridization between Rumex crispus and R. obtusifolius (Polygonaceae) in Korea. · Scientific reports
5.PMID: 32458452 (2020) — Anti-inflammatory effects of Beopje curly dock (Rumex crispus L.) in LPS-induced RAW 264.7 cells and its active compounds. · Journal of food biochemistry
Government sources
No direct government monograph is available for this herb. The content below is AI-generated and has not been verified against an authoritative government source. Use the search links to check official sources before relying on this information.
6.PMID: 20623623 (2011) — Antioxidant activity of yellow dock (Rumex crispus L., Polygonaceae) fruit extract. · Phytotherapy research : PTR
7.PMID: 33779947 (2021) — Preventive effect of Rumex crispus L. on surgically induced intra-abdominal adhesion model in rats. · Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences
8.PMID: 39720831 (2025) — Multiple benefits of herbs: Polygonaceae species in veterinary pharmacology and livestock nutrition. · Veterinary and animal science
9.PMID: 33365734 (2019) — The complete chloroplast genome of a medicinal resource plant (Rumex crispus). · Mitochondrial DNA. Part B, Resources
10.PMID: 37215886 (2023) — Ecofriendly green synthesis and characterization of silver zinc oxide nanocomposite using the aqueous leaf extract of Rumex Crispus: Evaluation of its antimicrobial and antioxidant activity. · Heliyon
11.PMID: 29070038 (2017) — Water extract of Rumex crispus prevents bone loss by inhibiting osteoclastogenesis and inducing osteoblast mineralization. · BMC complementary and alternative medicine
12.PMID: 31827556 (2019) — Evaluation of the Bioactivities of Rumex crispus L. Leaves and Root Extracts Using Toxicity, Antimicrobial, and Antiparasitic Assays. · Evidence-based complementary and alternative medicine : eCAM
13.PMID: 34695862 (2022) — More Than Just a Weed: An Exploration of the Antimicrobial Activity of Rumex crispus using a Multivariate Data Analysis Approach. · Planta medica
14.PMID: 31671906 (2019) — Antioxidant, Xanthine Oxidase, α-Amylase and α-Glucosidase Inhibitory Activities of Bioactive Compounds from Rumex crispus L. Root. · Molecules (Basel, Switzerland)
15.PMID: 37570730 (2023) — Evaluation of α-Glucosidase Inhibition and Antihyperglycemic Activity of Extracts Obtained from Leaves and Flowers of Rumex crispus L. · Molecules (Basel, Switzerland)
16.PMID: 31340505 (2019) — Variation in Phenolic Compounds Content and Antioxidant Activity of Different Plant Organs from Rumex crispus L. and Rumex obtusifolius L. at Different Growth Stages. · Antioxidants (Basel, Switzerland)
17.PMID: 35402325 (2022) — Herbal Teas and Thrombocytopenia: A Curious Case of Yellow Dock and Burdock-Induced Thrombocytopenia. · European journal of case reports in internal medicine
18.PMID: 2365622 (1990) — Acute oxalate poisoning attributable to ingestion of curly dock (Rumex crispus) in sheep. · Journal of the American Veterinary Medical Association
19.PMID: 27394389 (2016) — Possible similarities between the folk medicine historically used by First Nations and American Indians in North America and the ethnoveterinary knowledge currently used in British Columbia, Canada. · Journal of ethnopharmacology
20.PMID: 40329888 (2025) — A new diphenylmethanone from Rumex crispus L. ameliorates sodium palmitate-oleate induced steatosis in HepG2 cells. · Natural product research
21.PMID: 30722391 (2013) — First Report of Powdery Mildew Caused by Erysiphe heraclei on Curled Dock (Rumex crispus) in South Korea. · Plant disease
22.PMID: 32710386 (2020) — Preclinical study of the medicinal plants for the treatment of malignant melanoma. · Molecular biology reports
23.PMID: 32784977 (2020) — In Vitro Antioxidant, Antiinflammation, and Anticancer Activities and Anthraquinone Content from Rumex crispus Root Extract and Fractions. · Antioxidants (Basel, Switzerland)
24.PMID: 30823426 (2019) — Comparison of the Proximate Composition, Vitamins (Ascorbic Acid, α-Tocopherol and Retinol), Anti-Nutrients (Phytate and Oxalate) and the GC-MS Analysis of the Essential Oil of the Root and Leaf of Rumex crispus L. · Plants (Basel, Switzerland)
25.PMID: 34306086 (2021) — Phytochemical Composition, Antioxidant, Antiacetylcholinesterase, and Cytotoxic Activities of Rumex crispus L. · International journal of analytical chemistry
26.PMID: 30675468 (2018) — Rumex crispus and Cordyceps militaris Mixture Ameliorates Production of Pro-Inflammatory Cytokines Induced by Lipopolysaccharide in C57BL/6 Mice Splenocytes. · Preventive nutrition and food science