Using Montelukast to Prevent Liver Issues in Adult Dengue Patients

Efficacy of Montelukast in Preventing Transaminase Elevation in Adult Dengue Patients: a Randomized, Double-blind, Placebo Controlled, Superiority Trial

PHASE2; PHASE3 · Phramongkutklao College of Medicine and Hospital · NCT06747130

This study is testing if the medication montelukast can help prevent liver problems in adults with dengue fever.

Quick facts

PhasePHASE2; PHASE3
Study typeInterventional
Enrollment82 (estimated)
Ages20 Years and up
SexAll
SponsorPhramongkutklao College of Medicine and Hospital (other)
Locations1 site (Bangkok)
Trial IDNCT06747130 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the efficacy of montelukast, a leukotriene receptor antagonist, in preventing liver enzyme elevations in adults diagnosed with dengue fever. The study aims to determine whether montelukast can reduce the incidence of transaminase elevations, which are associated with severe dengue complications. Participants will be monitored for safety and any medical issues arising from the medication. The trial includes both Phase 2 and Phase 3 evaluations to assess the drug's effectiveness and safety profile.

Who should consider this trial

Good fit: Ideal candidates for this study are adults over 18 years old who have been diagnosed with dengue and are admitted to the hospital.

Not a fit: Patients with other causes of fever, critically ill patients requiring intensive care, or those with a history of liver disease may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce liver complications in adult dengue patients, improving their overall health outcomes.

How similar studies have performed: While the approach of using montelukast in dengue patients is novel, previous studies have shown that leukotriene blockade can reduce plasma leakage in animal models, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient age \>18 years
* Dengue infection diagnosed by NS1 antigen, or polymerase chain reaction
* Admitted to the hospital
* Written informed consent from patient or attending relative able to and willing to give informed consent

Exclusion Criteria:

* Other possible cause of fever other than dengue infection
* Pregnancy
* Unable to take medication
* Aminotransferase level above 150 U/l
* Allergy to paracetamol or tramadol
* Paracetamol indicated for condition other than dengue infection
* Critically ill patient who need ICU or invasive ventilation support
* History of cirrhosis
* Unable to communicate
* Other indication of montelukast
* History of psychiatric illness

Where this trial is running

Bangkok

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.

View on ClinicalTrials.gov →

Conditions: Dengue, Montelukast, Transaminases

Last reviewed 2026-05-15 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.