Skip to content

Efficacy of peppermint oil versus placebo in treatment of functional dyspepsia: A multicenter randomized controlled trial

Efficacy of peppermint oil versus placebo in treatment of functional dyspepsia: A multicenter randomized controlled trial

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
TCTR
Registry ID
TCTR20250802001
Enrollment
90
Registered
2025-08-02
Start date
2024-10-01
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Functional dyspepsia Dyspepsia Peppermint Oil Phytotherapy Placebos Randomized Controlled Trial Double-Blind Method

Interventions

Participants will receive peppermint oil capsules at a dose of 187 milligrams, to be taken one capsule three times daily, 15 minutes before meals for 28 days period,Participants will receive placebo c
Active Comparator Drug,Placebo Comparator Drug
Peppermint oil,Placebo

Sponsors

Department of medicine, Phramongkutklao Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
20 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Patients aged between 20 and 80 years. 2. Patients presenting with symptoms consistent with functional dyspepsia according to the Rome IV criteria, with a symptom duration of at least 4 weeks. All patients must have undergone esophagogastroduodenoscopy (EGD) and tested negative for Helicobacter pylori infection. 3. Patients who provide informed consent to participate in the study.

Exclusion criteria

Exclusion criteria: 1. Evidence of any organic disease that may explain the patient's symptoms 2. Patients presenting with upper gastrointestinal bleeding 3. Patients with confirmed Helicobacter pylori infection who have not received eradication therapy 4. Patients with jaundice, defined as total bilirubin greater than 2 mg per dL 5. Patients with anemia, defined as hemoglobin less than 10 g per dL 6. Patients with chronic kidney disease stage 4 or higher, defined as a glomerular filtration rate less than 30 mL per minute per 1.73 square meters 7. Patients with a history of gastric surgery, gastric bypass surgery, or gastrointestinal malignancy 8. Patients with a history of using nonsteroidal anti-inflammatory drugs, aspirin, or other antiplatelet agents within the past four weeks 9. Patients who have used proton pump inhibitors or prokinetic agents within the past two weeks 10. Pregnant women or those planning to become pregnant 11. Patients with a known allergy to peppermint or peppermint oil 12. Patients with symptoms suggestive of irritable bowel syndrome

Design outcomes

Primary

MeasureTime frame
Dyspepsia at day 0, day 14 and day 28 of treatment SODA (severity of dyspepsia assessment)

Secondary

MeasureTime frame
Quality of life at day 0 and day 28 of treatment EQ-5D-5L questionnaire

Countries

Thailand

Contacts

Public ContactPatranit Nuntasilapachai

Phramongkutklao hospital

patranit.nu@pmk.ac.th027633278

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026