CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 165 enrolled / 165 target
Drug / intervention
NAL ER +3 moredrug
Likely dose
27 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05964335
NCT05964335Phase 2CompletedMonitor (5.7/mo)Completion was 14mo ago

A Randomized, Double-Blind, Placebo-Controlled, Parallel, 4-Arm Dose Ranging Study of the Safety and Efficacy of Nalbuphine Extended-Release Tablets (NAL ER) for the Treatment of Cough in Idiopathic Pulmonary Fibrosis (IPF)

Trevi Therapeutics·interventional·Posted Jul 27, 2023·Updated Jun 26, 2026

In Brief

A Phase 2 clinical trial evaluating NAL ER and Placebo for Idiopathic Pulmonary Fibrosis. Completed, enrolled 165 participants across 59 sites in 10 countries.

Signals

Enrolling slower than its timeline implies

Detailed Summary

The main purpose of the study is to evaluate the effect of NAL ER on 24-hour cough frequency using objective digital cough monitoring and to assess safety and tolerability of NAL ER.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustralia, Canada, Chile, Germany, Italy, Netherlands, Poland, Spain, Turkey (Türkiye), United Kingdom
Collaborators--

Timeline

Phase 2CompletedFinished
202420252026
First PostedJul 27, 2023
Enrollment StartFeb 6, 2024
Primary CompletionApr 24, 2025
TodayJul 2, 2026
Enrollment to primary: 1.2 yearsPosted 2.9 years ago

Arms & Interventions

NAL ER 27 mgexperimental

Participants were titrated over 2 weeks to NAL ER 27 mg BID, then maintained at the fixed dose for 4 weeks (total 6 weeks of treatment).

Drug: NAL ER
NAL ER 54 mgexperimental

Participants were titrated over 2 weeks to NAL ER 54 mg BID, then maintained at the fixed dose for 4 weeks (total 6 weeks of treatment).

Drug: NAL ER
NAL ER 108 mgexperimental

Participants were titrated over 2 weeks to NAL ER 108 mg BID, then maintained at the fixed dose for 4 weeks (total 6 weeks of treatment).

Drug: NAL ER
Placeboplacebo_comparator

Participants received a matching placebo BID, using the same 2-week blinded titration schedule and 4-week fixed-dose period as the active treatment arms (6 weeks total).

Drug: Placebo

Interventions

NAL ERdrug

Oral tablets

Placebodrug

Oral tablets

NAL ERdrug

Oral Tablets

NAL ERdrug

Oral tablets