Understanding how fentanyl causes breathing problems

Dissecting the mechanisms underlying fentanyl-induced cardiorespiratory depression

NIH-funded research Washington University · NIH-11167323

This study is looking at how fentanyl can slow down breathing and cause overdose, and it’s exploring a new way to help reverse these effects safely, which could make it easier to treat people who have taken too much fentanyl without causing them to feel sick.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionWashington University NIH-funded
Lab location1 site (Saint Louis, United States)
Project IDNIH-11167323 on NIH RePORTER

What this research studies

This research investigates the mechanisms by which fentanyl leads to respiratory depression, a serious condition that can result in overdose deaths. The study focuses on the role of mu opioid receptors located outside the brain, which may contribute to this dangerous effect. By exploring the use of a specific type of opioid antagonist that targets these peripheral receptors, the research aims to find a way to reverse the effects of fentanyl without causing withdrawal symptoms. This could potentially improve the safety and effectiveness of overdose interventions.

Who could benefit from this research

Good fit: Ideal candidates for this research include individuals at risk of opioid overdose, particularly those using fentanyl or similar synthetic opioids.

Not a fit: Patients who are not using opioids or who do not have a history of opioid overdose may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to new treatments for opioid overdoses that do not induce withdrawal symptoms.

How similar studies have performed: Previous research has shown promise in using peripheral opioid antagonists for managing opioid-induced side effects, suggesting that this approach may be viable.

Where this research is happening

Saint Louis, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-09 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.