CBD shows promise in cutting opioid use and pain
NCT ID NCT05299944
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether CBD (a compound from cannabis) can help people who want to reduce their pain and opioid use. 126 adults took either CBD or a placebo for 12 weeks. Researchers measured changes in pain, opioid use, and other factors like anxiety and sleep.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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126 people
The number who actually took part.
- Started
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Mar 2022
- Finished
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Aug 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Self-reported desire or intent to use cannabidiol to reduce pain and/or opioid use 2. Must be 18 years of age or older. Exclusion Criteria: 1. Self-reported recreational drug use (other than opioids) in the past 30 days or failed urine screen for cocaine, benzodiazepines (if not prescribed), MDMA, sedatives, or methamphetamine; 2. Self-reported current moderate/severe alcohol use, or severe opioid use disorder on the DSM V (unless patient is medically stable and approved by personal physician as well as the Medical Director for the study); 3. Actively seeking or in treatment for or history of any substance use disorder, other than opioid use disorder; 4. Currently being treated for or diagnosed with a moderate, severe, or unstable medical illness (e.g., renal disease, liver disease, cardiovascular disease). If the person has had a recent operation, they must be cleared for study participation by their surgeon or primary care doctor. Study inclusion/exclusion will be evaluated by our medical director when there are questions about applying criteria; 5. Currently taking any of the following medications: 1. Those known to have a major interaction with Epidiolex (buprenorphine, leflunomide, levomethadyl acetate, lomitapide, mipomersen, pexidartinib, propoxyphene, sodium oxybate, and/or teriflunomide) 2. Acute treatment with any antiepileptic medications (e.g. clobazam, sodium valproate) 6. Report being treated for bipolar disorder, schizophrenia, dissociative disorders, eating disorders, or any other psychotic or organic mental disorder in the last year. 7. Females of childbearing potential who are pregnant, nursing, or who are not using a reliable form of birth control. 8. Endorsing item 2 on the C-SSRS measure of suicide risk. 9. Currently using CBD for medical reasons.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of Colorado - Anschutz Medical Campus
Aurora, Colorado, 80045, United States
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University of Colorado Denver
Aurora, Colorado, 80045, United States
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Other studies related to the condition(s) this trial covers.
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