Evidence map›Paper›PMID 34468079›Full record

Trial reportUnited European gastroenterology journal2021

A trial-based economic evaluation of peppermint oil for the treatment of irritable bowel syndrome.

Zsa Zsa R M Weerts, Brigitte A B Essers, Daisy M A E Jonkers, Jeresa I A Willems, Deborah J P A Janssen, Ben J M Witteman, Cees H M Clemens, Audrey Westendorp, Ad A M Masclee, Daniel Keszthelyi

Registry-linked trialAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in United European gastroenterology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02716285 (Peppermint Oil for the Treatment of Irritable Bowel Syndrome), which is not on this map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02716285 phase3completednot on this map

Peppermint Oil for the Treatment of Irritable Bowel Syndrome: Optimizing Therapeutic Strategies Using Targeted Delivery

TypeinterventionalSponsorMaastricht University Medical CenterRan2016 to 2018Enrolled190ConditionsIrritable Bowel Syndrome, Abdominal Pain, Colonic Diseases, FunctionalArmsIleocolonic release peppermint oil, Placebo, Small intestinal release peppermint oil
3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Trial
  2. Peppermint oil-associated hepatotoxicity.Journal of hepatology · 2025
    Article
  3. Investigating the Health Potential ofPharmaceuticals (Basel, Switzerland) · 2025
    Review
  4. Review
  5. Management of irritable bowel syndrome: a narrative review.Translational gastroenterology and hepatology · 2024
    Review
  6. UEG journal's editorial team.United European gastroenterology journal · 2022
    Article
  7. UEG week and UEG journal: A strong scientific liaison.United European gastroenterology journal · 2022
    Article
  8. New mint on the block - Fresh hope for IBS treatment?United European gastroenterology journal · 2021
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Zsa Zsa R M WeertsDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0001-7522-9916
Brigitte A B EssersDepartment of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0002-7703-7114
Daisy M A E JonkersDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0001-8981-8965
Jeresa I A WillemsDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0001-8478-3177
Deborah J P A JanssenDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.
Ben J M WittemanDivision of Human Nutrition, Wageningen University, Wageningen, The Netherlands.ORCID 0000-0002-1341-8540
Cees H M ClemensDepartment of Gastroenterology, Alrijne Zorggroep, Leiden, The Netherlands.ORCID 0000-0002-5460-7014
Audrey WestendorpDepartment of Gastroenterology and Hepatology, Medical Center Leeuwarden, Leeuwarden, The Netherlands.
Ad A M MascleeDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0001-5819-0116
Daniel KeszthelyiDivision of Gastroenterology-Hepatology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands.ORCID 0000-0001-9856-9980

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIrritable Bowel Syndrome (IBS) is a prevalent, chronic gastrointestinal disorder that imposes a substantial socioeconomic burden. Peppermint oil is a frequently used treatment for IBS, but evidence about cost-effectiveness is lacking.

objectiveWe aimed to assess cost-effectiveness of small-intestinal release peppermint oil versus placebo in IBS patients.

methodsIn a multicenter randomized placebo-controlled trial, cost-effectiveness was evaluated from a societal perspective. The incremental cost-effectiveness ratios (ICERs) were expressed as (1) incremental costs per Quality Adjusted Life Years (QALY), and (2) incremental costs per successfully treated patient, that is per abdominal pain responder (according to FDA definitions), both after an eight-week treatment period with placebo versus peppermint oil. Cost-utility and uncertainty were estimated using non-parametric bootstrapping. Sensitivity analyses were performed.

resultsThe analysis comprised 126 patients (N = 64 placebo, N = 62 small-intestinal release peppermint oil). Peppermint oil was a dominant treatment compared to placebo in 46% of bootstrap replications. Peppermint oil was also more effective but at higher cost in 31% of replications. The net-benefit acceptability curve showed that peppermint oil has a 56% probability of being cost-effective at a conservative willingness-to-pay threshold of €10.000/QALY. Peppermint oil was also a dominant treatment per additional successfully treated patient according to FDA definitions, that is in 51% of replications. In this case, the acceptability curve showed an 89% probability of being cost-effective.

conclusionsIn patients with IBS, small-intestinal release peppermint oil appears to be a cost-effective treatment although there is uncertainty surrounding the ICER. When using abdominal pain responder as outcome measure for the ICER, peppermint oil has a high probability of being cost-effective. The use of peppermint oil, which is a low-cost treatment, can be justified by the modest QALY gains and slightly higher proportion of abdominal pain responders. More research and long-term data are necessary to confirm the cost-effectiveness of peppermint oil. NCT02716285.

Indexed as

Abdominal PainAdultAgedCost-Benefit AnalysisDouble-Blind MethodFemaleHumansIrritable Bowel SyndromeMaleMentha piperitaMiddle AgedParasympatholyticsPlant OilsQuality-Adjusted Life YearsSensitivity and SpecificityStatistics, NonparametricParasympatholyticspeppermint oilPlant OilsAbdominal paincost-effectivenesseconomic burdenICERirritable bowel syndromepeppermint oilQALY

Identifiers

PMID34468079
PMCPMC8598953

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.