How gut bacteria affect opioid pain relief and tolerance

Probiotic neuroimmune modulation of morphine tolerance

NIH-funded research University of New Hampshire · NIH-10796314

This study is looking at how changes in the bacteria in your gut might affect how well opioid pain medications work for you, helping to find out who might be more likely to develop problems with opioid use before they start treatment.

Quick facts

Grant typeR15 grant
Study typeNIH-funded research
Funding institutionUniversity of New Hampshire NIH-funded
Lab location1 site (Durham, United States)
Project IDNIH-10796314 on NIH RePORTER

What this research studies

This research investigates the relationship between gut microbiome alterations and the development of opioid tolerance in adults using opioid medications for pain relief. By examining how changes in gut bacteria may influence the effectiveness of opioids, the study aims to identify patients who are at higher risk for developing opioid use disorder before they start treatment. The approach includes analyzing the gut microbiome of participants and monitoring their response to opioid analgesics over time. This could lead to personalized treatment strategies that consider an individual's gut health.

Who could benefit from this research

Good fit: Ideal candidates for this research are adults over 21 years old who are prescribed opioids for pain management.

Not a fit: Patients who are not using opioids for pain relief or those with existing opioid use disorder may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could help identify patients at risk for opioid use disorder and improve pain management strategies, potentially reducing the incidence of opioid addiction.

How similar studies have performed: Other research has shown promising results in understanding the gut-brain axis and its impact on various health conditions, suggesting that this approach could yield valuable insights.

Where this research is happening

Durham, 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.