SBS-226: a new medication that activates one opioid receptor and blocks another to treat opioid addiction

Development of SBS-226, a MOR agonist / DOR antagonist, for OUD

NIH-funded research Sparian Biosciences, INC. · NIH-11196074

This project develops SBS-226, a potential medicine designed to reduce opioid cravings and withdrawal by activating the mu-opioid receptor while blocking the delta-opioid receptor for people with opioid use disorder.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionSparian Biosciences, INC. NIH-funded
Lab location1 site (New York City, United States)
Project IDNIH-11196074 on NIH RePORTER

What this research studies

Researchers are developing a drug inspired by kratom-related compounds that targets opioid receptors in a specific way that may lower addiction-related effects and side effects. The team will optimize the compound in the lab, run cell and animal safety and efficacy tests, and complete studies needed to support early human testing. If preclinical results are favorable, they plan to pursue clinical trials to see how the drug works in people with opioid use disorder. This work is early-stage at a small biotech in New York City, so it will not provide immediate patient access.

Who could benefit from this research

Good fit: Adults with opioid use disorder, especially those who do not respond to or cannot access existing treatments like methadone or buprenorphine, would be the likely candidates.

Not a fit: People without opioid use disorder or those who are stable and well-controlled on current treatments are unlikely to receive direct benefit from this project.

Why it matters

Potential benefit: If successful, it could provide a new treatment option that reduces cravings and withdrawal with potentially fewer side effects than current medicines.

How similar studies have performed: Approved treatments like methadone and buprenorphine help many people with OUD, but the specific approach of combining mu-opioid agonism with delta-opioid antagonism is novel and has limited clinical evidence so far.

Where this research is happening

New York City, 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.