Plant Comparison
Greater Celandine vs True Cinnamon
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
Greater Celandine and True Cinnamon: they share 8 indicated uses (arthritis / joint pain, bloating, cancer (anticancer research), …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Greater Celandine | True Cinnamon | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 7/10 | Stronger for True Cinnamon |
| Bloating | 1/10 | 1/10 | Comparable evidence |
| Cancer (anticancer research) | 2/10 | 2/10 | Comparable evidence |
| Indigestion | 1/10 | 1/10 | Comparable evidence |
| Infection (general) | 1/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 7/10 | Stronger for True Cinnamon |
| Skin irritation | 1/10 | 7/10 | Stronger for True Cinnamon |
| Wounds | 1/10 | 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
The biologically active and toxicologically important constituents.
Trans-cinnamaldehyde is the principal constituent of cinnamon bark essential oil and the main driver of its antimicrobial, antifungal (anti-Candida) and anti-inflammatory activity, acting partly by damaging microbial cell membranes and inhibiting NF-kB signalling.
Cassia cinnamon (C. cassia) contains high levels of coumarin, which is potentially hepatotoxic in excess; true Ceylon cinnamon (C. verum) contains only trace coumarin and is the safer culinary/medicinal choice. Several pooled clinical and antimicrobial studies do not distinguish the two species.
Pharmacological Actions
Anti-inflammatory, antimicrobial and analgesic (preclinical)
Antispasmodic / choleretic bitter for upper-abdominal and biliary dyspepsia (indigestion, bloating, cramping) - oral use now restricted for safety
Antispasmodic / choleretic bitter for upper-abdominal and biliary dyspepsia (indigestion, bloating, cramping) - oral use now restricted for safety
Traditional & Indicated Uses
inferred from anti-inflammatory action
Antispasmodic / choleretic bitter for upper-abdominal and biliary dyspepsia (indigestion, bloating, cramping) - oral use now restricted for safety
inferred from anticancer action
Antispasmodic / choleretic bitter for upper-abdominal and biliary dyspepsia (indigestion, bloating, cramping) - oral use now restricted for safety
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from antispasmodic action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anticancer action
inferred from antifungal action
inferred from anti-inflammatory action
inferred from antidiabetic action
inferred from anti-inflammatory action
Safety, Cautions & Contraindications
SERIOUS: oral greater celandine can cause acute idiosyncratic liver injury (hepatocellular hepatotoxicity with jaundice). Multiple reported cases - dozens of herb-induced liver injury reports in the literature, with continuing recent case reports - led regulators to restrict or suspend oral products. Do not take internally if you have any liver disease, and stop immediately and seek care at any sign of liver problems (jaundice, dark urine, upper-abdominal pain).
True cinnamon (C. verum) is safe in culinary and moderate medicinal doses. Cassia (C. cassia) contains high coumarin — excessive intake may be hepatotoxic and should not be confused with true cinnamon. May lower blood sugar — use caution with antidiabetic medications. Avoid high doses during pregnancy.
Duke (2002) rates Ceylon cinnamon as +++ and provides clinical evidence (score 2) for antibacterial activity, consistent with Commission E and WHO recognition. Key activities include antifungal (anti-Candida), antispasmodic, and carminative effects. Cinnamon contains cinnamaldehyde, eugenol, and coumarin. Important safety concern: Duke's entry aggregates true cinnamon (C. verum) and cassia (C. cassia) — cassia contains significantly higher coumarin levels (potentially hepatotoxic) than true Ceylon cinnamon. True cinnamon (C. verum) has very low coumarin content and is safe at normal culinary doses. Medicinal dose: 0.5–1 g bark powder three times daily. Caution: cinnamon bark oil is highly irritating to mucous membranes (Duke, 2002).
External Ids
Botanical Description
Branching perennial herb with soft, brittle, hairy stems that exude a distinctive bright orange-yellow latex (sap) when cut or broken. The leaves are deeply lobed, pale bluish-green beneath, giving a delicate, almost fern-like appearance. Small, four-petalled, bright yellow flowers are borne in loose umbel-like clusters.[4]
Evergreen tree with smooth, thin, light brown bark and leathery, oval leaves with three prominent longitudinal veins, often flushed reddish-pink when young. Small, pale yellow-green flowers are borne in panicles, followed by small, dark, single-seeded berries. The thin inner bark is peeled and dried into the characteristic pale, tightly layered, multi-ply quills of true cinnamon.
Habitat
Grows in shaded, nutrient-rich ground - hedgerows, walls, waste ground and woodland edges, often near old buildings; native to Europe and Western Asia and naturalised in North America.[4]
Native to Sri Lanka and the Malabar coast of southern India; cultivated in warm, humid tropical lowlands, especially Sri Lanka, which remains the main source of true (Ceylon) cinnamon.
Harvesting
The flowering aerial parts are cut in spring to summer; the fresh orange latex is collected by breaking a stem or leaf as needed for topical (wart) use. Given the documented hepatotoxicity of oral preparations, harvesting for internal use is not recommended.[4]
Young shoots are cut back to encourage thin, straight new growth; the thin outer bark is scraped away and the paper-thin inner bark is peeled off, dried and rolled by hand into the characteristic multi-layered quills of Ceylon cinnamon.
Traditional Uses
Greater celandine has a long European folk history, reflected in its name 'tetterwort', as a topical remedy for warts and skin blemishes (the fresh orange latex dabbed directly on), and internally as a bitter choleretic digestive remedy for biliary and upper-abdominal dyspepsia - though oral use is now medically restricted because of documented liver injury.[4]
True cinnamon bark has an ancient trade and medicinal history across Asia, the Middle East and Europe as a warming digestive and circulatory remedy, used for indigestion and as a general tonic spice; because it contains only trace coumarin, it is considered the safer species for frequent or medicinal use compared with cassia.[8]
Preparations
Fresh orange latex from a broken stem dabbed directly onto warts, the classic external folk use; kept well away from eyes, mucous membranes and broken skin.
Historically taken as an infusion or tincture for biliary dyspepsia, but oral use is now restricted in several jurisdictions due to hepatotoxicity risk and should only be considered under professional supervision, if at all.
Dried bark powder or standardised extract taken as capsules for metabolic and antioxidant support.
Comminuted bark infused in hot water as a herbal tea, 0.5-1 g up to four times daily per the EU herbal monograph. The monograph describes an infusion; it does not cover a simmered decoction. Educational reference only, not a prescription.
Dosage
Because of a documented risk of acute liver injury, no internal dose is given here; oral use should be avoided, especially by anyone with liver disease, and any sign of jaundice, dark urine or upper-abdominal pain warrants immediate medical attention. Educational reference only, not a prescription.
The EU herbal monograph on Cinnamomum verum J.S. Presl, cortex gives, for adults and elderly, 0.5-1 g of the comminuted bark as an infusion up to 4 times daily; a liquid extract at 0.5-1 mL three times daily and a tincture at a daily dose of 2-4 mL are also listed. Not recommended under 18 years, and a practitioner should be consulted if symptoms persist beyond 2 weeks. Note this is Ceylon cinnamon (C. verum); cassia species carry a much higher coumarin load and are not covered here. Educational reference only, not a prescription.
References
Lookalikes Review
Drug Class Interactions
Not documented
Pairings
Not documented
Cinnamon and fenugreek can each lower blood sugar, so taking them together — especially alongside diabetes medicines — may add up and increase the risk of blood sugar dropping too low (hypoglycaemia). Monitor your blood glucose.[18, 19]
Cinnamon and bitter melon can each lower blood sugar, so taking them together — especially alongside diabetes medicines — may add up and increase the risk of hypoglycaemia. Monitor your blood glucose.[18, 20]
References & Sources
- Li, X.L., Sun, Y.P., Wang, M., Wang, Z.B. and Kuang, H.X (2024) 'Alkaloids in Chelidonium majus L.: a review of its phytochemistry, pharmacology and toxicology', Frontiers in Pharmacology, 15, pp. 1440979. doi:10.3389/fphar.2024.1440979 Traditional / reference
https://doi.org/10.3389/fphar.2024.1440979 - Koriem, K.M.M., Arbid, M.S. and Asaad, G.F (2012) 'Chelidonium majus leaves methanol extract and its chelidonine alkaloid ingredient reduce cadmium-induced nephrotoxicity in rats', Journal of Natural Medicines, 67(1), pp. 159-167. doi:10.1007/s11418-012-0667-6 Preclinical
https://doi.org/10.1007/s11418-012-0667-6 - Nawrot, R (2017) 'Defense-related Proteins from Chelidonium majus L. as Important Components of its Latex', Current Protein & Peptide Science, 18(8), pp. 864-880. doi:10.2174/1389203718666170406124013 Traditional / reference
https://doi.org/10.2174/1389203718666170406124013 - Gilca, M., Gaman, L., Panait, E., Stoian, I. and Atanasiu, V (2010) 'Chelidonium majus - an integrative review: traditional knowledge versus modern findings', Forschende Komplementarmedizin. doi:10.1159/000321397 Traditional / reference
https://doi.org/10.1159/000321397 - Popovic, A., Deljanin, M., Popovic, S., Todorovic, D., Djurdjevic, P., Matic, S., Stankovic, M., Avramovic, D. and Baskic, D (2021) 'Chelidonium majus crude extract induces activation of peripheral blood mononuclear cells and enhances their cytotoxic effect toward HeLa cells', International Journal of Environmental Health Research, 32(7), pp. 1554-1566. doi:10.1080/09603123.2021.1897534 Preclinical
https://doi.org/10.1080/09603123.2021.1897534 - Shen, L., Lee, S.A., Joo, J.C., Hong, E., Cui, Z.Y., Jo, E., Park, S.J. and Jang, H.J (2022) 'Chelidonium majus induces apoptosis of human ovarian cancer cells via ATF3-mediated regulation of Foxo3a by Tip60', Journal of Microbiology and Biotechnology, 32(4), pp. 493-503. doi:10.4014/jmb.2109.09030 Preclinical
https://doi.org/10.4014/jmb.2109.09030 - Deljanin, M., Nikolic, M., Baskic, D., Todorovic, D., Djurdjevic, P., Zaric, M., Stankovic, M., Todorovic, M., Avramovic, D. and Popovic, S (2016) 'Chelidonium majus crude extract inhibits migration and induces cell cycle arrest and apoptosis in tumor cell lines', Journal of Ethnopharmacology, 190, pp. 362-371. doi:10.1016/j.jep.2016.06.056 Preclinical
https://doi.org/10.1016/j.jep.2016.06.056 - Warowicka, A., Qasem, B., Dera-Szymanowska, A., Wolun-Cholewa, M., Florczak, P., Horst, N., Napierala, M., Szymanowski, K., Popenda, L., Bartkowiak, G., Florek, E., Gozdzicka-Jozefiak, A. and Mlynarz, P (2021) 'Effect of protoberberine-rich fraction of Chelidonium majus L. on endometriosis regression', Pharmaceutics, 13(7), pp. 931. doi:10.3390/pharmaceutics13070931 Preclinical
https://doi.org/10.3390/pharmaceutics13070931 - Kadan, G., Gozler, T. and Hesse, M (1992) '(+)-Norchelidonine from Chelidonium majus', Planta Medica, 58(5), pp. 477. doi:10.1055/s-2006-961523 Preclinical
https://doi.org/10.1055/s-2006-961523 - Musidlak, O., Warowicka, A., Broniarczyk, J., Adamczyk, D., Gozdzicka-Jozefiak, A. and Nawrot, R (2022) 'The activity of Chelidonium majus L. latex and its components on HPV reveal insights into the antiviral molecular mechanism', International Journal of Molecular Sciences, 23(16), pp. 9241. doi:10.3390/ijms23169241 Preclinical
https://doi.org/10.3390/ijms23169241 - Zhang, W., You, C., Wang, C., Fan, L., Wang, Y., Su, Y., Deng, Z. and Du, S (2014) 'One new alkaloid from Chelidonium majus L', Natural Product Research, 28(21), pp. 1873-1878. doi:10.1080/14786419.2014.953497 Preclinical
https://doi.org/10.1080/14786419.2014.953497 - Capistrano I, R., Wouters, A., Lardon, F., Gravekamp, C., Apers, S. and Pieters, L (2015) 'In vitro and in vivo investigations on the antitumour activity of Chelidonium majus', Phytomedicine, 22(14), pp. 1279-1287. doi:10.1016/j.phymed.2015.10.013 Preclinical
https://doi.org/10.1016/j.phymed.2015.10.013 - Teschke, R., Frenzel, C., Glass, X., Schulze, J. and Eickhoff, A (2012) 'Greater Celandine hepatotoxicity: a clinical review', Annals of Hepatology. doi:10.1016/s1665-2681(19)31408-5 Clinical study
https://doi.org/10.1016/s1665-2681(19)31408-5 - Ciornolutchii, V., Ismaiel, A., Sabo, C.M., Al Hajjar, N., Seicean, A. and Dumitrascu, D.L (2024) 'A Hidden Cause of Hypertransaminasemia: Liver Toxicity Caused by Chelidonium Majus L. Report of Two Cases of Herb-Induced Liver Injury and Literature Review', American Journal of Therapeutics, 31(4), pp. e382--e387. doi:10.1097/MJT.0000000000001708 Clinical study
https://doi.org/10.1097/MJT.0000000000001708
- Muthukuda, D. and de Silva, C.K. and Ajanthan, S. and Wijesinghe, N. and Dahanayaka, A. and Pathmeswaran, A (2025) 'Effects of Cinnamomum zeylanicum (Ceylon cinnamon) extract on lipid profile, glucose levels and its safety in adults: A randomized, double-blind, controlled trial', PLoS One, 20(1), pp. e0317904. doi:10.1371/journal.pone.0317904 Clinical study
https://doi.org/10.1371/journal.pone.0317904 - Singh, N. and Rao, A.S. and Nandal, A. and Kumar, S. and Yadav, S.S. and Ganaie, S.A. and Narasimhan, B (2020) 'Phytochemical and pharmacological review of Cinnamomum verum J. Presl - a versatile spice used in food and nutrition', Food Chemistry, 338, pp. 127773. doi:10.1016/j.foodchem.2020.127773 Meta-analysis / review
https://doi.org/10.1016/j.foodchem.2020.127773 - Kim, N.Y. and Kim, S. and Park, H.M. and Lim, C.M. and Kim, J. and Park, J.Y. and Jeon, K.B. and Poudel, A (2023) 'Cinnamomum verum extract inhibits NOX2/ROS and PKCdelta/JNK/AP-1/NF-kB pathway-mediated inflammatory response in PMA-stimulated THP-1 monocytes', Phytomedicine, 112, pp. 154685. doi:10.1016/j.phymed.2023.154685 Preclinical
https://doi.org/10.1016/j.phymed.2023.154685 - Pagliari, S. and Forcella, M. and Lonati, E. and Sacco, G. and Romaniello, F. and Rovellini, P. and Fusi, P. and Palestini, P (2023) 'Antioxidant and Anti-Inflammatory Effect of Cinnamon (Cinnamomum verum J. Presl) Bark Extract after In Vitro Digestion Simulation', Foods, 12(3), pp. 452. doi:10.3390/foods12030452 Preclinical
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https://scholar.google.com/scholar?q=Anti-inflammatory%2C%20antidiabetic%20and%20hypolipidemic%20potential%20of%20Cinnamomum%20verum%20J.%20Presl%20bark%20coupled%20with%20FT-IR%20and%20HPLC%20analysis - Gu, K., Feng, S., Zhang, X., Peng, Y., Sun, P., Liu, W., Wu, Y., Yu, Y., Liu, X., Deng, G., Zheng, J., Li, B. and Zhao, L (2023) 'Deciphering the antifungal mechanism and functional components of Cinnamomum cassia essential oil against Candida albicans', Journal of Ethnopharmacology, pp. 2023. doi:10.1016/j.jep.2023.117156 Preclinical
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https://doi.org/10.3389/fphar.2022.918479 - Groves, M (2016) 'Body into Balance'. Traditional / reference
https://scholar.google.com/scholar?q=Body%20into%20Balance - European Medicines Agency (HMPC) (2011) 'Community herbal monograph on Cinnamomum verum J.S. Presl, cortex'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/community-herbal-monograph-cinnamomum-verum-js-presl-cortex_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-monograph/community-herbal-monograph-cinnamomum-verum-js-presl-cortex_en.pdf - Jafari, A., Mardani, H., Faghfouri, A.H., AhmadianMoghaddam, M., Musazadeh, V. and Alaghi, A (2025) 'The effect of cinnamon supplementation on cardiovascular risk factors in adults: a GRADE assessed systematic review, dose-response and meta-analysis of randomized controlled trials', Journal of Health, Population and Nutrition, 44(1). doi:10.1186/s41043-025-00967-3 Meta-analysis / review
https://doi.org/10.1186/s41043-025-00967-3 - Akilen, R. et al (2010) 'Glycated haemoglobin and blood pressure-lowering effect of cinnamon in multi-ethnic Type 2 diabetic patients in the UK', 27(10), pp. 1159--1167. Clinical study
https://scholar.google.com/scholar?q=Glycated%20haemoglobin%20and%20blood%20pressure-lowering%20effect%20of%20cinnamon%20in%20multi-ethnic%20Type%202%20diabetic%20patients%20in%20the%20UK - Khan, A. et al (2003) 'Cinnamon improves glucose and lipids of people with type 2 diabetes', 26(12), pp. 3215--3218. doi:10.2337/diacare.26.12.3215 Traditional / reference
https://doi.org/10.2337/diacare.26.12.3215 - Moridpour, A.H., Kavyani, Z., Khosravi, S., Farmani, E., Daneshvar, M., Musazadeh, V. and Faghfouri, A.H (2023) 'The effect of cinnamon supplementation on glycemic control in patients with type 2 diabetes mellitus: An updated systematic review and dose-response meta-analysis of randomized controlled trials', Phytotherapy Research, 38(1), pp. 117--130. doi:10.1002/ptr.8026 Meta-analysis / review
https://doi.org/10.1002/ptr.8026 - de Moura, S.L., Gomes, B.G.R., Guilarducci, M.J., Coelho, O.G.L., Guimaraes, N.S. and Gomes, J.M.G (2025) 'Effects of cinnamon supplementation on metabolic biomarkers in individuals with type 2 diabetes: a systematic review and meta-analysis', Nutrition Reviews, 83(2), pp. 249--279. doi:10.1093/nutrit/nuae058 Meta-analysis / review
https://doi.org/10.1093/nutrit/nuae058 - Maierean, S.M., Serban, M.C., Sahebkar, A., Ursoniu, S., Serban, A., Penson, P. and Banach, M (2017) 'The effects of cinnamon supplementation on blood lipid concentrations: A systematic review and meta-analysis', Journal of Clinical Lipidology, 11(6), pp. 1393--1406. doi:10.1016/j.jacl.2017.08.004 Meta-analysis / review
https://doi.org/10.1016/j.jacl.2017.08.004 - 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 - Allen, R.W., Schwartzman, E., Baker, W.L., Coleman, C.I. and Phung, O.J (2013) 'Cinnamon use in type 2 diabetes: an updated systematic review and meta-analysis', Annals of Family Medicine, 11(5), pp. 452-459. doi:10.1370/afm.1517 Meta-analysis / review
https://doi.org/10.1370/afm.1517 - de Moura, S.L., Gomes, B.G.R., Guilarducci, M.J., Coelho, O.G.L., Guimaraes, N.S. and Gomes, J.M.G (2025) 'Effects of cinnamon supplementation on metabolic biomarkers in individuals with type 2 diabetes: a systematic review and meta-analysis', Nutrition Reviews, 83(2), pp. 249-279. doi:10.1093/nutrit/nuae058 Meta-analysis / review
https://doi.org/10.1093/nutrit/nuae058 - Kim, J., Noh, W., Kim, A., Choi, Y. and Kim, Y.S (2023) 'The effect of fenugreek in type 2 diabetes and prediabetes: a systematic review and meta-analysis of randomized controlled trials', International Journal of Molecular Sciences, 24(18), pp. 13999. doi:10.3390/ijms241813999 Meta-analysis / review
https://doi.org/10.3390/ijms241813999 - Zhang, X., Zhao, Y., Song, Y. and Miao, M (2024) 'Effects of Momordica charantia L. supplementation on glycemic control and lipid profile in type 2 diabetes mellitus patients: a systematic review and meta-analysis of randomized controlled trials', Heliyon, 10(10), pp. e31126. doi:10.1016/j.heliyon.2024.e31126 Meta-analysis / review
https://doi.org/10.1016/j.heliyon.2024.e31126
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.