CI

At a glance

ClinicalIndex Comparison Record
Phase 1Completed· 84 enrolled
Drug / intervention
Nalmefene hydrochloride +1 moredrug
Likely dose
Nalmefene hydrochloride 3mgfrom 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/NCT04828005
NCT04828005Phase 1Completed

A Two-part Open Label Study of the Pharmacodynamic Effects of Intranasal Nalmefene Compared to Intranasal Naloxone in Healthy Volunteers Under Steady State Opioid Agonism

Opiant Pharmaceuticals Inc·interventional·Posted Apr 1, 2021·Updated Jul 14, 2025

In Brief

A Phase 1 clinical trial evaluating Nalmefene hydrochloride and Naloxone hydrochloride for Pharmacodynamic. Completed, enrolled 84 participants across 1 site.

Detailed Summary

This study is to determine the pharmacodynamics (the effects of the drug and mechanisms of their action within the body) of Nalmefene when given intranasally (IN; into the nose) compared to intranasal naloxone when given to healthy volunteers under steady state opioid agonism.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsPharmacodynamic
CountriesUnited States
Collaborators--

Timeline

Phase 1CompletedFinished
20222023202420252026
First PostedApr 1, 2021
Enrollment StartMar 30, 2021
Primary CompletionMar 14, 2022
TodayJul 2, 2026
Enrollment to primary: 11 monthsPosted 5.3 years ago

Interventions

Nalmefene hydrochloridedrug

3mg Nasal spray

Naloxone hydrochloridedrug

4mg Nasal Spray