--- topic: "Plantain Leaf" title: "Plantain Leaf: Wounds, Coughs, and Bites" order: 1 description: "Plantain leaf, the common lawn weed, for wounds, coughs and insect bites: what small human trials show, what they leave out, and who should be careful." question: "Does plantain leaf (the weed) help wounds, coughs, and insect bites?" answer: "It may speed healing of some wounds and ease coughs in small trials; insect bites and fresh-leaf poultices have not been tested." actions: - "Treat plantain as an extra, not a replacement: in the wound trials, plantain gel was added to routine care, not used instead of it [1][2]." - "For cough, plantain syrup is the best-tested form: one 80-adult acute-bronchitis trial found less cough after 10 days [3]; see a clinician if it lasts over two weeks." - "If you pick your own, identify the plant with certainty, avoid roadsides, sprayed lawns and pet areas, and wash it well; otherwise buy a labeled product." cautions: - "Hay fever or pollen allergy? Plantain pollen sensitized 31% of 372 allergy patients in a Portuguese study [4], one case report describes contact dermatitis [5]; test a small patch first." - "Diabetic foot ulcers, pressure sores, deep or infected wounds and animal bites need medical care; plantain was tested only as an add-on [1][2]." - "Pregnant, breastfeeding, or treating a child? Safety data are lacking, so ask a clinician first." confidence: 2 confidenceNote: "Several small randomized trials, mostly from Iran and mostly of standardized extracts, point the same way, but none tests fresh leaf poultices, bites or stings." evidenceSummary: rctCount: 6 observationalCount: 2 metaAnalysisCount: 0 totalParticipants: "440+" replicated: false newestStudyYear: 2024 references: - id: "1" pmid: "35044254" title: "The Effect of Plantago major Hydroalcoholic Extract on the Healing of Diabetic Foot and Pressure Ulcers: A Randomized Open-Label Controlled Clinical Trial" authors: "Ghanadian M, Soltani R, Homayouni A, et al." year: 2024 journal: "Int J Low Extrem Wounds" - id: "2" pmid: "29336265" title: "Efficacy of Aloe vera/ Plantago Major Gel in Diabetic Foot Ulcer: A Randomized Double-Blind Clinical Trial" authors: "Najafian Y, Khorasani ZM, Najafi MN, et al." year: 2019 journal: "Curr Drug Discov Technol" - id: "3" pmid: "39359439" title: "Effect of Plantago major on cough severity in acute bronchitis: A double-blind randomized clinical trial" authors: "Naderi A, Mozaffarpur SA, Shirafkan H, et al." year: 2024 journal: "Caspian J Intern Med" - id: "4" pmid: "25011355" title: "Identification of Plantago lanceolata pollen allergens using an immunoproteomic approach" authors: "Sousa R, Osório H, Duque L, et al." year: 2014 journal: "J Investig Allergol Clin Immunol" - id: "5" pmid: "19338603" title: "Acute irritant contact dermatitis caused by Plantago major" authors: "Erdem T, Caferoğlu Sakat S, Ismail Engin R, et al." year: 2009 journal: "Contact Dermatitis" - id: "6" pmid: "32507421" title: "Efficacy of the plantago major L. syrup on radiation induced oral mucositis in head and neck cancer patients: A randomized, double blind, placebo-controlled clinical trial" authors: "Soltani GM, Hemati S, Sarvizadeh M, et al." year: 2020 journal: "Complement Ther Med" - id: "7" pmid: "29353631" title: "Efficacy of Plantago major, chlorhexidine 0.12% and sodium bicarbonate 5% solution in the treatment of oral mucositis in cancer patients with solid tumour: A feasibility randomised triple-blind phase III clinical trial" authors: "Cabrera-Jaime S, Martínez C, Ferro-García T, et al." year: 2018 journal: "Eur J Oncol Nurs" - id: "8" pmid: "10904143" title: "The traditional uses, chemical constituents and biological activities of Plantago major L. A review" authors: "Samuelsen AB" year: 2000 journal: "J Ethnopharmacol" - id: "9" pmid: "12076751" title: "Antiviral activity of Plantago major extracts and related compounds in vitro" authors: "Chiang LC, Chiang W, Chang MY, et al." year: 2002 journal: "Antiviral Res" - id: "10" pmid: "33548748" title: "Clinical and phytochemical studies of Plantago major in pressure ulcer treatment: A randomized controlled trial" authors: "Ghiasian M, Niroomandi Z, Dastan D, et al." year: 2021 journal: "Complement Ther Clin Pract" - id: "11" pmid: "10483683" title: "[Plantain (Plantago lanceolata L.): anti-inflammatory action in upper respiratory tract infections]" authors: "Wegener T, Kraft K" year: 1999 journal: "Wien Med Wochenschr" --- Plantain leaf comes from two common lawn weeds, broadleaf and narrowleaf plantain (*Plantago major* and *P. lanceolata*), not the banana-like fruit. Small trials, mostly in Iran, found that plantain gels helped chronic ulcers heal faster and that a syrup eased acute bronchitis cough [1][3]. Results for mouth sores conflict [6][7]. No trial has tested insect bites or a fresh-leaf poultice. ## How it works People have used plantain leaves as a wound remedy for centuries in most parts of the world. Laboratory work finds anti-inflammatory, analgesic, weak antibiotic and immune-modulating activity in the leaf [8]. In a lab dish, the aqueous extract was only slightly active against herpes viruses, while single compounds such as caffeic acid were far stronger; that says nothing yet about people [9]. **What human trials show** - *Wounds.* Three randomized trials tested plantain gels in chronic wounds. A 10% extract gel, applied once daily for two weeks beside routine care, shrank diabetic foot and pressure ulcers faster than a modern dressing [1]. A plantain-aloe gel improved diabetic foot ulcer scores against a placebo gel over four weeks [2], and a plantain formulation helped stage 1 pressure ulcers resolve in 130 patients [10]. - *Coughs.* A syrup of *P. major*, 30 ml a day for 10 days, reduced cough, sputum and chest pain in 80 adults with acute bronchitis [3]. An older German review of narrowleaf plantain found few clinical data but supported its use for moderate irritative cough [11]. - *Mouth sores.* A syrup lowered radiation mucositis severity and pain in 46 head and neck cancer patients [6], but in a separate chemotherapy trial plantain did not heal mucositis faster than a simple bicarbonate rinse (about 7 versus 5 days, not significant) [7]. - *Insect bites and stings.* We found no human trial. The folk method of crushing a leaf and pressing it on is plausible but unproven. **Using it sensibly.** Trials used standardized gels, extracts and syrups, not fresh leaves, so their results do not transfer neatly to a kitchen poultice. Clean any wound first, and see a clinician for anything deep, spreading, hot or draining. Plantain leaf is a different plant from the cooking fruit; see [plantains](/plantains/resistant-starch-blood-sugar-and-gut-health). It is also a relative of the seed fiber in [psyllium husk](/psyllium-husk/fiber-for-gut-and-heart), and for a better-studied wound plant see [aloe vera](/aloe-vera/healing-plant). ## The evidence in detail ### Wound trials Ghanadian and colleagues randomized patients with diabetic foot or pressure ulcers to a 10% *P. major* extract gel once daily or a modern dressing, both with routine care, for two weeks; 50 and 44 patients completed. Wound size fell 64.9% versus 33.1% at one week and 86.9% versus 52.9% at two weeks (both P<0.001), and complete healing occurred in 64% versus 20.5% (odds ratio 3.13, 95% CI 1.69 to 5.81). The trial was open-label and the comparator was a dressing, not a placebo, so bias is likely to favor the gel [1]. Najafian and colleagues gave 40 diabetic foot ulcer patients a plantain-aloe gel or placebo gel twice daily for four weeks. Total ulcer score (P<0.001) and ulcer surface (P=0.039) improved, but depth did not (P=0.263). Because the gel combined two plants, plantain's own contribution is unknown [2]. Ghiasian and colleagues ran a triple-blind trial in 130 patients with stage 1 pressure ulcers. After 14 days, resolution of the damage differed significantly in favor of a quercetin-standardized topical formulation, with no side effects reported [10]. ### Cough trial In Naderi's double-blind trial, 80 adults (aged 20 to 75) with acute bronchitis and a Bronchitis Severity Scale score of 5 or more received *P. major* syrup or placebo, 30 ml a day for 10 days. Day-10 scores were lower with the syrup (P=0.001), as were cough frequency (P=0.001), sputum (P=0.005) and chest-wall pain (P=0.008). Quality-of-life scores improved, and no significant adverse effects were reported [3]. Acute bronchitis usually resolves by itself, the trial was single-center, and no one has replicated it. For narrowleaf plantain, the older review said clinical data were few and based its recommendation on a favorable benefit-risk balance [11]. ### Conflicting results in mouth sores Soltani and colleagues randomized 46 head and neck cancer patients to syrup or placebo during seven weeks of radiotherapy: mucositis severity and pain were lower with the syrup (P<0.05) [6]. Cabrera-Jaime and colleagues randomized 50 chemotherapy patients with grade II to III mucositis to a bicarbonate rinse plus either extra bicarbonate, plantain extract or chlorhexidine. Healing took about 5 days with bicarbonate and 7 days with plantain or chlorhexidine; differences were not significant and neither was pain (P=0.762). The authors suggested reconsidering plantain for this use [7]. ### Laboratory and traditional evidence A review of the traditional uses of *P. major* describes wound healing, skin, respiratory and digestive uses worldwide, with lab activity that may account for folk use, but also notes the antibiotic activity is weak [8]. In cells, the plant's aqueous extract showed only slight anti-herpes activity, and caffeic acid had the strongest effect against HSV-1 and adenovirus type 3 [9]. These are test-tube findings, not clinical evidence. ### Safety Among 372 patients with seasonal respiratory allergy in Porto, 115 (31%) had specific IgE to *P. lanceolata* pollen [4]. That is pollen sensitization rather than leaf contact allergy, but it argues for caution. A published case describes acute irritant contact dermatitis from *P. major* [5]. Safety in pregnancy and young children has not been studied that we could find. ### Gaps Every wound and cough trial used a standardized product; none tested fresh leaves or insect bites. Most come from one region, several are open-label or combine plants, and nearly all report benefit, which can reflect publication bias or small-study effects. **Bottom line (confidence 2 of 5).** Plantain has a plausible mechanism and several small positive trials for chronic wounds and cough, but the evidence is thin, regionally concentrated and not tested in the way people use it at home. Treat it as a soothing extra, not a treatment.