Plant Comparison
Water avens vs Field scabious
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
Water avens and Field scabious: they share 4 indicated uses (inflammation (general), infection (general), wounds, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Water avens | Field scabious | Verdict |
|---|---|---|---|
| Inflammation (general) | 2/10 | 7/10 | Stronger for Field scabious |
| Infection (general) | 2/10 | 2/10 | Comparable evidence |
| Wounds | 2/10 | 2/10 | Comparable evidence |
| Skin irritation | 2/10 | 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
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.
Chlorogenic, cryptochlorogenic and dicaffeoylquinic acids and caffeoylhydrocitric acid (antioxidant).
C-glycosidic flavones such as isovitexin and related flavonoids.
Saponin glycosides (knautiosides) characteristic of the plant and the Caprifoliaceae family.
Pharmacological Actions
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 'blood purifier' (depurative) for skin complaints; the classic use of field scabious.
Knautia and related Caprifoliaceae extracts inhibit inflammatory mediators (COX/LOX).
Traditional & Indicated Uses
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).
Traditional remedy for eczema, itching and skin complaints; anti-acne activity of Knautia extracts.
Anti-acne activity of Knautia species extracts (antibacterial, anti-inflammatory).
inferred from traditional external use on cuts and sores
Safety, Cautions & Contraindications
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.
Very little is known about the safety of field scabious and there are no clinical data; avoid medicinal doses in pregnancy and breastfeeding and use only modest amounts.
Most pharmacological data come from closely related Caprifoliaceae (genus Knautia, Scabiosa, Dipsacus) rather than Knautia arvensis itself; apply to field scabious with caution.
External Ids
Synonyms
Botanical Description
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]
A hairy perennial herb of the honeysuckle family (formerly Dipsacaceae), 25-100 cm tall, growing from a stout rootstock. The stems are roughly hairy and bear opposite leaves that are variable - the lower ones often lyre-shaped or pinnately lobed, the upper deeply cut. The flowers are massed into flat, domed pincushion heads about 3-4 cm across, lilac to bluish-violet, with the outer florets enlarged; the heads are carried on long stalks and, unlike true scabious (Scabiosa), the receptacle is hairy rather than scaly. It flowers through summer and is a favourite of bees and butterflies.[1]
Habitat
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]
Dry grassland, meadows, pastures, dry hills, roadside banks, field margins and open woods, on well-drained and often calcareous soils across Europe and into western Asia and parts of Africa. A characteristic plant of unimproved dry meadows.[1]
Harvesting
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]
The flowering aerial parts (leaves, stems, flower heads) are gathered in summer while in flower and dried; the root is also used. Best cut from established plants in dry grassland.[1]
Traditional Uses
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]
Field scabious has a European folk-medicine reputation chiefly as a remedy for skin complaints - eczema, itching, scabies (the name 'scabious' comes from its use against 'the scab'), cuts and sores - taken internally as a 'blood purifier' (alterative/depurative) and applied externally as a wash or poultice. It has also been used for coughs and sore throats. The plant is rich in phenolic acids, flavonoids and saponins; the closely related genera Knautia, Scabiosa and Dipsacus in the honeysuckle family share this chemistry and a tradition of use in skin disease and inflammation.[3, 4]
Preparations
References
Drug Class Interactions
Not documented
Pairings
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]
Not documented
Lookalikes Review
References & Sources
- 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
- Karalija, E. and Muratovic, E. and Tarkowski, P. and Zeljkovic, S.C (2017) 'Variation in Phenolic Composition of Knautia arvensis in Correlation with Geographic Area and Plant Organ', Natural Product Communications, 12(4), pp. 545-548. doi:10.1177/1934578x1701200421 Preclinical
https://doi.org/10.1177/1934578x1701200421 - Moldoch, J. and Szajwaj, B. and Masullo, M. and Pecio, L. and Oleszek, W. and Piacente, S. and Stochmal, A (2011) 'Phenolic constituents of Knautia arvensis aerial parts', Natural Product Communications, 6(11), pp. 1627-1630. doi:10.1177/1934578x1100601117 Preclinical
https://doi.org/10.1177/1934578x1100601117 - Plouvier, V (1971) 'Research on heterosides: knautioside and saponosides from Knautia arvensis and related glycosides', Comptes Rendus de l'Academie des Sciences, Serie D, 272(10), pp. 1443-1446. Preclinical
https://scholar.google.com/scholar?q=Research%20on%20heterosides%3A%20knautioside%20and%20saponosides%20from%20Knautia%20arvensis%20and%20related%20glycosides - Chrzaszcz, M. and Miazga-Karska, M. and Klimek, K. and Dybowski, M.P. and Typek, R. and Tchorzewska, D. and Dos Santos Szewczyk, K (2023) 'The Anti-Acne Potential and Chemical Composition of Knautia Species (Caprifoliaceae) Extracts', International Journal of Molecular Sciences, 24(11), pp. 9188. doi:10.3390/ijms24119188 Preclinical
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https://doi.org/10.3390/molecules28093754 - Pinto, D.C.G.A. and Rahmouni, N. and Beghidja, N. and Silva, A.M.S (2018) 'Scabiosa Genus: A Rich Source of Bioactive Metabolites', Medicines (Basel), 5(4), pp. 110. doi:10.3390/medicines5040110 Meta-analysis / review
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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.