Plant Comparison
Chili Pepper vs Catnip
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
Chili Pepper and Catnip: they share 7 indicated uses (arthritis / joint pain, bloating, indigestion, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Chili Pepper | Catnip | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 6/10 | 1/10 | Stronger for Chili Pepper |
| Bloating | 1/10 | 1/10 | Comparable evidence |
| Indigestion | 1/10 | 1/10 | Comparable evidence |
| Infection (general) | 1/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 1/10 | Comparable evidence |
| Skin irritation | 1/10 | 1/10 | Comparable evidence |
| Wounds | 1/10 | 1/10 | 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 pungent alkaloid-like compounds responsible for the fruit's heat and its counterirritant/analgesic action via TRPV1 receptor desensitisation.
Give ripe red fruit its colour and contribute antioxidant and anti-inflammatory activity.
Antioxidant and anti-inflammatory flavonoids identified in leaf and fruit extracts.
The characteristic volatile iridoid responsible for the cat-attractant effect and studied for sedative, antimicrobial and insect-repellent activity.
Rich in nepetalactone isomers along with other monoterpenes; studied for antimicrobial and antioxidant activity.
Pharmacological Actions
Traditional & Indicated Uses
inferred from anti-inflammatory action
inferred from analgesic action
inferred from digestive action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from digestive action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from sedative action
inferred from anti-inflammatory action
Safety, Cautions & Contraindications
Capsaicin causes intense burning sensation; avoid contact with eyes and mucous membranes. High oral doses can cause gastrointestinal irritation, nausea, and diarrhoea. Topical preparations may cause skin irritation and should be used diluted. Not recommended for individuals with active peptic ulcers. Caution with anticoagulants — capsaicin may enhance bleeding risk. During pregnancy, culinary amounts are considered safe, but high-dose supplements should be avoided. Repeated topical application leads to desensitisation (TRPV1 depletion), which is the basis for its analgesic use. Children under 2 should not be given capsaicin-containing topical products (Basu and Bhattacharyya, 2023).
Duke (2002) rates cayenne/chili pepper (Capsicum annuum) highly for its clinically documented analgesic, counterirritant, and rubefacient activities. Commission E approves topical capsaicin preparations for muscle pain, arthritis, and neuralgia (score 2). The active compound capsaicin depletes substance P in sensory neurons upon repeated application, reducing pain signals. Capsaicin cream (0.025–0.075%) is a validated treatment for post-herpetic neuralgia, diabetic neuropathy, and osteoarthritis pain. Internal use can irritate mucous membranes; external use requires avoiding contact with eyes and mucous membranes (Duke, 2002).
Pregnancy: Do not use (traditional concern around stimulating menstruation/uterus) (Health Canada, n.d.). Breastfeeding: Health Canada advises talk to a healthcare professional first (Health Canada, n.d.). Kids: It’s often described as a “gentle” traditional tea, but large amounts are not a good idea—there’s a published case where a toddler became very sleepy/“slowed down” after consuming a lot. Keep catnip tea away from toddlers unless a clinician advises it (Osterhoudt et al., 1997). Sedatives / alcohol: Catnip can be calming, so don’t stack it with other sedating herbs/sleep meds/alcohol (you could get extra drowsy) (WebMD, n.d.a). Essential oil caution: Catnip essential oil is concentrated. Research notes it may cause mild skin irritation for some people—always dilute, patch test, and never treat it like “tea.” (Reichert et al., 2019)
Duke (2002) describes catnip primarily as a sedative, diaphoretic, and emmenagogue with experimental (score 1) support. It has demonstrated uterotonic and oxytocic activity, making it contraindicated in pregnancy. The active compounds include nepetalactone and iridoids. Catnip is classified as a mild nervine and antispasmodic in traditional North American herbal medicine, though clinical trials are lacking. Due to its emmenagogue and uterotonic properties, medicinal-dose use should be avoided during pregnancy (Duke, 2002).
External Ids
Botanical Description
Bushy annual or short-lived perennial herb (grown as an annual in temperate climates) with glossy, oval to lance-shaped leaves. Small, star-shaped, white to greenish flowers give way to the characteristic fleshy, hollow fruit (a berry), which ripens from green through yellow to red and varies enormously in size, shape and pungency between cultivars.[1]
Perennial herb, 30-100 cm tall, with greyish-green, downy, square stems typical of the mint family. Leaves are opposite, triangular-ovate with scalloped or toothed margins, grey-green above and softly felted (whitish) beneath, releasing a minty-lemony aroma when crushed. Small white flowers, spotted with purple or pink, are borne in dense terminal and axillary spikes. Nepetalactone, the volatile compound famous for its effect on cats, is concentrated in glandular hairs on the leaves and stems.[9]
Habitat
Native to Central and South America; cultivated worldwide in warm and temperate climates as a food and medicinal crop, thriving in full sun on well-drained soil.[1]
Native to Europe and temperate Asia and widely naturalised in North America; grows on disturbed, sunny ground - roadsides, waste places, hedgebanks and dry, calcareous or well-drained soils.[9]
Harvesting
Fruit is picked at the desired stage of ripeness (green for milder use, fully red for maximum capsaicin and carotenoid content) through summer and autumn; seeds are separated and dried from fully ripe fruit.
Traditional Uses
Chili pepper fruit has a long history across the Americas and, after global spread, in many other traditional medicine systems as a warming digestive stimulant and topical counterirritant/analgesic for muscle and joint pain, building on capsaicin's now well-documented ability to desensitise pain-sensing nerve fibres with repeated application.[1]
Catnip has a long North American and European folk-medicine history as a mild sedative/nervine, diaphoretic (fever-reducing, sweat-promoting) remedy, carminative digestive and traditional emmenagogue; it was also given as a children's tea for colic and restlessness, though large amounts are not advised for young children and it is traditionally avoided in pregnancy.[9]
Preparations
Standardised capsaicin cream or patch applied to the affected area for muscle, joint or nerve pain; repeated application depletes substance P and reduces pain signalling.
Dosage
The EU herbal monograph on Capsici fructus gives semi-solid dosage forms corresponding to 40-53 mg capsaicinoids per 100 g, applied as a thin layer to the affected area 2-4 times daily, in adults and elderly. For medicated plasters, a maximum of 1 plaster per day applied for at least 4 and up to 12 hours, with at least 12 hours before a new plaster is applied to the same area. Not recommended under 18 years. Expect an initial burning sensation that lessens with repeated use. Note the monograph covers hot chilli fruit (C. annuum var. minimum and small-fruited C. frutescens), not sweet peppers. Educational reference only, not a prescription.
Health Canada's NNHPD monograph gives 1.2-12 g of dried herb top per day for adults 18 years and older, with infusion among the accepted methods of preparation. Educational reference only, not a prescription. Keep away from toddlers and young children beyond very small amounts, and avoid medicinal-dose use in pregnancy.
References
Lookalikes Review
Drug Class Interactions
Not documented
References & Sources
- Cho, S.Y., Kim, H.W., Lee, M.K., Kim, H.J., Kim, J.B., Choe, J.S., Lee, Y.M. and Jang, H.H (2020) 'Antioxidant and anti-inflammatory activities in relation to the flavonoids composition of pepper (Capsicum annuum L.)', Antioxidants, 9(10), pp. 986. doi:10.3390/antiox9100986 Preclinical
https://doi.org/10.3390/antiox9100986 - Khan, F.A., Mahmood, T., Ali, M., Saeed, A. and Maalik, A (2014) 'Pharmacological importance of an ethnobotanical plant: Capsicum annuum L', Natural Product Research, 28(16), pp. 1267-1274. doi:10.1080/14786419.2014.895723 Meta-analysis / review
https://doi.org/10.1080/14786419.2014.895723 - Srinivasan, K (2016) 'Biological activities of red pepper (Capsicum annuum) and its pungent principle capsaicin: a review', Critical Reviews in Food Science and Nutrition, 56(9), pp. 1488-1500. doi:10.1080/10408398.2013.772090 Meta-analysis / review
https://doi.org/10.1080/10408398.2013.772090 - Hernandez-Perez, T., Gomez-Garcia, M.D.R., Valverde, M.E. and Paredes-Lopez, O (2020) 'Capsicum annuum (hot pepper): an ancient Latin-American crop with outstanding bioactive compounds and nutraceutical potential. A review', Comprehensive Reviews in Food Science and Food Safety, 19(6), pp. 2972-2993. doi:10.1111/1541-4337.12634 Meta-analysis / review
https://doi.org/10.1111/1541-4337.12634 - Sanati, S., Razavi, B.M. and Hosseinzadeh, H (2018) 'A review of the effects of Capsicum annuum L. and its constituent, capsaicin, in metabolic syndrome', Iranian Journal of Basic Medical Sciences, 21(5), pp. 439-448. doi:10.22038/IJBMS.2018.25200.6238 Meta-analysis / review
https://doi.org/10.22038/IJBMS.2018.25200.6238 - Mandal, S.K., Rath, S.K., Logesh, R., Mishra, S.K., Devkota, H.P. and Das, N (2023) 'Capsicum annuum L. and its bioactive constituents: a critical review of a traditional culinary spice in terms of its modern pharmacological potentials with toxicological issues', Phytotherapy Research, 37(3), pp. 965-1002. doi:10.1002/ptr.7660 Meta-analysis / review
https://doi.org/10.1002/ptr.7660 - Grojja, Y., Hajlaoui, H., Luca, S.V., Abidi, J., Skalicka-Wozniak, K., Zouari, S. and Bouaziz, M (2023) 'Untargeted phytochemical profiling, antioxidant, and antimicrobial activities of a Tunisian Capsicum annuum cultivar', Molecules, 28(17), pp. 6346. doi:10.3390/molecules28176346 Preclinical
https://doi.org/10.3390/molecules28176346 - Hernandez-Ortega, M., Ortiz-Moreno, A., Hernandez-Navarro, M.D., Chamorro-Cevallos, G., Dorantes-Alvarez, L. and Necoechea-Mondragon, H (2012) 'Antioxidant, antinociceptive, and anti-inflammatory effects of carotenoids extracted from dried pepper (Capsicum annuum L.)', Journal of Biomedicine and Biotechnology, 2012, pp. 524019. doi:10.1155/2012/524019 Preclinical
https://doi.org/10.1155/2012/524019 - Maji, A.K. and Banerji, P (2016) 'Phytochemistry and gastrointestinal benefits of the medicinal spice, Capsicum annuum L. (Chilli): a review', Journal of Complementary & Integrative Medicine, 13(2), pp. 97-122. doi:10.1515/jcim-2015-0037 Meta-analysis / review
https://doi.org/10.1515/jcim-2015-0037 - Marrelli, M., Menichini, F. and Conforti, F (2016) 'Hypolipidemic and antioxidant properties of hot pepper flower (Capsicum annuum L.)', Plant Foods for Human Nutrition, 71(3), pp. 301-306. doi:10.1007/s11130-016-0560-7 Preclinical
https://doi.org/10.1007/s11130-016-0560-7 - Song, C., Yu, C., Zhu, X., Luo, X., Zhang, Y., Meng, L., Luo, Y., Chang, H., Qin, C. and Liu, Y (2020) 'A new capsaicin-containing phenolic glycoside from Capsicum annuum L', Natural Product Research, 36(2), pp. 546-552. doi:10.1080/14786419.2020.1789983 Preclinical
https://doi.org/10.1080/14786419.2020.1789983 - European Medicines Agency (HMPC) (2015) 'European Union herbal monograph on Capsicum annuum L. var. minimum (Miller) Heiser and small fruited varieties of Capsicum frutescens L., fructus'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-capsicum-annuum-l-var-minimum-miller-heiser-and-small-fruited-varieties-capsicum-frutescens-l-fructus_en.pdf Traditional / reference
https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-capsicum-annuum-l-var-minimum-miller-heiser-and-small-fruited-varieties-capsicum-frutescens-l-fructus_en.pdf - Anand, P. and Bley, K (2011) 'Topical capsaicin for pain management: therapeutic potential and mechanisms of action of the new high-concentration capsaicin 8% patch', 107(4), pp. 490--502. doi:10.1093/bja/aer260 Clinical study
https://doi.org/10.1093/bja/aer260 - Basu, S. and Bhattacharyya, S (2023) 'Capsicum and capsaicin: a comprehensive review of chemistry, pharmacology, and therapeutic applications', 22(5), pp. 1413--1442. doi:10.1007/s11101-023-09875-8 Traditional / reference
https://doi.org/10.1007/s11101-023-09875-8 - Derry, S., Rice, A.S., Cole, P., Tan, T. and Moore, R.A (2017) 'Topical capsaicin (high concentration) for chronic neuropathic pain in adults'. doi:10.1002/http://14651858.CD007393.pub4 Randomized trial
https://doi.org/10.1002/http://14651858.CD007393.pub4 - Royal Botanic Gardens, Kew (n.d.) 'Capsicum annuum L'. Available at: https://powo.science.kew.org/taxon/urn:lsid:http://ipni.org:names:841033-1 Traditional / reference
https://powo.science.kew.org/taxon/urn:lsid:http://ipni.org:names:841033-1 - Molina-Torres, J., García-Chávez, A. and Ramírez-Chávez, E (1999) 'Antimicrobial properties of alkamides present in flavouring plants traditionally used in Mesoamerica', 64(3), pp. 241--248. doi:10.1016/S0378-8741(98)00131-4 Traditional / reference
https://doi.org/10.1016/S0378-8741(98)00131-4 - Lv, J., Qi, L., Yu, C. et al (2015) 'Consumption of spicy foods and total and cause specific mortality: population based cohort study'. doi:10.1136/bmj.h3942 Clinical study
https://doi.org/10.1136/bmj.h3942 - 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
- Geissler, M., Neubauer, C., Sheludko, Y.V. and Warzecha, H (2024) 'Nepeta cataria L. (catnip) can serve as a chassis for the engineering of secondary metabolic pathways', Biotechnology Letters, 46(5), pp. 843-850. doi:10.1007/s10529-024-03489-w Preclinical
https://doi.org/10.1007/s10529-024-03489-w - Lockhart, A., Simon, J.E. and Wu, Q (2024) 'Stability study of Nepeta cataria iridoids analyzed by LC/MS', Phytochemical Analysis, 35(7), pp. 1674-1687. doi:10.1002/pca.3410 Preclinical
https://doi.org/10.1002/pca.3410 - Nadeem, A., Shahzad, H., Ahmed, B., Muntean, T. and others (2022) 'Phytochemical profiling of antimicrobial and potential antioxidant plant: Nepeta cataria', Frontiers in Plant Science, 13, pp. 969316. doi:10.3389/fpls.2022.969316 Preclinical
https://doi.org/10.3389/fpls.2022.969316 - Tan, J., Li, J., Ma, J. and Qiao, F (2019) 'Hepatoprotective effect of essential oils of Nepeta cataria L. on acetaminophen-induced liver dysfunction', Bioscience Reports, 39(8), pp. BSR20190697. doi:10.1042/BSR20190697 Preclinical
https://doi.org/10.1042/BSR20190697 - Mollova, S., Dzhurmanski, A., Fidan, H., Bojilov, D. and others (2023) 'Chemical Composition of Essential Oils from Nepeta cataria L. Cultivated in Bulgaria and Their Antimicrobial and Antioxidant Activity', ACS Omega, 8(17), pp. 15441-15449. doi:10.1021/acsomega.3c00704 Preclinical
https://doi.org/10.1021/acsomega.3c00704 - Reichert, W., Ejercito, J., Guda, T., Dong, X. and others (2019) 'Repellency Assessment of Nepeta cataria Essential Oils and Isolated Nepetalactones on Aedes aegypti', Scientific Reports, 9(1), pp. 1524. doi:10.1038/s41598-018-36814-1 Preclinical
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https://doi.org/10.1002/cbdv.202200241 - Giarratana, F., Muscolino, D., Ziino, G., Lo Presti, V. and others (2017) 'Activity of Catmint (Nepeta cataria) essential oil against Anisakis larvae', Tropical Biomedicine, 34(1), pp. 22-31. Available at: https://pubmed.ncbi.nlm.nih.gov/33592976/ Preclinical
https://pubmed.ncbi.nlm.nih.gov/33592976/ - Sarkar, M., Rashmi, R., Vikramaditya and Varma, P.N (1995) 'Pharmacognosy of Nepeta cataria', Ancient Science of Life, 14(4), pp. 225-234. Available at: https://pubmed.ncbi.nlm.nih.gov/22556702/ Traditional / reference
https://pubmed.ncbi.nlm.nih.gov/22556702/ - Bernardi, M.M., Kirsten, T.B., Lago, J.H.G., Giovani, T.M. and Massoco, C.O (2011) 'Nepeta cataria L. var. citriodora (Becker) increases penile erection in rats', Journal of Ethnopharmacology, 137(3), pp. 1318-1322. doi:10.1016/j.jep.2011.07.061 Preclinical
https://doi.org/10.1016/j.jep.2011.07.061 - Health Canada, Natural and Non-prescription Health Products Directorate (2026) 'Natural Health Product Monograph: Catnip - Nepeta cataria'. Available at: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/dbImages/mono_catnip_english.pdf Traditional / reference
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https://scholar.google.com/scholar?q=British%20Herbal%20Pharmacopoeia - Gilani, A.H., Shah, A.J., Zubair, A., Khalid, S., Kiani, J., Ahmed, A., Rasheed, M. and Ahmad, V.U (2009) 'Chemical composition and mechanisms underlying the spasmolytic and bronchodilatory properties of the essential oil of Nepeta cataria L', 121(3), pp. 405--411. doi:10.1016/j.jep.2008.11.004 Traditional / reference
https://doi.org/10.1016/j.jep.2008.11.004 - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - 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 - 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
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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.