Omnia SanaPlant Comparison
Chamomile 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
Chamomile and Common Comfrey: they share 8 indicated uses (arthritis / joint pain, back pain, bruising, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Chamomile | Common Comfrey | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 5/10 | 5/10 | Comparable evidence |
| Back pain | 1/10 | 5/10 | Stronger for Common Comfrey |
| Bruising | 1/10 | 8/10 | 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 |
| 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 volatile oil, concentrated in the flower head, gives chamomile its characteristic blue colour (chamazulene) and much of its anti-inflammatory activity (alpha-bisabolol).
Apigenin is considered a key contributor to chamomile's sedative/anxiolytic activity via GABA-A receptor binding.
Minor constituents (e.g. herniarin, umbelliferone) contributing to the mild antispasmodic action.
Contribute to the soothing, demulcent effect on irritated mucous membranes.
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 anti-inflammatory action
inferred from analgesic action
inferred from digestive action
inferred from vulnerary action
inferred from analgesic action
inferred from digestive action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from sedative action
inferred from antispasmodic action
inferred from antispasmodic action
inferred from anti-inflammatory action
inferred from antimicrobial 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 considered very safe when used as tea or topical preparations.Allergy risk: People allergic to ragweed, daisies, or other Asteraceae plants may react (itching, rash).Blood thinners: Chamomile may slightly enhance effects of anticoagulants—use large amounts cautiously.Pregnancy: Normal tea amounts are usually considered safe, but concentrated extracts should be used with caution.Topical use: Rare skin irritation in sensitive individuals.
Duke (2002) rates German chamomile (Matricaria chamomilla) highly for anti-inflammatory, antispasmodic, and wound-healing activities. The essential oil contains the potent anti-inflammatory compound alpha-bisabolol. Chamomile is Commission E approved for digestive complaints and topical wound care. Dose: 3 g dried flower heads per cup of water, three times daily. Alpha-bisabolol is noted as one of the most active natural anti-inflammatory compounds known. Caution: chamomile belongs to the Asteraceae family and can cause allergic reactions in individuals sensitive to ragweed, chrysanthemums, or related plants (Duke, 2002).
Generally very safe. Rare allergic reactions in individuals sensitive to the Asteraceae family (ragweed, chrysanthemums). May cause contact dermatitis with topical essential oil use. Avoid very high doses in pregnancy. Well tolerated by children in appropriate amounts.
Scented mayweed (Matricaria chamomilla) shares the same species as German chamomile (see German Chamomile entry above). Duke (2002) provides the same clinical support: Commission E approves it for dyspeptic complaints (orally) and skin and mucous membrane inflammation (topically). Anti-inflammatory, antispasmodic, and wound-healing activities are well-established (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
Aromatic annual herb, 15-60 cm tall, with an erect, much-branched, hairless stem. Leaves are alternate and finely bi- to tripinnately divided into thread-like segments, giving a feathery appearance. Flower heads are small daisy-like composites, 1-2.5 cm across, with white ray florets that reflex sharply downward as the flower matures around a conical, hollow, yellow disc of tubular florets - the hollow, conical receptacle is a key feature distinguishing German chamomile from similar-looking daisies. The fruit is a tiny ribbed achene without a pappus.[1, 10]
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
Native to Europe and western Asia, growing in damp ground - riverbanks, ditches, damp meadows and waste ground - and widely cultivated.[11]
Harvesting
Flower heads are hand- or machine-harvested at full bloom, when the ray florets are horizontal and just beginning to reflex, then dried quickly at low temperature and out of direct light to preserve the volatile oil.[6]
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
Chamomile is one of the most widely used medicinal herbs in the world, with a long traditional history as a mild digestive, calming and anti-inflammatory remedy - taken as a tea for indigestion, cramping, and restlessness or poor sleep, and applied topically for skin and mucous-membrane inflammation and wound healing. Modern reviews confirm anti-inflammatory, antispasmodic, sedative/anxiolytic and antimicrobial pharmacological activity supporting these traditional uses.[1, 6, 10]
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 heads steeped in hot water, the classic way of taking chamomile for digestive complaints, mild anxiety and sleep support.
Steam-distilled from the flower heads; a concentrated source of alpha-bisabolol and chamazulene, used mainly in topical and aromatherapy preparations.
Concentrated extract or infused oil applied to skin, or as a compress - a randomised controlled trial found a topical chamomile oil preparation effective for knee osteoarthritis pain.
The officially recognised European herbal-monograph preparation, for minor bruises and sprains, short-term use only.
Dosage
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
Drug Class Interactions
Not documented
Pairings
Chamomile and valerian are both traditional mild sedatives for restlessness and poor sleep; taken together they may enhance calming and sleep effects but also add to drowsiness.[23]
Chamomile and lemon balm are both gentle calming herbs commonly combined for stress and sleep; used together their mild sedative effects may add up.[23]
Not documented
Lookalikes Review
Dangerous Lookalikes
Not documented
References & Sources
- El Mihyaoui, A., Esteves da Silva, J.C.G., Charfi, S., Candela Castillo, M.E. and others (2022) 'Chamomile (Matricaria chamomilla L.): A Review of Ethnomedicinal Use, Phytochemistry and Pharmacological Uses', Life, 12(4), pp. 479. doi:10.3390/life12040479 Meta-analysis / review
https://doi.org/10.3390/life12040479 - Kazemi, A., Shojaei-Zarghani, S., Eskandarzadeh, P. and Hashempur, M.H (2024) 'Effects of chamomile (Matricaria chamomilla L.) on sleep: A systematic review and meta-analysis of clinical trials', Complementary Therapies in Medicine, 84, pp. 103071. doi:10.1016/j.ctim.2024.103071 Meta-analysis / review
https://doi.org/10.1016/j.ctim.2024.103071 - Mao, J.J., Xie, S.X., Keefe, J.R., Soeller, I. and others (2016) 'Long-term chamomile (Matricaria chamomilla L.) treatment for generalized anxiety disorder: A randomized clinical trial', Phytomedicine, 23(14), pp. 1735-1742. doi:10.1016/j.phymed.2016.10.012 Randomized trial
https://doi.org/10.1016/j.phymed.2016.10.012 - Amsterdam, J.D., Li, Q.S., Xie, S.X. and Mao, J.J (2020) 'Putative Antidepressant Effect of Chamomile (Matricaria chamomilla L.) Oral Extract in Subjects with Comorbid Generalized Anxiety Disorder and Depression', Journal of Alternative and Complementary Medicine, 26(9), pp. 813-819. doi:10.1089/acm.2019.0252 Clinical study
https://doi.org/10.1089/acm.2019.0252 - McKay, D.L. and Blumberg, J.B (2006) 'A review of the bioactivity and potential health benefits of chamomile tea (Matricaria recutita L.)', Phytotherapy Research, 20(7), pp. 519-530. doi:10.1002/ptr.1900 Meta-analysis / review
https://doi.org/10.1002/ptr.1900 - Dai, Y.L., Li, Y., Wang, Q., Niu, F.J. and others (2022) 'Chamomile: A Review of Its Traditional Uses, Chemical Constituents, Pharmacological Activities and Quality Control Studies', Molecules, 28(1), pp. 133. doi:10.3390/molecules28010133 Meta-analysis / review
https://doi.org/10.3390/molecules28010133 - Miraj, S. and Alesaeidi, S (2016) 'A systematic review study of therapeutic effects of Matricaria recutita chamomile (chamomile)', Electronic Physician, 8(9), pp. 3024-3031. doi:10.19082/3024 Meta-analysis / review
https://doi.org/10.19082/3024 - Amsterdam, J.D., Li, Y., Soeller, I., Rockwell, K. and others (2009) 'A randomized, double-blind, placebo-controlled trial of oral Matricaria recutita (chamomile) extract therapy for generalized anxiety disorder', Journal of Clinical Psychopharmacology, 29(4), pp. 378-382. doi:10.1097/JCP.0b013e3181ac935c Randomized trial
https://doi.org/10.1097/JCP.0b013e3181ac935c - Park, S.H., Kim, D.S., Oh, J., Geum, J.H. and others (2021) 'Matricaria chamomilla (Chamomile) Ameliorates Muscle Atrophy in Mice by Targeting Protein Catalytic Pathways, Myogenesis, and Mitochondrial Dysfunction', The American Journal of Chinese Medicine, 49(6), pp. 1493-1514. doi:10.1142/S0192415X21500701 Preclinical
https://doi.org/10.1142/S0192415X21500701 - Singh, O., Khanam, Z., Misra, N. and Srivastava, M.K (2011) 'Chamomile (Matricaria chamomilla L.): An overview', Pharmacognosy Reviews, 5(9), pp. 82-95. doi:10.4103/0973-7847.79103 Meta-analysis / review
https://doi.org/10.4103/0973-7847.79103 - Amsterdam, J.D., Shults, J., Soeller, I., Mao, J.J., Rockwell, K. and Newberg, A.B (2012) 'Chamomile (Matricaria recutita) may provide antidepressant activity in anxious, depressed humans: an exploratory study', Alternative Therapies in Health and Medicine, 18(5), pp. 44-49. Randomized trial
https://scholar.google.com/scholar?q=Chamomile%20%28Matricaria%20recutita%29%20may%20provide%20antidepressant%20activity%20in%20anxious%2C%20depressed%20humans%3A%20an%20exploratory%20study - Shoara, R., Hashempur, M.H., Ashraf, A., Salehi, A., Dehshahri, S. and Habibagahi, Z (2015) 'Efficacy and safety of topical Matricaria chamomilla L. (chamomile) oil for knee osteoarthritis: a randomized controlled clinical trial', Complementary Therapies in Clinical Practice, 21(3), pp. 181-187. doi:10.1016/j.ctcp.2015.06.003 Randomized trial
https://doi.org/10.1016/j.ctcp.2015.06.003 - Zemestani, M., Rafraf, M. and Asghari-Jafarabadi, M (2016) 'Chamomile tea improves glycemic indices and antioxidants status in patients with type 2 diabetes mellitus', Nutrition, 32(1), pp. 66-72. doi:10.1016/j.nut.2015.07.011 Randomized trial
https://doi.org/10.1016/j.nut.2015.07.011 - Niazi, A. and Moradi, M (2021) 'The effect of chamomile on pain and menstrual bleeding in primary dysmenorrhea: a systematic review', International Journal of Community Based Nursing and Midwifery, 9(3), pp. 174-186. doi:10.30476/ijcbnm.2021.87219.1417 Meta-analysis / review
https://doi.org/10.30476/ijcbnm.2021.87219.1417 - European Medicines Agency (2015) 'European Union herbal monograph on Matricaria recutita L., flos'. Traditional / reference
https://scholar.google.com/scholar?q=European%20Union%20herbal%20monograph%20on%20Matricaria%20recutita%20L.%2C%20flos - Hoffmann, D (2003) 'Medical Herbalism'. Traditional / reference
https://scholar.google.com/scholar?q=Medical%20Herbalism - Padula, M.C (2006) 'Chamomile: industrial profiles'. Traditional / reference
https://scholar.google.com/scholar?q=Chamomile%3A%20industrial%20profiles - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Srivastava, J.K., Shankar, E. and Gupta, S (2010) 'Chamomile: a herbal medicine of the past with bright future', 3(6), pp. 895--901. doi:10.3892/mmr.2010.377 Traditional / reference
https://doi.org/10.3892/mmr.2010.377 - 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 - Segal, R. and Pilote, L (2006) 'Warfarin interaction with Matricaria chamomilla', CMAJ, 174(9), pp. 1281-1282. doi:10.1503/cmaj.051191 Clinical study
https://doi.org/10.1503/cmaj.051191 - Ghasemzadeh Rahbardar, M. and Hosseinzadeh, H (2024) 'Therapeutic potential of hypnotic herbal medicines: A comprehensive review', Phytotherapy Research, 38(6), pp. 3037-3059. doi:10.1002/ptr.8201 Meta-analysis / review
https://doi.org/10.1002/ptr.8201 - Block, K.I., Gyllenhaal, C. and Mead, M.N (2004) 'Safety and efficacy of herbal sedatives in cancer care', Integrative Cancer Therapies, 3(2), pp. 128-148. doi:10.1177/1534735404265003 Meta-analysis / review
https://doi.org/10.1177/1534735404265003 - Amsterdam, J.D., Li, Y., Soeller, I., Rockwell, K., Mao, J.J. and Shults, J (2009) 'A randomized, double-blind, placebo-controlled trial of oral Matricaria recutita (chamomile) extract therapy for generalized anxiety disorder', Journal of Clinical Psychopharmacology, 29(4), pp. 378-382. doi:10.1097/JCP.0b013e3181ac935c Randomized trial
https://doi.org/10.1097/JCP.0b013e3181ac935c - Zemestani, M., Rafraf, M. and Asghari-Jafarabadi, M (2015) 'Chamomile tea improves glycemic indices and antioxidants status in patients with type 2 diabetes mellitus', Nutrition, 32(1), pp. 66-72. doi:10.1016/j.nut.2015.07.011 Randomized trial
https://doi.org/10.1016/j.nut.2015.07.011
- 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.