Testing CBD and THC for older adults using cannabis
Official title: Rocky Mountain Cannabis Research Center - Cannabidiol and Older Adult Cannabis Users: A Randomized, Placebo-Controlled Study
Run by University of Colorado, Boulder · NCT06290063 · Data updated 2026-11-12
This study is testing if a mix of CBD and THC, just CBD, or a placebo can help older adults manage pain, anxiety, and depression while using cannabis.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 60 Years and up |
| Sex | All |
| Enrollment | 385 (estimated) |
| Sponsor | University of Colorado, Boulder Academic / other |
| Drugs / interventions | pexidartinib, chemotherapy |
| Locations | 1 site (Boulder, Colorado) |
| Status | Recruiting |
| Started | May 1, 2024 |
| Main results expected | August 31, 2028 |
| Study ends | August 31, 2028 |
| Registry record updated | June 10, 2026 |
| Trial ID | NCT06290063 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 60 and older who have previously used cannabis without negative effects and are currently taking medications for pain, sleep, or mood.
✕Probably not a fit
Patients with a history of psychosis or those currently using certain medications that interact with cannabis products may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This project aims to evaluate the effects of hemp-derived CBD and THC on older adults who use cannabis for managing pain, anxiety, and depression. Participants aged 60 and above will be randomly assigned to receive either a combination of CBD and THC, CBD without THC, or a placebo over an 8-week period. The study seeks to gather data on the safety and efficacy of these cannabis formulations, which could inform personal choices and regulatory policies regarding cannabis use among older adults.
Why it matters
Potential benefit: If successful, this study could provide valuable insights into safe cannabis use for older adults, potentially improving their quality of life.
How similar studies have gone: While there is limited data on older adult cannabis use, similar studies exploring CBD and THC effects have shown promise, indicating potential for success in this novel approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * At least 60 years of age * Able to provide informed consent * Must have used a cannabis product at least once with no negative effects * Must not have been regularly using any cannabis products (\<3x/month) in the last 6 months * Female participants must be postmenopausal * Liver function tests (Alanine transaminase (ALT) and * Aspartate transaminase (AST)) must show levels no greater than 2x the upper normal limits for age * Must be currently taking medication/s for pain, sleep, and/or mood Exclusion Criteria: * Blood alcohol level \> 0 at screening (to sign consent form) * Report of other drug use (cocaine, opiates, methamphetamine) in the past 90 days or fail urine screen for any of these drugs * Past or current diagnosis, or family history of diagnosis of psychosis * Current use of anti-epileptic medications (e.g. clobazam, sodium valproate) * Current use of medications known to have major interactions with Epidiolex (buprenorphine, leflunomide, levomethadyl acetate, lomitapide, mipomersen, pexidartinib, propoxyphene, sodium oxybate, and/or teriflunomide). * Current use of antipsychotic medications * Currently undergoing chemotherapy (to prevent drug interactions)
Where it's running
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University of Colorado at Boulder
Boulder, Colorado, United States Recruiting
Study contacts
- Study coordinator: Kyle A Chrystal, BA
- Email: kyle.chrystal@colorado.edu
- Phone: 6037697718
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.