Examining the effects of marijuana and opioids on each other

Modulation of Drug Intake: Evaluation of Opioid and Cannabinoid Interactions on Drug Self-Administration

Phase 1 Interventional University of Kentucky · NCT05485012

This study tests how marijuana and oxycodone affect each other when taken together in healthy volunteers to see what happens.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment12 (estimated)
Ages18 Years to 50 Years
SexAll
SponsorUniversity of Kentucky Academic / other
Locations1 site (Lexington, Kentucky)
Trial IDNCT05485012 on ClinicalTrials.gov

What this trial studies

This study investigates how marijuana influences the self-administration of oxycodone and vice versa in healthy participants. Conducted in a controlled laboratory setting, participants will be administered varying doses of both substances to observe their interactions. The study aims to provide insights into the potential modulation effects between marijuana and opioids. Participants will reside at the University of Kentucky Hospital for approximately 6.5 weeks, where meals will be provided.

Who should consider this trial

Good fit: Ideal candidates are healthy adults aged 18-50 with experience using both marijuana and opioids.

Not a fit: Patients with significant medical complications or conditions will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of the interactions between marijuana and opioids, potentially informing safer prescribing practices.

How similar studies have performed: While there is ongoing research into the interactions between marijuana and opioids, this specific approach is relatively novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Ages 18-50
* Experience with marijuana and opioids
* General good health
* Willing to live at the University of Kentucky Hospital (research unit) for approx. 6.5 weeks (meals are provided,

Exclusion Criteria:

* Significant medical complications/conditions

Where this trial is running

Lexington, Kentucky

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Marijuana UseOpioid Usemarijuanaopioidhealthy participantslaboratory study
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.