A new medication to help people with opioid use disorder

A novel and highly selective orexin 1 receptor antagonist for the treatment of patients with opioid use disorder

NIH-funded research Eolas Therapeutics, INC. · NIH-11310553

This project is developing a new medication to help people overcome opioid use disorder and prevent relapse.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionEolas Therapeutics, INC. NIH-funded
Lab location1 site (Palm Beach Gardens, United States)
Project IDNIH-11310553 on NIH RePORTER

What this research studies

Opioid use disorder is a serious health challenge, and current treatments often struggle to prevent relapse. Our team, working with partners, has developed a promising new medication called AZD4041 that targets a specific brain receptor. In laboratory animals, this medication helped reduce the desire for opioids and prevented relapse-like behaviors without causing unwanted side effects like sleepiness. We have already started testing its safety in healthy volunteers, and early results are positive. The next steps involve further safety testing in volunteers.

Who could benefit from this research

Good fit: This research is currently seeking healthy volunteers for safety testing, with future opportunities likely for individuals with opioid use disorder.

Not a fit: Patients not interested in taking a new medication or those with certain medical conditions might not benefit from this particular approach.

Why it matters

Potential benefit: If successful, this new medication could offer a more effective way to help individuals with opioid use disorder maintain abstinence and avoid relapse.

How similar studies have performed: This approach is based on a novel, selective target, and while the specific medication is new, the concept of targeting brain receptors for addiction has been explored in other contexts.

Where this research is happening

Palm Beach Gardens, 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 2026-06-13 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.