Omnia SanaPlant Comparison
Witch Hazel vs Common Comfrey
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
Witch Hazel and Common Comfrey: they share 5 indicated uses (arthritis / joint pain, bruising, inflammation (general), …); 2 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Witch Hazel | Common Comfrey | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 5/10 | 5/10 | Comparable evidence |
| Bruising | 1/10 | 8/10 | Stronger for Common Comfrey |
| Inflammation (general) | 5/10 | 5/10 | Comparable evidence |
| Skin irritation | 5/10 | 5/10 | Comparable evidence |
| Wounds | 1/10 | 5/10 | Stronger for Common Comfrey |
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
The principal astringent and anti-inflammatory constituents.
Antioxidant and anti-inflammatory constituents of the bark and leaf.
The key cell-proliferative constituent underlying comfrey's wound-healing reputation.
Contribute to the soothing, demulcent texture of the leaf and root.
Contribute to antioxidant and anti-inflammatory activity.
Hepatotoxic constituents naturally present in the whole plant; the reason internal use is not recommended and processed/detoxified extracts are used for research.
Pharmacological Actions
Anti-inflammatory and antioxidant (supports irritated/atopic skin); Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically; Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Traditional & Indicated Uses
inferred from anti-inflammatory action
Vulnerary for minor wounds, bruises and insect bites
inferred from anticancer action
Relief of haemorrhoid symptoms (astringent and anti-inflammatory)
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
Astringent for skin irritation and minor inflammation of the skin and oral mucosa (tannins), applied topically
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-oedematous action
Safety, Cautions & Contraindications
For topical use. Do not apply to deep wounds, serious burns or severe rectal bleeding - these need medical care.
Big headline: Comfrey naturally contains pyrrolizidine alkaloids (PAs), which can seriously harm the liver if taken internally (Staiger, 2012; EMA, 2015). • Do not ingest comfrey (no teas, no internal tinctures, no capsules), because PA exposure from internal use is the main safety problem (Staiger, 2012; Bach et al., 1990). • Topical use only, short-term: EU herbal guidance describes comfrey root preparations for minor bruises and sprains in adults, and recommends limited duration (commonly up to about 10 days) (EMA, 2015; EMA/HMPC, 2024). • Do not apply to broken skin (open wounds, damaged/irritated skin) and avoid eyes/mucous membranes (EMA/HMPC, 2024). • Pregnancy & breastfeeding: best avoided (not enough safety margin for medicinal use) (EMA/HMPC, 2024). • Children/adolescents: not recommended for medicinal topical use in EU monograph context (EMA/HMPC, 2024). • If you have liver disease or take medicines that stress the liver, skip comfrey completely (risk management logic based on PA concern) (Staiger, 2012; EMA, 2015). • Skin reactions: mild rash/irritation can occur; stop if it irritates (Smith and Jacobson, 2011).
Duke (2002) classifies common comfrey (Symphytum officinale) with anti-inflammatory and wound-healing properties, supported by allantoin content (promotes cell proliferation). However, comfrey also contains hepatotoxic pyrrolizidine alkaloids. Internal use is no longer recommended, and Commission E approved only external use. Duke emphasizes that pyrrolizidine alkaloids are cumulative hepatotoxins associated with veno-occlusive disease, and prolonged or internal use is contraindicated (Duke, 2002).
External Ids
Botanical Description
Large, multi-stemmed deciduous shrub or small tree with broad, oval, wavy-toothed leaves, asymmetrical at the base. Unusually, it flowers in late autumn to winter after the leaves have fallen, bearing clusters of small, spidery, bright yellow flowers with narrow, crinkled, ribbon-like petals. The woody seed capsule matures the following autumn and explosively ejects its seeds ('snapping hazelnut').[14]
Robust, hairy perennial herb (Boraginaceae), 60-120 cm tall, with a thick, black-skinned, mucilaginous taproot. Leaves are large, broad, lance-shaped and bristly-hairy, running down the stem as raised wings (decurrent) - the leaf base's smooth, untoothed margin is a key feature distinguishing it from toxic foxglove. Drooping clusters of tubular, bell-shaped flowers are cream, pink or purple depending on variety.[11]
Habitat
Harvesting
Bark is stripped from branches (not the main trunk, to avoid harming the plant) and leaves are picked in summer; both are dried for use, or steam-distilled together with twigs to produce distilled witch-hazel water, the most common commercial form.[14]
Leaves are cut during the growing season (before flowering is often preferred for lower pyrrolizidine-alkaloid content); root is dug in autumn or spring from mature plants.[11]
Traditional Uses
Witch hazel has a long Native American and, after adoption by European settlers, worldwide reputation as a topical astringent and anti-inflammatory remedy for skin irritation, minor wounds, bruises, insect bites and haemorrhoids, and as a soothing wash for irritated skin and mucous membranes.[14]
Comfrey has one of the strongest traditional reputations of any European herb for wound healing and bone/tissue repair - the folk names 'knitbone' and 'boneset' reflect this - owing to its high allantoin content, which stimulates cell proliferation. Because the plant also contains hepatotoxic pyrrolizidine alkaloids, modern regulatory use is restricted to topical preparations only, for minor bruises and sprains, and internal use (teas, tinctures) is no longer recommended.[11]
Preparations
The officially recognised European herbal-monograph preparation, for minor bruises and sprains, short-term use only.
Dosage
The EU herbal monograph on Hamamelis virginiana L., cortex gives, for cutaneous use, tincture at a strength corresponding to 5-10% in semi-solid preparations several times daily, or a dry extract (5-7.7:1, ethanol 30% m/m) at a strength corresponding to 1.3% as an ointment several times daily; for anorectal use, a decoction of 5-10 g per 250 mL up to 3 times daily as impregnated dressings. For topical use only. Educational reference only, not a prescription.
EU herbal-monograph guidance describes comfrey root preparations applied topically for minor bruises and sprains in adults, for a limited duration (commonly up to about 10 days); do not apply to broken skin or near eyes/mucous membranes. Comfrey must never be taken internally (no teas, tinctures or capsules) because of its pyrrolizidine alkaloid content. Educational reference only, not a prescription.
References
Lookalikes Review
Dangerous Lookalikes
Not documented
References & Sources
- Skowrońska, W., Pawłowska, K.A., Obrębski, M., Piwowarski, J.P. et al (2025) 'Chemical composition, skin microbiota metabolism, antimicrobial potential and anti-inflammatory properties of witch hazel bark (Hamamelis virginiana L.)', Journal of Ethnopharmacology, 353(Pt B), pp. 120433. doi:10.1016/j.jep.2025.120433 Preclinical
https://doi.org/10.1016/j.jep.2025.120433 - Piazza, S., Martinelli, G., Vrhovsek, U., Masuero, D. et al (2022) 'Anti-Inflammatory and Anti-Acne Effects of Hamamelis virginiana Bark in Human Keratinocytes', Antioxidants (Basel), 11(6), pp. 1119. doi:10.3390/antiox11061119 Preclinical
https://doi.org/10.3390/antiox11061119 - Janarthanam, V.A., Rajan, P.S.S., Panda, S.P., Panigrahy, U.P. et al (2025) 'Hamamelitannin from Hamamelis virginiana Attenuates Ethanol-Induced Oxidative and Inflammatory Responses in Danio rerio Larvae', Molecular Biotechnology, 68(5), pp. 2369-2385. doi:10.1007/s12033-025-01502-9 Preclinical
https://doi.org/10.1007/s12033-025-01502-9 - Piazza, S., Martinelli, G., Magnavacca, A., Fumagalli, M., Pozzoli, C., Terno, M., Canilli, L., Angarano, M., Maranta, N., Dell'Agli, M. and Sangiovanni, E (2022) 'Unveiling the Ability of Witch Hazel (Hamamelis virginiana L.) Bark Extract to Impair Keratinocyte Inflammatory Cascade Typical of Atopic Eczema', International Journal of Molecular Sciences, 23(16), pp. 9279. doi:10.3390/ijms23169279 Preclinical
https://doi.org/10.3390/ijms23169279 - Amendola, I., Viegas, D.J., Freitas, E.T., Oliveira, J.R., Santos, J.G., Oliveira, F.E., Lagareiro Netto, A.A., Marcucci, M.C., Oliveira, L.D. and Back-Brito, G.N (2024) 'Hamamelis virginiana L. extract presents antimicrobial and antibiofilm effects, absence of cytotoxicity, anti-inflammatory action, and potential to fight infections through the nitric oxide production by macrophages', Anais da Academia Brasileira de Ciencias, 96(1), pp. e20200031. doi:10.1590/0001-3765202320200031 Preclinical
https://doi.org/10.1590/0001-3765202320200031 - Habtemariam, S (2002) 'Hamamelitannin from Hamamelis virginiana inhibits the tumour necrosis factor-alpha (TNF)-induced endothelial cell death in vitro', Toxicon, 40(1), pp. 83-88. doi:10.1016/s0041-0101(01)00195-7 Preclinical
https://doi.org/10.1016/s0041-0101(01)00195-7 - Natella, F., Guantario, B., Ambra, R., Ranaldi, G., Intorre, F., Burki, C. and Canali, R (2021) 'Human Metabolites of Hamamelis virginiana (Extract) Modulate Fibroblast Extracellular Matrix Components in Response to UV-A Irradiation', Frontiers in Pharmacology, 12, pp. 747638. doi:10.3389/fphar.2021.747638 Randomized trial
https://doi.org/10.3389/fphar.2021.747638 - Dauer, A., Rimpler, H. and Hensel, A (2003) 'Polymeric proanthocyanidins from the bark of Hamamelis virginiana', Planta Medica, 69(1), pp. 89-91. doi:10.1055/s-2003-37022 Preclinical
https://doi.org/10.1055/s-2003-37022 - Vennat, B., Pourrat, H., Pouget, M.P., Gross, D. and Pourrat, A (1988) 'Tannins from Hamamelis virginiana: identification of proanthocyanidins and hamamelitannin quantification in leaf, bark, and stem extracts', Planta Medica, 54(5), pp. 454-457. doi:10.1055/s-2006-962499 Preclinical
https://doi.org/10.1055/s-2006-962499 - Duckstein, S.M., Lorenz, P. and Stintzing, F.C (2012) 'Conversion of phenolic constituents in aqueous Hamamelis virginiana leaf extracts during fermentation', Phytochemical Analysis, 23(6), pp. 588-597. doi:10.1002/pca.2359 Preclinical
https://doi.org/10.1002/pca.2359 - Sanchez-Tena, S., Fernandez-Cachon, M.L., Carreras, A., Mateos-Martin, M.L., Costoya, N., Moyer, M.P., Nunez, M.J., Torres, J.L. and Cascante, M (2012) 'Hamamelitannin from witch hazel (Hamamelis virginiana) displays specific cytotoxic activity against colon cancer cells', Journal of Natural Products, 75(1), pp. 26-33. doi:10.1021/np200426k Preclinical
https://doi.org/10.1021/np200426k - Theisen, L.L., Erdelmeier, C.A.J., Spoden, G.A., Boukhallouk, F., Sausy, A., Florin, L. and Muller, C.P (2014) 'Tannins from Hamamelis virginiana bark extract: characterization and improvement of the antiviral efficacy against influenza A virus and human papillomavirus', PLoS One, 9(1), pp. e88062. doi:10.1371/journal.pone.0088062 Preclinical
https://doi.org/10.1371/journal.pone.0088062 - Cheesman, M.J., Alcorn, S.R., White, A. and Cock, I.E (2023) 'Hamamelis virginiana L. Leaf Extracts Inhibit the Growth of Antibiotic-Resistant Gram-Positive and Gram-Negative Bacteria', Antibiotics, 12(7), pp. 1195. doi:10.3390/antibiotics12071195 Preclinical
https://doi.org/10.3390/antibiotics12071195 - European Medicines Agency (HMPC) (n.d.) 'European Union herbal monograph on Hamamelis virginiana L., cortex/folium/aqua (Hamamelidis cortex)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/hamamelidis-cortex Traditional / reference
https://www.ema.europa.eu/en/medicines/herbal/hamamelidis-cortex - (2025) 'Hamamelis virginiana L. in Skin Care: A Review of Its Pharmacological Properties and Cosmetological Applications', Molecules. doi:10.3390/molecules30132744 Randomized trial
https://doi.org/10.3390/molecules30132744 - Herbal Reality (n.d.) 'Witch Hazel (Hamamelis virginiana): Benefits, Safety, Uses'. Available at: https://www.herbalreality.com/herb/witch-hazel/ Traditional / reference
https://www.herbalreality.com/herb/witch-hazel/
- Syarifah, A.N., Suryadi, H., Hayun, H., Simamora, A. and others (2023) 'Detoxification of comfrey (Symphytum officinale L.) extract using natural deep eutectic solvent (NADES) and evaluation of its anti-inflammatory, antioxidant, and hepatoprotective properties', Frontiers in Pharmacology, 14, pp. 1012716. doi:10.3389/fphar.2023.1012716 Preclinical
https://doi.org/10.3389/fphar.2023.1012716 - Melnyk, N., Popowski, D., Strawa, J.W., Przygodzinska, K. and others (2023) 'Skin microbiota metabolism of natural products from comfrey root (Symphytum officinale L.)', Journal of Ethnopharmacology, 318(Pt B), pp. 116968. doi:10.1016/j.jep.2023.116968 Preclinical
https://doi.org/10.1016/j.jep.2023.116968 - Trifan, A., Skalicka-Wozniak, K., Granica, S., Czerwinska, M.E. and others (2020) 'Symphytum officinale L.: Liquid-liquid chromatography isolation of caffeic acid oligomers and evaluation of their influence on pro-inflammatory cytokine release in LPS-stimulated neutrophils', Journal of Ethnopharmacology, 262, pp. 113169. doi:10.1016/j.jep.2020.113169 Preclinical
https://doi.org/10.1016/j.jep.2020.113169 - Brown, A.W., Stegelmeier, B.L., Colegate, S.M., Gardner, D.R. and others (2016) 'The comparative toxicity of a reduced, crude comfrey (Symphytum officinale) alkaloid extract and the pure, comfrey-derived pyrrolizidine alkaloids, lycopsamine and intermedine in chicks (Gallus gallus domesticus)', Journal of Applied Toxicology, 36(5), pp. 716-725. doi:10.1002/jat.3205 Preclinical
https://doi.org/10.1002/jat.3205 - Trifan, A., Wolfram, E., Esslinger, N., Grubelnik, A. and others (2021) 'Globoidnan A, rabdosiin and globoidnan B as new phenolic markers in European-sourced comfrey (Symphytum officinale L.) root samples', Phytochemical Analysis, 32(4), pp. 482-494. doi:10.1002/pca.2996 Preclinical
https://doi.org/10.1002/pca.2996 - Nastic, N., Borras-Linares, I., Lozano-Sanchez, J., Svarc-Gajic, J. and others (2020) 'Comparative Assessment of Phytochemical Profiles of Comfrey (Symphytum officinale L.) Root Extracts Obtained by Different Extraction Techniques', Molecules, 25(4), pp. 837. doi:10.3390/molecules25040837 Preclinical
https://doi.org/10.3390/molecules25040837 - Frost, R., MacPherson, H. and O'Meara, S (2013) 'A critical scoping review of external uses of comfrey (Symphytum spp.)', Complementary Therapies in Medicine, 21(6), pp. 724-745. doi:10.1016/j.ctim.2013.09.009 Meta-analysis / review
https://doi.org/10.1016/j.ctim.2013.09.009 - Trifan, A., Opitz, S.E.W., Josuran, R., Grubelnik, A. and others (2018) 'Is comfrey root more than toxic pyrrolizidine alkaloids? Salvianolic acids among antioxidant polyphenols in comfrey (Symphytum officinale L.) roots', Food and Chemical Toxicology, 112, pp. 178-187. doi:10.1016/j.fct.2017.12.051 Preclinical
https://doi.org/10.1016/j.fct.2017.12.051 - Dey, D., Jingar, P., Agrawal, S., Shrivastava, V. and others (2019) 'Symphytum officinale augments osteogenesis in human bone marrow-derived mesenchymal stem cells in vitro as they differentiate into osteoblasts', Journal of Ethnopharmacology, 248, pp. 112329. doi:10.1016/j.jep.2019.112329 Preclinical
https://doi.org/10.1016/j.jep.2019.112329 - Kuchta, K. and Schmidt, M (2020) 'Safety of medicinal comfrey cream preparations (Symphytum officinale s.l.): The pyrrolizidine alkaloid lycopsamine is poorly absorbed through human skin', Regulatory Toxicology and Pharmacology, 118, pp. 104784. doi:10.1016/j.yrtph.2020.104784 Preclinical
https://doi.org/10.1016/j.yrtph.2020.104784 - European Medicines Agency (2011) 'European Union herbal monograph on Symphytum officinale L., radix'. Traditional / reference
https://scholar.google.com/scholar?q=European%20Union%20herbal%20monograph%20on%20Symphytum%20officinale%20L.%2C%20radix - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Staiger, C (2012) 'Comfrey: a clinical overview', 26(10), pp. 1441--1448. doi:10.1002/ptr.4612 Randomized trial
https://doi.org/10.1002/ptr.4612 - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition - Vithayathil, M.K. and Edwards, M (2016) 'Comfrey herbal remedy causing second-degree heart block: do not be outfoxed by digitalis', BMJ Case Reports, 2016, pp. bcr2016216995. doi:10.1136/bcr-2016-216995 Clinical study
https://doi.org/10.1136/bcr-2016-216995 - Lin, C.C. and Yang, C.C. and Phua, D.H. and Deng, J.F. and Lu, L.H (2010) 'An outbreak of foxglove leaf poisoning', Journal of the Chinese Medical Association, 73(2), pp. 97-100. doi:10.1016/S1726-4901(10)70009-5 Clinical study
https://doi.org/10.1016/S1726-4901(10)70009-5 - Woodland Trust (2024) 'Foxglove (Digitalis purpurea)'. Available at: https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/plants/wild-flowers/foxglove/ Traditional / reference
https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/plants/wild-flowers/foxglove/
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.