Trial
NCT01681264
Effect of Guanfacine on Opioid-induced Hyperalgesia (OIH) and Tolerance
Phase IVTERMINATEDOPERATIONALConfidence: HIGH
Sponsor
Massachusetts General Hospital
Collaborators
National Institutes of Health (NIH); National Institute on Drug Abuse (NIDA)
Condition
Chronic Pain
Intervention
Morphine
Why stopped
End of NIH funding
Provenance
Dataset: 2026-07-02 • Source: ClinicalTrials.gov API v2 • Last update: 2026-04-24