Trial ID or NCT#



recruiting iconRECRUITING


Opioid medications are commonly used for pain relief. When given over time, physical dependence can occur. This results in unpleasant side effects--such as agitation and nausea--if opioid medications are suddenly stopped. However, we do not know how withdrawal affects the brain. We know that a medication named Ondansetron can help ease or prevent symptoms associated with opioid withdrawal. Through imaging of the brain by fMRI, we hope to see how opioid withdrawal, with and without the administration of ondansetron, affects brain activity.

Official Title

fMRI Imaging of Opioid Withdrawal in Healthy Human Volunteers

Eligibility Criteria

Ages Eligible for Study: 18 Years to 35 Years
Sexes Eligible for Study: Male
Accepts Healthy Volunteers: Yes


Lawrence Chu, MD, MS
Lawrence Chu, MD, MS
Professor of Anesthesiology, Perioperative and Pain Medicine at the Stanford University Medical Center

Contact us to find out if this trial is right for you.


Anna Clemenson
(650) 887-4677