Study of Naltrexone-Induced Blockade of Antidepressant Effects
Public ClinicalTrials.gov record NCT04322526. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Naltrexone-induced Blockade of Neural Responses Induced by Fast-Acting Antidepressant Effects
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The goal of this study is to determine whether antidepressant placebo effects and contextual cues broadly, can be blocked by one single dose of the µ-opioid antagonist naltrexone. To test this hypothesis, un-medicated, patients with MDD completed a randomized, double-blind, placebo-controlled, cross-over study of 50mg of the µ-opioid antagonist naltrexone or matching placebo, immediately before a Pharmaco-fMRI scanning session.
Study identification
- NCT ID
- NCT04322526
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 25 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 55 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 30, 2017
- Primary completion
- Jul 14, 2018
- Completion
- Jul 14, 2018
- Last update posted
- Apr 20, 2020
2017 – 2018
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Bellefield Towers | Pittsburgh | Pennsylvania | 15213 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04322526, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 20, 2020 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04322526 live on ClinicalTrials.gov.