Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis

BackgroundCurcuma longa L. (turmeric, Zingiberaceae) has been traditionally used for its anti-inflammatory, wound-healing, and antimicrobial properties. These characteristics have made it a key component in managing inflammatory and ulcerative conditions like oral mucositis (OM). This study aimed to...

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Main Authors: Pedro de Padua G. Amatto, Lucas Chaves, Suzelei de Castro França, José Carlos Tavares Carvalho, Fabio Carmona, Ana Maria Soares Pereira
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-04-01
Series:Frontiers in Pharmacology
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Online Access:https://www.frontiersin.org/articles/10.3389/fphar.2025.1560729/full
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author Pedro de Padua G. Amatto
Lucas Chaves
Suzelei de Castro França
José Carlos Tavares Carvalho
Fabio Carmona
Ana Maria Soares Pereira
Ana Maria Soares Pereira
author_facet Pedro de Padua G. Amatto
Lucas Chaves
Suzelei de Castro França
José Carlos Tavares Carvalho
Fabio Carmona
Ana Maria Soares Pereira
Ana Maria Soares Pereira
author_sort Pedro de Padua G. Amatto
collection DOAJ
description BackgroundCurcuma longa L. (turmeric, Zingiberaceae) has been traditionally used for its anti-inflammatory, wound-healing, and antimicrobial properties. These characteristics have made it a key component in managing inflammatory and ulcerative conditions like oral mucositis (OM). This study aimed to evaluate the effectiveness of various pharmaceutical formulations of C. longa or curcumin in reducing the OM severity, incidence and associated pain in patients undergoing chemotherapy and/or radiotherapy for cancer.MethodsThis systematic review and meta-analysis of randomized clinical trials was conducted according to PRISMA guidelines, registered in PROSPERO (#CRD42024504111). Searches were performed in PubMed, Embase, and Cochrane databases. Studies comparing C. longa or curcumin with placebo in cancer patients experiencing oral mucositis, reporting outcomes such as the World Health Organization Oral Mucositis Grading Scale, pain scores (visual analogue scale), or OM incidence were included. Risk ratios and weighted mean differences with 95% confidence intervals were calculated using fixed- or random-effects models.ResultsSix studies with 159 patients (mean age ∼50 years, 40% women) were included. C. longa extracts, curcumin, or nanocurcumin were administered in capsules, mouthwash, or gel formulations. The pooled analysis showed significant reductions in WHO scores and oral pain compared to placebo. OM incidence decreased by 6% overall, with a notable 37%-reduction observed in patients using curcumin-containing mouthwash during radiotherapy alone. Subgroup analyses revealed consistent benefits across all oncological treatments.ConclusionC. longa, curcumin, or nanocurcumin in various formulations, effectively reduce OM severity and pain while curcumin-containing mouthwash reduced OM incidence in cancer patients undergoing treatment.Systematic Review Registrationidentifier CRD 42024504111.
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spelling doaj-art-7fcca453883f45009ed779bea82bfeec2025-08-20T03:09:48ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122025-04-011610.3389/fphar.2025.15607291560729Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysisPedro de Padua G. Amatto0Lucas Chaves1Suzelei de Castro França2José Carlos Tavares Carvalho3Fabio Carmona4Ana Maria Soares Pereira5Ana Maria Soares Pereira6Department of Biotechnology in Medicinal Plants, University of Ribeirão Preto, Ribeirão Preto, São Paulo, BrazilRibeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, BrazilDepartment of Biotechnology in Medicinal Plants, University of Ribeirão Preto, Ribeirão Preto, São Paulo, BrazilDepartment of Biological and Health Sciences, Federal University of Amapá, Macapá, Amapá, BrazilRibeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, BrazilDepartment of Biotechnology in Medicinal Plants, University of Ribeirão Preto, Ribeirão Preto, São Paulo, BrazilBotanical Garden of Medicinal Plants Ordem e Progresso, Jardinópolis, BrazilBackgroundCurcuma longa L. (turmeric, Zingiberaceae) has been traditionally used for its anti-inflammatory, wound-healing, and antimicrobial properties. These characteristics have made it a key component in managing inflammatory and ulcerative conditions like oral mucositis (OM). This study aimed to evaluate the effectiveness of various pharmaceutical formulations of C. longa or curcumin in reducing the OM severity, incidence and associated pain in patients undergoing chemotherapy and/or radiotherapy for cancer.MethodsThis systematic review and meta-analysis of randomized clinical trials was conducted according to PRISMA guidelines, registered in PROSPERO (#CRD42024504111). Searches were performed in PubMed, Embase, and Cochrane databases. Studies comparing C. longa or curcumin with placebo in cancer patients experiencing oral mucositis, reporting outcomes such as the World Health Organization Oral Mucositis Grading Scale, pain scores (visual analogue scale), or OM incidence were included. Risk ratios and weighted mean differences with 95% confidence intervals were calculated using fixed- or random-effects models.ResultsSix studies with 159 patients (mean age ∼50 years, 40% women) were included. C. longa extracts, curcumin, or nanocurcumin were administered in capsules, mouthwash, or gel formulations. The pooled analysis showed significant reductions in WHO scores and oral pain compared to placebo. OM incidence decreased by 6% overall, with a notable 37%-reduction observed in patients using curcumin-containing mouthwash during radiotherapy alone. Subgroup analyses revealed consistent benefits across all oncological treatments.ConclusionC. longa, curcumin, or nanocurcumin in various formulations, effectively reduce OM severity and pain while curcumin-containing mouthwash reduced OM incidence in cancer patients undergoing treatment.Systematic Review Registrationidentifier CRD 42024504111.https://www.frontiersin.org/articles/10.3389/fphar.2025.1560729/fullturmericanti-inflammatory agentschemotherapy-induced mucositisradiotherapy side effectsherbal medicine
spellingShingle Pedro de Padua G. Amatto
Lucas Chaves
Suzelei de Castro França
José Carlos Tavares Carvalho
Fabio Carmona
Ana Maria Soares Pereira
Ana Maria Soares Pereira
Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
Frontiers in Pharmacology
turmeric
anti-inflammatory agents
chemotherapy-induced mucositis
radiotherapy side effects
herbal medicine
title Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
title_full Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
title_fullStr Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
title_full_unstemmed Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
title_short Efficacy of different pharmaceutical forms of Curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients: a systematic review and meta-analysis
title_sort efficacy of different pharmaceutical forms of curcuma longa or curcumin in reducing oral mucositis severity and incidence in cancer patients a systematic review and meta analysis
topic turmeric
anti-inflammatory agents
chemotherapy-induced mucositis
radiotherapy side effects
herbal medicine
url https://www.frontiersin.org/articles/10.3389/fphar.2025.1560729/full
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