Evidence map›Paper›PMID 26319955›Full record

Trial reportDigestive diseases and sciences2016

A Novel Delivery System of Peppermint Oil Is an Effective Therapy for Irritable Bowel Syndrome Symptoms.

Brooks D Cash, Michael S Epstein, Syed M Shah

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Digestive diseases and sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 5 pooled it
10.6field-weighted citation impact, top 1% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 5 syntheses or guidelines pooled it, 155 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Trial
  7. The Effect of Peppermint (Integrative cancer therapies
    Trial
  8. Review
  9. Irritable bowel syndrome.Nature reviews. Disease primers · 2026
    Review
  10. Review
  11. Article
  12. Review
  13. Expert Opinion on the Efficacy and Safety of Antispasmodics with a Focus on Irritable Bowel Syndrome.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2025
    Review
  14. Article
  15. Article
  16. Investigating the Health Potential ofPharmaceuticals (Basel, Switzerland) · 2025
    Review
  17. Article
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Brooks D CashDivision of Gastroenterology, University of South Alabama, 6000 University Commons, 75 University Blvd, S, Mobile, AL, 36688, USA. bcash@health.southalabama.edu.ORCID http://orcid.org/0000-0002-8497-3349
Michael S EpsteinDigestive Disorders Associates, 621 Ridgely Ave, #201, Annapolis, MD, 21401, USA. michael.epstein@dda.net.
Syed M ShahIM HealthScience LLC, 101 Plaza Real South, Ste 205-S, Boca Raton, FL, 33432, USA. sshah@imhealthscience.com.
InterScience (United States) · USMichael & Associates · USUniversity of South Alabama · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPeppermint oil (PO) has shown promise as an IBS therapy, but previous trials have demonstrated variable efficacy and tolerability results.

aimsTo evaluate the efficacy and tolerability of a novel formulation of PO designed for sustained release in the small intestine in patients with IBS-M and IBS-D.

methodsThis is a 4-week, randomized, double-blind, placebo-controlled clinical trial of PO or identical placebo 3 times daily in patients fulfilling Rome III criteria for IBS-M or IBS-D. The primary endpoint was the change from baseline in the Total IBS Symptom Score (TISS) after 4 weeks of treatment.

resultsSeventy-two patients (mean age 40.7 years, 75 % female, 77.8 % white) were randomized to PO (n = 35) or placebo (n = 37). At 4 weeks, PO was associated with a 40 % reduction in the TISS from baseline (mean change -1.16, SD ± 0.807), superior to the 24.3 % decrease (mean change -0.70, SD ± 0.737) observed with placebo (P = 0.0246). The decrease in the TISS of 19.6 % (mean change -0.55, SD ± 0.613) in the PO group at 24 h was also significantly larger than placebo (-10.3 %, mean change -0.27, SD ± 0.342) (P = 0.0092). At trial completion, patients in the PO group experienced greater improvement in multiple individual gastrointestinal symptoms as well as in severe or unbearable symptoms, compared to placebo. PO was well tolerated with few adverse events.

conclusionsA novel PO formulation designed for sustained release in the small intestine is a safe, effective treatment capable of providing rapid relief of IBS symptoms.

Indexed as

AdultDouble-Blind MethodFemaleHumansIrritable Bowel SyndromeMaleMentha piperitaMiddle AgedParasympatholyticsPlant OilsParasympatholyticspeppermint oilPlant OilsAbdominal painBloatingDiarrheaIrritable bowel syndromeL-mentholPeppermint oil

Identifiers

PMID26319955
PMCPMC4729798
OpenAlexW1934158149

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.