Long-term treatment for opioid use disorder using nalmefene implants

Nalmefene Implant for the Long-Term Treatment of Opioid Use Disorder

NIH-funded research Reacx Pharmaceuticals, INC. · NIH-11221105

This study is looking at how a small implant that releases nalmefene can help people with opioid use disorder stay on track and avoid relapse for six months or more, making it easier for them to manage their recovery.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionReacx Pharmaceuticals, INC. NIH-funded
Lab location1 site (South San Francisco, United States)
Project IDNIH-11221105 on NIH RePORTER

What this research studies

This research investigates the use of nalmefene implants as a long-term treatment option for individuals with opioid use disorder (OUD). The approach involves a single office-based procedure to insert a subdermal implant that releases nalmefene, an opioid antagonist, continuously for six months or longer. This method aims to improve patient compliance by providing a steady therapeutic level of the medication, thereby reducing the risk of relapse and overdose. The study addresses the critical need for effective long-term management of OUD, especially for those who have undergone detoxification.

Who could benefit from this research

Good fit: Ideal candidates for this research are individuals diagnosed with opioid use disorder who have recently completed detoxification.

Not a fit: Patients who are currently using opioids or have not undergone detoxification may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could significantly reduce the rates of relapse and overdose deaths among patients with opioid use disorder.

How similar studies have performed: Previous research has shown promise in using long-acting opioid antagonists for managing opioid use disorder, indicating that this approach could be effective.

Where this research is happening

South San Francisco, 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 2026-06-15 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.