Abstract
Objective: To evaluate the efficacy of peppermint oil (Mentha piperita L.) on individuals diagnosed with irritable bowel syndrome (IBS) regarding symptom improvement and quality of life enhancement. Methods: Literature search was conducted according to evidence based on methodology review at Trip database, National Guideline Clearinghouse, Guidelines finder, Cochrane Library, Dare, Bandolier and Medline, as well as using the MeSH index terms “Irritable bowel syndrome” and “peppermint oil”. We selected practice guidelines, systematic reviews, meta-analysis and randomized controlled trials that evaluated peppermint oil (PO) efficacy in improving symptoms and/or quality of life when compared to placebo or other approved therapy for IBS. Results and Discussion: A total of eight articles were selected including five practice guidelines and three systematic reviews/ meta-analysis. Existing evidence suggests that there are enough data to support the use of peppermint oil in IBS for overall symptomatic relief, especially when abdominal pain is the dominant symptom, when compared to placebo (with an odds ratio of 2.7; CI 95%, 1.6 to 4.8 and NNT of 3). There is also evidence regarding overall quality of life improvement when using PO compared to placebo (p<0.001). Conclusion: So far, evidence suggests that PO should be considered for IBS patients, especially in the presence of abdominal pain (Strength of recommendation B). However, more high methodological quality studies that evaluate long-term efficacy and security of PO are needed.
Highlights
on individuals diagnosed with irritable bowel syndrome
Literature search was conducted according to evidence based on methodology review
efficacy in improving symptoms and/or quality of life when compared to placebo
Summary
Análise da eficácia do óleo de hortelã pimenta (Mentha piperita L.) na síndrome do intestino irritável: revisão baseada em evidência. Objetivo: Avaliar a eficácia do óleo de hortelã-pimenta (Mentha piperita L) no tratamento de indivíduos com síndrome do intestino irritável (SII), analisando a melhora dos sintomas e da qualidade de vida. Foram incluídas normas de orientação clínica (NOC), revisões sistemáticas e metanálises e ensaios clínicos aleatorizados e controlados (ECAC) que avaliassem a eficácia do óleo de hortelã-pimenta (OHP) no alívio sintomático ou melhoria da qualidade de vida de indivíduos com SII, quando comparado com placebo ou outra terapêutica validada. A evidência sugere que o OHP é eficaz no alívio sintomático global da SII, especialmente quando existe dor abdominal, verificando-se a sua superioridade em relação ao placebo na maioria dos estudos avaliados – com odds ratio favorecendo o óleo de hortelã-pimenta atingindo 2,7 (IC de 95% de 1,6 a 4,8) e NNT de 3. Palavras-chave: Síndrome do Intestino Irritável Óleo de Hortelã-pimenta Fitoterapia Preparações de Plantas
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