Expired Study
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Stanford, California 94305


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. We are interested in knowing if a medication named Ondansetron can help ease or prevent symptoms associated with opioid withdrawal. We are also interested in knowing if a similar (but more potent FDA-approved drug, palonosetron) can more effectively treat withdrawal symptoms with or without combination with an antihistamine called hydroxyzine (vistaril).

Study summary:

We hope to learn if Ondansetron, Palonosetron, and/or combination with hydroxyzine can be used to prevent or attenuate the signs and symptoms of opioid withdrawal. If we find that it can help prevent these symptoms, it may become a new treatment that can aid patients suffering from these symptoms.


Inclusion Criteria: - healthy men - ages 18-35 Exclusion Criteria: - history of substance abuse - Raynaud's disease or coronary artery disease



Primary Contact:

Principal Investigator
Dr Larry Fu-nien Chu
Stanford University

Backup Contact:


Location Contact:

Stanford, California 94305
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: October 09, 2019

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