Omnia SanaPlant Comparison
Common coltsfoot vs Great Mullein
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
Common coltsfoot and Great Mullein: they share 4 indicated uses (arthritis / joint pain, inflammation (general), insomnia / sleeplessness, …); 2 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Common coltsfoot | Great Mullein | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 1/10 | Comparable evidence |
| Inflammation (general) | 2/10 | 1/10 | Comparable evidence |
| Insomnia / sleeplessness | 1/10 | 1/10 | Comparable evidence |
| Skin irritation | 1/10 | 5/10 | Stronger for Great Mullein |
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
Hepatotoxic constituents that are the central safety concern for this plant; regulatory limits and PA-controlled/PA-reduced products exist specifically because of these compounds.
Demulcent polysaccharide contributing to the traditional soothing action on irritated airways.
Anti-inflammatory iridoids contributing to the plant's traditional respiratory and anti-inflammatory use.
Mucilage gives the soothing demulcent action; saponins contribute to the traditional expectorant effect.
Pharmacological Actions
Traditional & Indicated Uses
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from sedative action
inferred from anti-inflammatory action
inferred from expectorant action
inferred from anticancer action
inferred from anti-inflammatory action
inferred from sedative action
Safety, Cautions & Contraindications
Safety notes (contraindications, interactions, pregnancy/lactation notes, adverse effects, dose-duration cautions) Important: Coltsfoot naturally contains pyrrolizidine alkaloids (PAs)—plant chemicals that can damage the liver and may increase cancer risk with enough exposure (EMA, 2021; Kopp et al., 2020).
Because of this, European regulators set very strict limits for PA exposure from herbal products (EMA, 2021).
Many safety-focused herbal references recommend avoiding homemade/internal coltsfoot use, unless the product is specifically made to be PA-controlled / PA-reduced (EMA, 2021).
Avoid internal use if you are pregnant or breastfeeding, have liver disease, or for children—these groups are treated as “sensitive” in PA risk guidance (EMA, 2021).
Medication caution: if you take medicines that stress the liver (some prescription drugs can), it’s extra important to avoid unregulated PA exposure (general PA risk logic; consult a clinician) (EMA, 2021).
Topical use may still carry PA considerations; EMA discusses limits and recommends use only on intact skin for PA-containing products (EMA, 2021).
Duke (2002) provides clinical support (score 2) for coltsfoot's anti-inflammatory and expectorant effects, explaining its traditional use in bronchitis and coughs. However, the plant contains hepatotoxic pyrrolizidine alkaloids (PAs), and Duke notes a carcinogenic score (1) — a critical safety concern. Commission E has placed restrictions on coltsfoot use, recommending maximum internal use of 4–6 weeks per year and avoiding use in pregnancy, lactation, and in children under 12. Duke rates its overall safety as low (+) and emphasizes that preparations free of PAs are preferred (Duke, 2002).
Generally considered safe for short-term use. The tiny hairs on the leaves can cause irritation if tea is not properly filtered. No significant drug interactions documented. Not recommended during pregnancy or breastfeeding due to lack of safety data.
Duke (2002) rates mullein as ++ with clinical evidence (score 2) for its expectorant activity, consistent with Commission E approval for catarrh and inflammation of the respiratory tract. It functions as a demulcent and emollient for mucous membranes. Traditionally used for bronchitis, asthma, and earaches (oil infusion). Dose: 1.5–2 g dried flower or leaf as tea, three to four times daily. Duke notes an antiviral (antiherpetic) activity at the experimental level. The plant is generally well-tolerated with no known significant contraindications at therapeutic doses (Duke, 2002).
External Ids
Botanical Description
Low perennial herb notable for flowering before its leaves appear: solitary, bright yellow, dandelion-like flower heads emerge on scaly pinkish stalks in very early spring, followed later by large, hoof-shaped (heart-shaped with angular teeth), white-woolly-backed leaves arising directly from the creeping rhizome.[11]
Tall, stately biennial herb forming a low first-year rosette of large, soft, thick, densely woolly grey-green leaves; in the second year it sends up a single, tall, unbranched flowering spike densely packed with bright yellow, five-petalled flowers that open a few at a time.[1]
Habitat
Grows on disturbed, damp or clay-rich waste ground, riverbanks, railway embankments and bare soil; native to Europe, North Africa and temperate Asia and naturalised in North America.[11]
Grows on dry, sunny waste ground, roadsides, disturbed soil and rocky slopes; native to Europe, North Africa and Asia and widely naturalised in North America and elsewhere.[1]
Harvesting
Flowers are gathered in very early spring before the leaves appear; leaves are gathered later in the season once expanded. Given the plant's pyrrolizidine alkaloid content, harvesting from a positively confirmed patch (not a look-alike) and preferring PA-tested commercial material for internal use is strongly advised.[2]
The flowers are picked individually as they open through summer (since they open only a few at a time and quickly fade once picked); leaves are gathered from the first-year rosette or second-year plant and dried, with care to filter out the fine leaf hairs, which can irritate the throat if not strained from tea.[1]
Traditional Uses
Coltsfoot has an ancient European and Chinese tradition, reflected in its Latin name (tussis = cough), as an expectorant and demulcent remedy for coughs, bronchitis and irritated airways; because of its pyrrolizidine alkaloid content, contemporary use is restricted to short courses of PA-controlled preparations under regulatory limits (see contraindications).[1, 2, 12]
Great mullein has a long European and Native American tradition as a soothing demulcent and expectorant remedy for cough, bronchitis and irritated airways, and the flower has also been infused in oil as a traditional remedy for earache; the soft, woolly leaf gave rise to old names like 'flannel leaf' and 'velvet plant'.[1, 2]
Preparations
Commercially prepared, pyrrolizidine-alkaloid-tested extract or syrup, the only form recommended for internal use given the plant's natural PA content.
Dried flower or leaf infused in hot water; traditional but subject to strict duration/PA-content limits under EU herbal regulation.
Dried flower or leaf infused in hot water and carefully strained (to remove fine irritant hairs) as a traditional demulcent cough and respiratory tea.
Dosage
EU regulatory guidance restricts internal use to PA-controlled preparations. The EMA public statement on unsaturated pyrrolizidine alkaloids records a maximum daily intake for internal use of 1 microgram of PAs for at most 6 weeks per year, or 0.1 microgram per day with no duration limit; for cutaneous use the limits are 100 micrograms for at most 6 weeks per year, or 10 micrograms without a duration limit. Not for use in pregnancy, breastfeeding, or children. Note that these are limits on PA intake, not a herb dose — no EMA monograph exists for Tussilago farfara, so there is no official posology for the herb itself. Educational reference only, not a prescription — consult a qualified practitioner and prefer tested commercial products.
The EU herbal monograph gives 1.5-2 g of the flower in 150 mL of boiling water as an infusion, three to four times daily (daily dose 4.5-8 g), in adolescents, adults and elderly; the infusion should be carefully strained to remove the irritant hairs. The monograph covers the FLOWER (Verbasci flos) only — it gives no posology for the leaf. Not recommended under 12 years. Educational reference only, not a prescription.
References
Lookalikes Review
Dangerous Lookalikes
References & Sources
- Ahmad, I., Kudaibergenova, B., Ahmad, M. and others (2025) 'Coltsfoot (Tussilago farfara L.; Asteraceae): modern methods of extraction, phytochemistry, nanoparticles synthesis, ethnopharmacology, and biological activities', Natural Product Research, pp. 1-20. doi:10.1080/14786419.2025.2548616 Traditional / reference
https://doi.org/10.1080/14786419.2025.2548616 - Chen, S., Dong, L., Quan, H., Zhou, X. and others (2020) 'A review of the ethnobotanical value, phytochemistry, pharmacology, toxicity and quality control of Tussilago farfara L. (coltsfoot)', Journal of Ethnopharmacology, 267, pp. 113478. doi:10.1016/j.jep.2020.113478 Traditional / reference
https://doi.org/10.1016/j.jep.2020.113478 - Feng, J., Zhang, Y., Qin, X., Gao, T. and others (2022) 'Novel Quinic Acid Glycerates from Tussilago farfara Inhibit Polypeptide GalNAc-Transferase', ChemBioChem, 23(3), pp. e202100539. doi:10.1002/cbic.202100539 Preclinical
https://doi.org/10.1002/cbic.202100539 - Zhao, J., Evangelopoulos, D., Bhakta, S., Gray, A.I. and Seidel, V (2014) 'Antitubercular activity of Arctium lappa and Tussilago farfara extracts and constituents', Journal of Ethnopharmacology, 155(1), pp. 796-800. doi:10.1016/j.jep.2014.06.034 Preclinical
https://doi.org/10.1016/j.jep.2014.06.034 - Avila, C., Breakspear, I., Hawrelak, J., Salmond, S. and Evans, S (2020) 'A systematic review and quality assessment of case reports of adverse events for borage (Borago officinalis), coltsfoot (Tussilago farfara) and comfrey (Symphytum officinale)', Fitoterapia, 142, pp. 104519. doi:10.1016/j.fitote.2020.104519 Meta-analysis / review
https://doi.org/10.1016/j.fitote.2020.104519 - Lee, J., Park, S., Kim, M.J., Kwon, S.J. and others (2019) 'Sesquiterpenoids from Tussilago farfara Flower Bud Extract for the Eco-Friendly Synthesis of Silver and Gold Nanoparticles Possessing Antibacterial and Anticancer Activities', Nanomaterials (Basel), 9(6), pp. 819. doi:10.3390/nano9060819 Preclinical
https://doi.org/10.3390/nano9060819 - Bota, V.B., Neamtu, A.A., Olah, N.K., Chiselita, O. and others (2022) 'A Comparative Analysis of the Anatomy, Phenolic Profile, and Antioxidant Capacity of Tussilago farfara L. Vegetative Organs', Plants (Basel), 11(13), pp. 1663. doi:10.3390/plants11131663 Preclinical
https://doi.org/10.3390/plants11131663 - Boucher, M.A., Cote, H., Pichette, A., Ripoll, L. and Legault, J (2020) 'Chemical composition and antibacterial activity of Tussilago farfara (L.) essential oil from Quebec, Canada', Natural Product Research, 34(4), pp. 545-548. doi:10.1080/14786419.2018.1489384 Preclinical
https://doi.org/10.1080/14786419.2018.1489384 - Li, Z.Y., Zhang, J., Zhang, Y.B., Yang, X.W. and others (2022) 'Polyhydroxylated eudesmane sesquiterpenoids and sesquiterpenoid glucoside from the flower buds of Tussilago farfara', Chinese Journal of Natural Medicines, 20(4), pp. 301-308. doi:10.1016/S1875-5364(21)60120-6 Preclinical
https://doi.org/10.1016/S1875-5364(21)60120-6 - Jang, H., Lee, J.W., Lee, C., Jin, Q. and others (2016) 'Sesquiterpenoids from Tussilago farfara inhibit LPS-induced nitric oxide production in macrophage RAW 264.7 cells', Archives of Pharmacal Research, 39(1), pp. 127-132. doi:10.1007/s12272-015-0667-7 Preclinical
https://doi.org/10.1007/s12272-015-0667-7 - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Westendorf, J., Czok, G., Marquardt, R., Nausner, M., Krauer, B. and Paul, H.L (1988) 'Pyrrolizidine alkaloid content of Tussilago farfara plants from different regions and preparations', pp. 903--909. Traditional / reference
https://scholar.google.com/scholar?q=Pyrrolizidine%20alkaloid%20content%20of%20Tussilago%20farfara%20plants%20from%20different%20regions%20and%20preparations - European Medicines Agency (HMPC) (2021) 'Public statement on the use of herbal medicinal products containing toxic, unsaturated pyrrolizidine alkaloids (PAs), including recommendations regarding contamination of herbal medicinal products with PAs, Revision 1'. Available at: https://www.ema.europa.eu/en/documents/public-statement/public-statement-use-herbal-medicinal-products-containing-toxic-unsaturated-pyrrolizidine-alkaloids-pas-including-recommendations-regarding-contamination-herbal-medicinal-products-pyrrolizidine_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/public-statement/public-statement-use-herbal-medicinal-products-containing-toxic-unsaturated-pyrrolizidine-alkaloids-pas-including-recommendations-regarding-contamination-herbal-medicinal-products-pyrrolizidine_en.pdf - 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 - Sperl, W. and Stuppner, H. and Gassner, I. and Judmaier, W. and Dietze, O. and Vogel, W (1995) 'Reversible hepatic veno-occlusive disease in an infant after consumption of pyrrolizidine-containing herbal tea', European Journal of Pediatrics, 154(2), pp. 112-6. doi:10.1007/BF01991912 Clinical study
https://doi.org/10.1007/BF01991912
- Turker, A.U. and Gurel, E (2005) 'Common mullein (Verbascum thapsus L.): recent advances in research', Phytotherapy Research, 19(9), pp. 733-739. doi:10.1002/ptr.1653 Meta-analysis / review
https://doi.org/10.1002/ptr.1653 - Gupta, A., Atkinson, A.N., Pandey, A.K. and Bishayee, A (2022) 'Health-promoting and disease-mitigating potential of Verbascum thapsus L. (common mullein): A review', Phytotherapy Research, 36(4), pp. 1507-1522. doi:10.1002/ptr.7393 Meta-analysis / review
https://doi.org/10.1002/ptr.7393 - Ali, N., Ali Shah, S.W., Shah, I., Ahmed, G. and others (2012) 'Anthelmintic and relaxant activities of Verbascum thapsus (Mullein)', BMC Complementary and Alternative Medicine, 12, pp. 29. doi:10.1186/1472-6882-12-29 Preclinical
https://doi.org/10.1186/1472-6882-12-29 - Mahdavi, S., Amiradalat, M., Babashpour, M., Sheikhlooei, H. and others (2020) 'The Antioxidant, Anticarcinogenic and Antimicrobial Properties of Verbascum thapsus L', Medicinal Chemistry, 16(7), pp. 991-995. doi:10.2174/1573406415666190828155951 Preclinical
https://doi.org/10.2174/1573406415666190828155951 - Kashan, Z.F., Arbabi, M., Delavari, M., Hooshyar, H. and others (2015) 'Effect of Verbascum thapsus ethanol extract on induction of apoptosis in Trichomonas vaginalis in vitro', Infectious Disorders Drug Targets, 15(2), pp. 125-130. doi:10.2174/1871526515666150724114924 Preclinical
https://doi.org/10.2174/1871526515666150724114924 - Chen, S., Liu, H., Wang, S., Jiang, H. and others (2022) 'The Neuroprotection of Verbascoside in Alzheimer's Disease Mediated through Mitigation of Neuroinflammation via Blocking NF-kappaB-p65 Signaling', Nutrients, 14(7), pp. 1417. doi:10.3390/nu14071417 Preclinical
https://doi.org/10.3390/nu14071417 - Bampidis, V., Azimonti, G., Bastos, M.L. and others (EFSA FEEDAP Panel) (2021) 'Safety of a feed additive consisting of a tincture derived from Verbascum thapsus L. (great mullein tincture) for use in all animal species (MANGHEBATI SAS)', EFSA Journal, 19(7), pp. e06711. doi:10.2903/j.efsa.2021.6711 Meta-analysis / review
https://doi.org/10.2903/j.efsa.2021.6711 - Blanco-Salas, J., Hortigon-Vinagre, M.P., Morales-Jadan, D. and Ruiz-Tellez, T (2021) 'Searching for Scientific Explanations for the Uses of Spanish Folk Medicine: A Review on the Case of Mullein (Verbascum, Scrophulariaceae)', Biology, 10(7), pp. 618. doi:10.3390/biology10070618 Meta-analysis / review
https://doi.org/10.3390/biology10070618 - Taleb, S. and Saeedi, M (2021) 'The effect of Verbascum thapsus on episiotomy wound healing in nulliparous women: a randomized controlled trial', BMC Complementary Medicine and Therapies, 21(1), pp. 166. doi:10.1186/s12906-021-03339-6 Randomized trial
https://doi.org/10.1186/s12906-021-03339-6 - Soto, K.M., Luzardo-Ocampo, I., Lopez-Romero, J.M., Mendoza, S. and others (2022) 'Gold Nanoparticles Synthesized with Common Mullein (Verbascum thapsus) and Castor Bean (Ricinus communis) Ethanolic Extracts Displayed Antiproliferative Effects and Induced Caspase 3 Activity in Human HT29 and SW480 Cancer Cells', Pharmaceutics, 14(10), pp. 2069. doi:10.3390/pharmaceutics14102069 Preclinical
https://doi.org/10.3390/pharmaceutics14102069 - European Medicines Agency (HMPC) (n.d.) 'European Union herbal monograph on Verbascum thapsus L., V. densiflorum Bertol. and V. phlomoides L., flos (Verbasci flos)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/verbasci-flos Traditional / reference
https://www.ema.europa.eu/en/medicines/herbal/verbasci-flos - Oliff, H.S. and Blumenthal, M (2003) 'Great mullein', pp. 30--31. Traditional / reference
https://scholar.google.com/scholar?q=Great%20mullein - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - Turker, A.U. and Gurel, E (2005) 'Common mullein (Verbascum thapsus L.): recent advances in research', 19(9), pp. 733--739. doi:10.1002/ptr.1653 Traditional / reference
https://doi.org/10.1002/ptr.1653 - 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 - 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 - Janssen, R.M. and Berg, M. and Ovakim, D.H (2016) 'Two cases of cardiac glycoside poisoning from accidental foxglove ingestion', CMAJ, 188(10), pp. 747-750. doi:10.1503/cmaj.150676 Clinical study
https://doi.org/10.1503/cmaj.150676 - 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/ - NC State Extension (2024) 'Verbascum thapsus (Common Mullein)'. Available at: https://plants.ces.ncsu.edu/plants/verbascum-thapsus/ Traditional / reference
https://plants.ces.ncsu.edu/plants/verbascum-thapsus/
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.