Omnia SanaPlant Comparison
Meadowsweet 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
Meadowsweet and Common Comfrey: they share 8 indicated uses (arthritis / joint pain, back pain, headache, …); 2 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Meadowsweet | Common Comfrey | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 5/10 | Stronger for Common Comfrey |
| Back pain | 1/10 | 5/10 | Stronger for Common Comfrey |
| Headache | 1/10 | 5/10 | Stronger for Common Comfrey |
| Inflammation (general) | 1/10 | 5/10 | Stronger for Common Comfrey |
| Pain (general) | 1/10 | 8/10 | Stronger for Common Comfrey |
| Skin irritation | 1/10 | 5/10 | Stronger for Common Comfrey |
| Swelling / fluid retention | 1/10 | 5/10 | Stronger for Common Comfrey |
| 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
Historically the source of aspirin's chemical inspiration; provide the plant's analgesic and anti-inflammatory activity, buffered by co-occurring mucilage and tannins.
Antioxidant constituents contributing to the plant's anti-inflammatory and gastroprotective effects.
Contribute to astringency and the characteristic sweet almond-like fragrance.
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
Traditional & Indicated Uses
inferred from gastroprotective action
inferred from anti-inflammatory action
inferred from anticancer action
inferred from gastroprotective action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from antispasmodic action
inferred from antispasmodic action
inferred from anti-inflammatory action
inferred from diuretic action
inferred from diuretic action
inferred from diuretic action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-oedematous action
Safety, Cautions & Contraindications
Generally safe in normal culinary and medicinal doses. Avoid in salicylate sensitivity or aspirin allergy. Not recommended for children with viral illnesses (Reye's syndrome risk, as with other salicylate-containing plants). Avoid during pregnancy and breastfeeding.
Duke (2002) rates meadowsweet as ++ and notes analgesic, antiulcer, antirheumatic, astringent, and anti-aggregant activities at the experimental level (score 1). The plant is historically significant as a precursor to aspirin — salicylate compounds in meadowsweet were originally used to derive acetylsalicylic acid. Unlike aspirin, meadowsweet's salicylates are combined with protective mucilaginous compounds that may reduce gastric irritation. Duke notes that individuals with aspirin (salicylate) sensitivity should avoid meadowsweet; the plant also has anticoagulant properties that may interact with blood-thinning medications (Duke, 2002).
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
Tall, moisture-loving perennial herb with pinnately compound leaves, dark green above and whitish-downy beneath, the leaflets sharply toothed. Dense, fluffy, creamy-white flower clusters with a strong, sweet, almond-like fragrance are borne atop reddish, grooved stems.[1]
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
The flowering tops, leaf and stem are cut in summer as the flowers open, when the characteristic salicylate content is highest, and dried in a warm, shaded, airy place.[1]
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
Meadowsweet is historically significant as the plant from which salicylic acid derivatives (the chemical basis of aspirin) were first isolated, and has long been used in European folk medicine as an anti-inflammatory, analgesic and gastroprotective remedy for feverish colds, rheumatic and joint pain, and digestive complaints such as acid reflux and indigestion - notably, its natural mucilage is thought to buffer the gastric irritation associated with isolated salicylates.[1, 4]
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
Dried flower, leaf and stem infused in hot water as a traditional anti-inflammatory and digestive tea.
Tincture (1:5) of the dried aerial parts; single dose 2-4 ml, daily dose 6-12 ml per the EU herbal monograph. Educational reference only, not a prescription.
Concentrated extract studied in vitro and in vivo for anti-inflammatory and gastroprotective activity.
The officially recognised European herbal-monograph preparation, for minor bruises and sprains, short-term use only.
Dosage
The EU herbal monograph gives a single dose of 1.5-6 g of the comminuted herb as an infusion, for a daily dose of 2-18 g, in adults and elderly; a powdered herbal substance at 250-500 mg per dose (250-1500 mg daily) and a 1:5 tincture at 2-4 mL per dose (6-12 mL daily) are also listed. Contraindicated in hypersensitivity to salicylates. For rheumatic-type complaints, not to be used for more than 4 weeks. Not recommended under 18 years. 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
- Samardžić, S., Arsenijević, J., Božić, D., Milenković, M. et al (2017) 'Antioxidant, anti-inflammatory and gastroprotective activity of Filipendula ulmaria (L.) Maxim. and Filipendula vulgaris Moench', Journal of Ethnopharmacology, 213, pp. 132-137. doi:10.1016/j.jep.2017.11.013 Preclinical
https://doi.org/10.1016/j.jep.2017.11.013 - Andonova, T., Muhovski, Y., Apostolova, E., Naimov, S. et al (2024) 'DNA-Protective, Antioxidant and Anti-Carcinogenic Potential of Meadowsweet (Filipendula ulmaria) Dry Tincture', Antioxidants (Basel), 13(10), pp. 1200. doi:10.3390/antiox13101200 Preclinical
https://doi.org/10.3390/antiox13101200 - Van der Auwera, A., Peeters, L., Foubert, K., Piazza, S. et al (2023) 'In Vitro Biotransformation and Anti-Inflammatory Activity of Constituents and Metabolites of Filipendula ulmaria', Pharmaceutics, 15(4), pp. 1291. doi:10.3390/pharmaceutics15041291 Preclinical
https://doi.org/10.3390/pharmaceutics15041291 - Katanic, J., Boroja, T., Mihailovic, V., Nikles, S., Pan, S., Rosic, G., Selakovic, D., Joksimovic, J., Mitrovic, S. and Bauer, R (2016) 'In vitro and in vivo assessment of meadowsweet (Filipendula ulmaria) as anti-inflammatory agent', Journal of Ethnopharmacology, 193, pp. 627-636. doi:10.1016/j.jep.2016.10.015 Preclinical
https://doi.org/10.1016/j.jep.2016.10.015 - Samardzic, S., Tomic, M., Pecikoza, U., Stepanovic-Petrovic, R. and Maksimovic, Z (2016) 'Antihyperalgesic activity of Filipendula ulmaria (L.) Maxim. and Filipendula vulgaris Moench in a rat model of inflammation', Journal of Ethnopharmacology, 193, pp. 652-656. doi:10.1016/j.jep.2016.10.024 Preclinical
https://doi.org/10.1016/j.jep.2016.10.024 - Katanic, J., Matic, S., Pferschy-Wenzig, E., Kretschmer, N., Boroja, T., Mihailovic, V., Stankovic, V., Stankovic, N., Mladenovic, M., Stanic, S., Mihailovic, M. and Bauer, R (2016) 'Filipendula ulmaria extracts attenuate cisplatin-induced liver and kidney oxidative stress in rats: In vivo investigation and LC-MS analysis', Food and Chemical Toxicology, 99, pp. 86-102. doi:10.1016/j.fct.2016.11.018 Preclinical
https://doi.org/10.1016/j.fct.2016.11.018 - Arsenijevic, N., Selakovic, D., Katanic Stankovic, J.S., Mihailovic, V., Mitrovic, S., Milenkovic, J., Milanovic, P., Vasovic, M., Nikezic, A., Milosevic-Djordjevic, O., Zivanovic, M., Filipovic, N., Jakovljevic, V., Jovicic, N. and Rosic, G (2021) 'Variable neuroprotective role of Filipendula ulmaria extract in rat hippocampus', Journal of Integrative Neuroscience, 20(4), pp. 871-883. doi:10.31083/j.jin2004089 Preclinical
https://doi.org/10.31083/j.jin2004089 - Matic, S., Katanic, J., Stanic, S., Mladenovic, M., Stankovic, N., Mihailovic, V. and Boroja, T (2015) 'In vitro and in vivo assessment of the genotoxicity and antigenotoxicity of the Filipendula hexapetala and Filipendula ulmaria methanol extracts', Journal of Ethnopharmacology, 174, pp. 287-292. doi:10.1016/j.jep.2015.08.025 Preclinical
https://doi.org/10.1016/j.jep.2015.08.025 - Pannakal, S.T., Eilstein, J., Hubert, J., Kotland, A., Prasad, A., Gueguiniat-Prevot, A., Juchaux, F., Beaumard, F., Seru, G., John, S. and Roy, D (2023) 'Rapid Chemical Profiling of Filipendula ulmaria Using CPC Fractionation, 2-D Mapping of 13C NMR Data, and High-Resolution LC-MS', Molecules, 28(17), pp. 6349. doi:10.3390/molecules28176349 Preclinical
https://doi.org/10.3390/molecules28176349 - Valle, M.G., Nano, G.M. and Tira, S (1988) 'The Essential Oil of Filipendula ulmaria', Planta Medica, 54(2), pp. 181-182. doi:10.1055/s-2006-962390 Preclinical
https://doi.org/10.1055/s-2006-962390 - Popowski, D., Zentek, J., Piwowarski, J.P. and Granica, S (2021) 'Gut Microbiota of Pigs Metabolizes Extracts of Filipendula ulmaria and Orthosiphon aristatus - Herbal Remedies Used in Urinary Tract Disorders', Planta Medica, 88(3-04), pp. 254-261. doi:10.1055/a-1647-2866 Preclinical
https://doi.org/10.1055/a-1647-2866 - Bespalov, V.G., Alexandrov, V.A., Semenov, A.L., Kovan'ko, E.G., Ivanov, S.D., Vysochina, G.I., Kostikova, V.A. and Baranenko, D.A (2016) 'The inhibitory effect of meadowsweet (Filipendula ulmaria) on radiation-induced carcinogenesis in rats', International Journal of Radiation Biology, 93(4), pp. 394-401. doi:10.1080/09553002.2016.1257834 Preclinical
https://doi.org/10.1080/09553002.2016.1257834 - European Medicines Agency (HMPC) (2011) 'Community herbal monograph on Filipendula ulmaria (L.) Maxim., herba'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-community-herbal-monograph-filipendula-ulmaria-l-maxim-herba-first-version_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-monograph/final-community-herbal-monograph-filipendula-ulmaria-l-maxim-herba-first-version_en.pdf - Bridge, J (2008) 'The Herbal Remedy Handbook'. Traditional / reference
https://scholar.google.com/scholar?q=The%20Herbal%20Remedy%20Handbook - Drummond, E.M., Harbourne, N., Marete, E., Jacquier, J.C., O'Riordan, D. and Gibney, E.R (2013) 'Inhibition of pro-inflammatory biomarkers in THP1 macrophages by polyphenols derived from chamomile, meadowsweet and willow bark', 27(4), pp. 588--594. Traditional / reference
https://scholar.google.com/scholar?q=Inhibition%20of%20pro-inflammatory%20biomarkers%20in%20THP1%20macrophages%20by%20polyphenols%20derived%20from%20chamomile%2C%20meadowsweet%20and%20willow%20bark - Grieve, M (1931) 'A Modern Herbal'. Traditional / reference
https://scholar.google.com/scholar?q=A%20Modern%20Herbal - 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
- 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.