Amitriptyline versus Trifluoperazine for functional dyspepsia

Effect of Amitriptyline and Trifluoperazine on Patients With Functional Dyspepsia

Phase2; Phase3 Interventional Dhaka Medical College · NCT07008235

This trial will test whether adding low‑dose amitriptyline or trifluoperazine to standard treatment helps adults with functional dyspepsia feel better over 8 weeks.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Enrollment120 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorDhaka Medical College Academic / other
Locations1 site (Dhaka)
Trial IDNCT07008235 on ClinicalTrials.gov

What this trial studies

Adults with functional dyspepsia will be assigned to one of three groups: amitriptyline 10 mg at night plus standard first‑line therapy, trifluoperazine 1 mg twice daily plus standard therapy, or standard therapy alone for 8 weeks. Symptom changes and patient‑reported adverse events will be recorded to compare benefit and safety between the groups. After the 8‑week treatment period, all groups will be followed according to the protocol described by the investigators. The trial focuses on symptomatic improvement using established dyspepsia criteria and routine safety monitoring.

Who should consider this trial

Good fit: Adults aged 18 or older with symptoms meeting Rome IV criteria for functional dyspepsia who can give informed consent and attend study visits are ideal candidates.

Not a fit: Patients with structural upper GI disease, major medical or psychiatric comorbidities, current use of antidepressants or antipsychotics, prior hypersensitivity to the study drugs, or needing contraindicated co‑medications are unlikely to benefit from participation.

Why it matters

Potential benefit: If successful, adding one of these low‑dose neuromodulators could reduce dyspepsia symptoms and improve daily comfort for patients.

How similar studies have performed: Low‑dose tricyclics such as amitriptyline have shown benefit in some functional GI disorder studies, while trifluoperazine is less well studied for functional dyspepsia.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 years or more
* Patients with symptoms of dyspepsia for duration consisted with ROME IV criteria
* Patients who are willing to sign informed written consent

Exclusion Criteria:

* Structural lesion in Upper GI endoscopy and/or positive CLO test
* Patients scoring 1 or 2 on the 5-point Likert scale for all four dyspepsia symptoms
* History of malignancy, significant liver and biliary tract disease, hypertension, diabetes mellitus, chronic kidney disease, thyroid disorder, major psychiatric disorders
* Previous history of gastrointestinal surgery
* Patients those have to take any drug for other medical condition that may cause dyspepsia, can interfere or whose co-prescription is contraindicated with amitriptyline or trifluoperazine
* Any patient with ongoing treatment with antidepressants or antipsychotics
* Any history of hypersensitivity, adverse effect, or ineffectiveness with amitriptyline or trifluoperazine
* Patients for whom Amitriptyline and Trifluoperazine are contraindicated
* Elderly patients\> 60 years
* Pregnancy and breastfeeding

Where this trial is running

Dhaka

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Functional DyspepsiaAmitriptylineTrifluoperazineNeuromodulatorDGBIDisorders of Gut Brain InteractionROME IV5-point Likert Scale
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.