Omnia SanaPlant Comparison
Bistort vs Water avens
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Bistort and Water avens: they share 7 indicated uses (cancer (anticancer research), diarrhoea, infection (general), …); 6 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Bistort | Water avens | Verdict |
|---|---|---|---|
| Cancer (anticancer research) | 2/10 | 2/10 | Comparable evidence |
| Diarrhoea | 1/10 | 7/10 | Stronger for Water avens |
| Infection (general) | 1/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 2/10 | Comparable evidence |
| Skin irritation | 1/10 | 2/10 | Comparable evidence |
| Sore throat | 1/10 | 2/10 | Comparable evidence |
| Wounds | 1/10 | 2/10 | Comparable evidence |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
Very high tannin content is the basis of the strong astringency.
Contribute to antioxidant and antibacterial activity.
Hydrolysable ellagitannins - the dominant astringent constituents of water avens.
Additional hydrolysable and condensed tannins contributing to the astringent, antidiarrhoeal and elastase-inhibiting activity.
Ellagic acid and ellagic-acid glycosides (antioxidant; precursors of anti-inflammatory urolithins in the gut).
Gallic acid and galloyl derivatives (antioxidant, antimicrobial).
Antioxidant flavonol glycosides.
Triterpenoid saponins and aglycones.
The root essential oil is dominated by eugenol, giving the clove-like scent (shared with clove) and antiseptic, mild-anaesthetic character.
Pharmacological Actions
Anti-inflammatory gargle / mouthwash for inflammation of the mouth and throat (sore throat)
Bistorta officinalis (Polygonum bistorta) rhizome extract, rich in gallotannins and phenolic acids, shows cytotoxic and pro-apoptotic activity against hepatocellular and other cancer cells (preclinical).
Astringent for mild diarrhoea (tannins tighten the gut lining and reduce excess secretion)
Antibacterial (topical) - GC-MS-characterised extracts showed antibacterial activity
Astringent for mild diarrhoea (tannins tighten the gut lining and reduce excess secretion)
Astringent hydrolysable tannins; traditional remedy for diarrhoea and dysentery.
Inhibits prostaglandin biosynthesis; ellagitannin-derived urolithins are anti-inflammatory.
Geum (avens) extracts show antineoplastic and skin antineoplastic activity in vitro (preclinical).
Antiviral activity of avens (Geum) extract in vitro (congener).
Neuroprotective activity of water avens polyphenol fractions.
Avens root extract showed antidiabetic (glucose-lowering) activity in vivo (congener G. urbanum).
Traditional & Indicated Uses
inferred from anti-inflammatory action
Polygonum bistorta (Bistorta officinalis) methanol-water and aqueous extracts inhibit hepatocellular carcinoma cells via ROS-induced ER stress and apoptosis (delaying xenograft tumour growth), with phenolic constituents driving the cytotoxicity (preclinical).
Astringent for mild diarrhoea (tannins tighten the gut lining and reduce excess secretion)
inferred from styptic action
inferred from antimicrobial action
Anti-inflammatory gargle / mouthwash for inflammation of the mouth and throat (sore throat)
inferred from astringent action
Anti-inflammatory gargle / mouthwash for inflammation of the mouth and throat (sore throat)
inferred from anticancer action
Astringent (tannin) antidiarrhoeal; traditional remedy for diarrhoea and dysentery.
Root decoction used traditionally as a gargle/mouthwash for mouth ulcers and spongy gums; antimicrobial.
inferred from astringent/antimicrobial gargle use
inferred from antimicrobial action
inferred from astringent/antimicrobial action and traditional wound-wash use
inferred from anti-inflammatory/antimicrobial skin activity
Avens root showed antidiabetic activity in vivo (congener).
Safety, Cautions & Contraindications
Very tannin-rich: high or prolonged intake may cause stomach upset or constipation and can reduce the absorption of iron and some medicines taken at the same time.
Traditional use only; diarrhoea persisting beyond a few days, or mouth/throat inflammation that does not settle, needs medical assessment.
Safety in pregnancy and breastfeeding is not established; avoid medicinal doses.
The root and herb are rich in tannins; large or prolonged doses may cause digestive upset or constipation and can reduce the absorption of iron and some medicines - take apart from iron supplements and other drugs.
Safety in pregnancy and breastfeeding has not been established; avoid medicinal doses during pregnancy and lactation.
In-vivo toxicity testing of avens (Geum) extract showed a favourable profile at the doses studied, but high-dose or long-term safety is not established.
External Ids
Botanical Description
Perennial herb rising from a thick, twisted, S- or snake-shaped rhizome (giving the names 'bistort' and 'snakeroot'), blackish outside and pink inside. The basal leaves are broadly oval to lance-shaped on long stalks; stem leaves are smaller and stalkless. A single dense, cylindrical spike of small, pale pink flowers is borne atop each unbranched flowering stem.[14]
A perennial herb of the rose family, 20-60 cm tall, growing from a thick, reddish, aromatic rhizome that smells of cloves when broken (from its eugenol content) - the source of the name 'chocolate root'. The basal leaves are pinnate with a large terminal lobe, forming a rosette. Its distinctive flowers are nodding (drooping) bells with dull purple-pink to orange sepals and cream-to-pink petals, quite unlike the erect open yellow flowers of its relative wood avens (Geum urbanum). The fruit is a rounded head of achenes, each with a hooked, feathery style that clings to fur and clothing.[1, 9]
Habitat
Grows in damp meadows, pastures, streamsides and mountain grassland on moist, often calcareous soils; native to Europe and temperate Asia, favouring cooler upland regions.[14]
Damp ground: wet meadows, marshes, streamsides, ditches, fens and damp woodland across Europe, western Asia and North America. It favours moist, base-rich soils. Unlike wood avens (Geum urbanum), a plant of dry hedgerows and shade, water avens grows in wet, open places.[1]
Harvesting
The rhizome is dug in autumn or early spring, when tannin content is highest, cleaned and dried; aerial parts are gathered in summer while flowering.[14]
The reddish rhizome/root is the main medicinal part, dug in spring or autumn and dried carefully to preserve its clove-scented, eugenol-bearing, tannin-rich qualities; the aerial flowering parts are gathered in summer. The root has historically been used both as an astringent medicine and as a flavouring (a coffee/chocolate substitute and to flavour ale).[5, 9]
Traditional Uses
Bistort rhizome, one of the most tannin-rich temperate herbs, has a long European folk history as a powerful astringent for mild diarrhoea, as a gargle for sore throat and mouth inflammation, and topically as a vulnerary and styptic for minor wounds and bleeding; young leaves have also traditionally been eaten as a spring pot-herb ('Easter-ledge pudding').[13, 14]
Water avens shares the astringent, tannin-based traditional medicine of the avens (Geum) genus. The clove-scented root has been used as an astringent for diarrhoea, dysentery and other bowel complaints, as a gargle and mouth wash for sore throat, mouth ulcers and spongy gums, and as a wash for wounds and skin inflammation. It was also valued as an aromatic bitter tonic and, historically, a febrifuge, and the fragrant root was used to flavour ale and as a coffee/chocolate substitute (hence 'chocolate root').[8, 9]
Preparations
References
Lookalikes Review
Synonyms
Not documented
Drug Class Interactions
Not documented
Pairings
Not documented
Classic Rosaceae astringent pairing: both are tannin-rich roots traditionally combined for diarrhoea and as mouth/throat gargles.[8]
Rosaceae astringents rich in hydrolysable tannins, traditionally used together for diarrhoea, sore throat and as gargles.[8]
References & Sources
- Pawłowska, K.A., Hałasa, R., Dudek, M.K., Majdan, M. et al (2020) 'Antibacterial and anti-inflammatory activity of bistort (Bistorta officinalis) aqueous extract and its major components: justification of the usage of the medicinal plant material as a traditional topical agent', Journal of Ethnopharmacology, 260, pp. 113077. doi:10.1016/j.jep.2020.113077 Preclinical
https://doi.org/10.1016/j.jep.2020.113077 - Jovanović, M., Morić, I., Nikolić, B., Pavić, A. et al (2020) 'Anti-Virulence Potential and In Vivo Toxicity of Persicaria maculosa and Bistorta officinalis Extracts', Molecules, 25(8), pp. 1811. doi:10.3390/molecules25081811 Preclinical
https://doi.org/10.3390/molecules25081811 - Duwiejua, M., Zeitlin, I.J., Waterman, P.G. and Gray, A.I (1994) 'Anti-inflammatory activity of Polygonum bistorta, Guaiacum officinale and Hamamelis virginiana in rats', Journal of Pharmacy and Pharmacology, 46(4), pp. 286-290. doi:10.1111/j.2042-7158.1994.tb03795.x Preclinical
https://doi.org/10.1111/j.2042-7158.1994.tb03795.x - Esmaealzadeh, N., Abdolghaffari, A., Baeeri, M., Hasanpour, M., Iranshahi, M., Santarcangelo, C., Gholami, M. and Bahramsoltani, R (2024) 'Protective effect of freeze-dried extract of Persicaria bistorta Samp. on acetic acid-induced colitis model in rats: involvement of nitric oxide and opioid system', Inflammopharmacology, 32(6), pp. 3845-3861. doi:10.1007/s10787-024-01518-8 Preclinical
https://doi.org/10.1007/s10787-024-01518-8 - Klimczak, U., Wozniak, M., Tomczyk, M. and Granica, S (2017) 'Chemical composition of edible aerial parts of meadow bistort (Persicaria bistorta (L.) Samp.)', Food Chemistry, 230, pp. 281-290. doi:10.1016/j.foodchem.2017.02.128 Preclinical
https://doi.org/10.1016/j.foodchem.2017.02.128 - Manoharan, K.P., Benny, T.K.H. and Yang, D (2005) 'Cycloartane type triterpenoids from the rhizomes of Polygonum bistorta', Phytochemistry, 66(19), pp. 2304-2308. doi:10.1016/j.phytochem.2005.07.008 Preclinical
https://doi.org/10.1016/j.phytochem.2005.07.008 - Liu, X., Hua, H., Liu, J., Chen, F. and Wu, L (2006) 'A new tannin-related compound from the rhizome of Polygonum bistorta L', Journal of Asian Natural Products Research, 8(4), pp. 299-302. doi:10.1080/10286020500034956 Preclinical
https://doi.org/10.1080/10286020500034956 - Yang, W., Qian, Z., Wu, M., Gao, J., Huang, Q., Zou, Y. and Tang, D (2023) 'Online microextraction coupled with HPLC-ABTS for rapid analysis of antioxidants from the root of Polygonum bistorta', Evidence-Based Complementary and Alternative Medicine, 2023, pp. 7496848. doi:10.1155/2023/7496848 Preclinical
https://doi.org/10.1155/2023/7496848 - Bauer, I., Rimbach, G., Nevermann, S., Neuhauser, C., Schwarzinger, B., Schwarzinger, C., Weghuber, J. and Luersen, K (2023) 'In-vitro antidiabetic activity of a Bistorta officinalis Delarbre root extract can not be confirmed in the in-vivo models hen's egg test and Drosophila melanogaster', Journal of Physiology and Pharmacology, 74(1). doi:10.26402/jpp.2023.1.04 Preclinical
https://doi.org/10.26402/jpp.2023.1.04 - Intisar, A., Zhang, L., Luo, H., Kiazolu, J.B., Zhang, R. and Zhang, W (2012) 'Anticancer constituents and cytotoxic activity of methanol-water extract of Polygonum bistorta L', African Journal of Traditional, Complementary and Alternative Medicines, 10(1), pp. 53-59. doi:10.4314/ajtcam.v10i1.9 Preclinical
https://doi.org/10.4314/ajtcam.v10i1.9 - Liu, Y., Weng, Y., Lin, H., Tang, S., Chen, C., Liang, C., Ku, C. and Lin, J (2017) 'Aqueous extract of Polygonum bistorta modulates proteostasis by ROS-induced ER stress in human hepatoma cells', Scientific Reports, 7, pp. 41437. doi:10.1038/srep41437 Preclinical
https://doi.org/10.1038/srep41437 - Khan, S., Arshad, S., Masood, I., Arif, A., Abbas, S., Qureshi, A.W., Parveen, A. and Seemab Ameen, Z (2023) 'GC-MS Analysis of Persicaria bistorta: Uncovering the Molecular Basis of Its Traditional Medicinal Use', Applied Biochemistry and Biotechnology, 196(4), pp. 2270--2288. doi:10.1007/s12010-023-04580-0 Traditional / reference
https://doi.org/10.1007/s12010-023-04580-0 - WebMD (n.d.) 'Bistort: Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews'. Available at: https://www.webmd.com/vitamins/ai/ingredientmono-75/bistort Traditional / reference
https://www.webmd.com/vitamins/ai/ingredientmono-75/bistort - (2020) 'Antibacterial and anti-inflammatory activity of bistort (Bistorta officinalis) aqueous extract and its major components - justification of the usage of the medicinal plant material as a traditional topical agent', Journal of Ethnopharmacology. doi:10.1016/j.jep.2020.113077 Traditional / reference
https://doi.org/10.1016/j.jep.2020.113077
- Orlova, A. and Kysil, E. and Tsvetkova, E. and Meshalkina, D. and Whaley, A. and Whaley, A.O. and Laub, A. and Francioso, A. and Babich, O. and Wessjohann, L.A. and Mosca, L. and Frolov, A. and Povydysh, M (2022) 'Phytochemical Characterization of Water Avens (Geum rivale L.) Extracts: Structure Assignment and Biological Activity of the Major Phenolic Constituents', Plants (Basel), 11(21), pp. 2859. doi:10.3390/plants11212859 Preclinical
https://doi.org/10.3390/plants11212859 - Owczarek, A. and Gudej, J (2013) 'Investigation into biologically active constituents of Geum rivale L', Acta Poloniae Pharmaceutica, 70(1), pp. 111-114. Preclinical
https://scholar.google.com/scholar?q=Investigation%20into%20biologically%20active%20constituents%20of%20Geum%20rivale%20L. - Panizzi, L. and Catalano, S. and Miarelli, C. and Cioni, P.L. and Campeol, E (2000) 'In vitro antimicrobial activity of extracts and isolated constituents of Geum rivale', Phytotherapy Research, 14(7), pp. 561-563. doi:10.1002/1099-1573(200011)14:7<561::aid-ptr651>3.0.co;2-h Preclinical
https://doi.org/10.1002/1099-1573(200011)14:7<561::aid-ptr651>3.0.co;2-h - Ming, D. and Jiang, R. and But, P.P. and Towers, G.H.N. and Yu, D (2002) 'A new compound from Geum rivale L', Journal of Asian Natural Products Research, 4(3), pp. 217-220. doi:10.1080/10286020290024022 Preclinical
https://doi.org/10.1080/10286020290024022 - Owczarek, A. and Gudej, J. and Kicel, A (2013) 'Composition of essential oil from aerial and underground parts of Geum rivale and G. urbanum growing in Poland', Natural Product Communications, 8(4), pp. 505-508. doi:10.1177/1934578x1300800425 Preclinical
https://doi.org/10.1177/1934578x1300800425 - Bunse, M. and Lorenz, P. and Stintzing, F.C. and Kammerer, D.R (2021) 'Insight into the Secondary Metabolites of Geum rivale L. and Geum urbanum L. Seeds (Rosaceae)', Plants (Basel), 10(6), pp. 1219. doi:10.3390/plants10061219 Preclinical
https://doi.org/10.3390/plants10061219 - Tunon, H. and Olavsdotter, C. and Bohlin, L (1995) 'Evaluation of anti-inflammatory activity of some Swedish medicinal plants. Inhibition of prostaglandin biosynthesis and PAF-induced exocytosis', Journal of Ethnopharmacology, 48(2), pp. 61-76. doi:10.1016/0378-8741(95)01285-l Preclinical
https://doi.org/10.1016/0378-8741(95)01285-l - Lamaison, J.L. and Carnat, A. and Petitjean-Freytet, C (1990) 'Tannin content and inhibiting activity of elastase in Rosaceae', Annales Pharmaceutiques Francaises, 48(6), pp. 335-340. Meta-analysis / review
https://scholar.google.com/scholar?q=Tannin%20content%20and%20inhibiting%20activity%20of%20elastase%20in%20Rosaceae - Blinova, K.F (1954) 'Anatomical structure of Geum urbanum and Geum rivale and localization of tannins', Aptechnoe Delo, 3(2), pp. 30-35. Traditional / reference
https://scholar.google.com/scholar?q=Anatomical%20structure%20of%20Geum%20urbanum%20and%20Geum%20rivale%20and%20localization%20of%20tannins - Kosmala, M. and Milala, J. and Karlinska, E (2025) 'Ellagitannins and Other Polyphenols Along with Dietary Components of the Rosaceae Medicinal Plants', Molecules, 30(23), pp. 4574. doi:10.3390/molecules30234574 Meta-analysis / review
https://doi.org/10.3390/molecules30234574 - Bunse, M. and Mailander, L.K. and Lorenz, P. and Stintzing, F.C. and Kammerer, D.R (2022) 'Evaluation of Geum urbanum L. Extracts with Respect to Their Antimicrobial Potential', Chemistry and Biodiversity, 19(2), pp. e202100850. doi:10.1002/cbdv.202100850 Preclinical
https://doi.org/10.1002/cbdv.202100850 - Gunther, I. and Rimbach, G. and Nevermann, S. and Neuhauser, C. and Stadlbauer, V. and Schwarzinger, B. and Schwarzinger, C. and Ipharraguerre, I.R. and Weghuber, J. and Luersen, K (2021) 'Avens Root (Geum urbanum L.) Extract Discovered by Target-Based Screening Exhibits Antidiabetic Activity in the Hen's Egg Test Model', Frontiers in Pharmacology, 12, pp. 794404. doi:10.3389/fphar.2021.794404 Preclinical
https://doi.org/10.3389/fphar.2021.794404 - Zaharieva, M.M. and Dimitrova, L.L. and Philipov, S. and Nikolova, I. and Vilhelmova, N. and Grozdanov, P. and Nikolova, N. and Popova, M. and Bankova, V. and Konstantinov, S.M. and Zheleva-Dimitrova, D. and Najdenski, H.M (2021) 'In Vitro Antineoplastic and Antiviral Activity and In Vivo Toxicity of Geum urbanum L. Extracts', Molecules, 27(1), pp. 245. doi:10.3390/molecules27010245 Preclinical
https://doi.org/10.3390/molecules27010245 - Dimitrova, L. and Zaharieva, M.M. and Tserovska, L. and Popova, M. and Bankova, V. and Najdenski, H (2025) 'Inhibition of the MRSA Biofilm Formation and Skin Antineoplastic Activity of Ethyl Acetate Roots and Aerial Parts Extracts from Geum urbanum L', Antibiotics (Basel), 14(7), pp. 627. doi:10.3390/antibiotics14070627 Preclinical
https://doi.org/10.3390/antibiotics14070627 - Dimitrova, L. and Zaharieva, M.M. and Popova, M. and Kostadinova, N. and Tsvetkova, I. and Bankova, V. and Najdenski, H (2017) 'Antimicrobial and antioxidant potential of different solvent extracts of the medicinal plant Geum urbanum L', Chemistry Central Journal, 11(1), pp. 113. doi:10.1186/s13065-017-0343-8 Preclinical
https://doi.org/10.1186/s13065-017-0343-8 - Ton That, Q. and Nguyen Thien, T.V. and Dang, H.P. and Le Hoan, N. and Vo, L.K.T. and Nguyen, M.H.D. and Ngu, N.T. and Nguyen, T.S. and Hansen, P.E (2018) 'Chemical constituents of Geum urbanum L. roots', Natural Product Research, 32(21), pp. 2529-2534. doi:10.1080/14786419.2018.1425844 Preclinical
https://doi.org/10.1080/14786419.2018.1425844 - Piwowarski, J.P. and Granica, S. and Zwierzynska, M. and Stefanska, J. and Schopohl, P. and Melzig, M.F. and Kiss, A.K (2014) 'Role of human gut microbiota metabolism in the anti-inflammatory effect of traditionally used ellagitannin-rich plant materials', Journal of Ethnopharmacology, 155(1), pp. 801-809. doi:10.1016/j.jep.2014.06.032 Preclinical
https://doi.org/10.1016/j.jep.2014.06.032
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.