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Safety and Efficacy of Oral Cannabis in Chronic Spine Pain

RecruitingPhase 3

Who can join

Ages 21 to 84 · All sexes

Full eligibility criteria
Some inclusion/exclusion criteria are purposely omitted at this time to preserve scientific integrity. They will be included after the trial is complete.

Inclusion Criteria:

Self-reported chronic (≥3 months' duration), non-radicular spine pain

Exclusion Criteria:

Unwilling/unable to refrain from cannabis use (medical or recreational) for 14 days prior to Baseline Visit and throughout the study (other than study drug). This includes whole plant inhalation, edibles, extracts, and topicals.

Co-morbid cancer-related pain condition

Neuropathic Pain

A co-morbid pain condition that is of greater severity than the patient's spine pain

Spine or other major surgery within the 3 months prior to enrollment

Planned surgery or procedural intervention during the study period

Allergy or adverse reaction to cannabis

Current or historical substance use disorder

Current or historical alcohol use disorder

Current or prior cannabis abuse/dependence

Positive result for use of amphetamine/methamphetamine, barbiturates, benzodiazepines, cocaine, phencyclidine (PCP), ecstasy (MDMA), as detected on urine screen

Current use of valproate, clobazam, clopidogrel, warfarin, barbiturates, benzodiazepines

Prior adverse reaction to cannabis exposure (paranoia, anxiety, etc.)

History or diagnosis of schizophrenia, bipolar or a psychotic disorder

History of any mental health illness that in the opinion of the Investigator would compromise the safety of the participant

Current or historical severe depression

Current suicidal ideation

Diagnosed cognitive impairment (e.g. Alzheimer's Disease, traumatic brain injury)

Uncontrolled hypertension (\>139/89)

Abnormal values on CBC (complete blood count) or CMP (comprehensive metabolic panel) laboratory analysis that are deemed clinically significant by study physician

Known hepatic disease or dysfunction, or identification of such on screening laboratory studies

Known cardiovascular disease

Abnormal result on electrocardiogram (ECG) that is deemed clinically significant by study MD

Cognitive disability that interferes with ability to provide consent or understand study procedure

History of seizure disorder

Any medical condition for which immunosuppressive therapy is required.

Inability to refrain from using tobacco for at least 4 hours

Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the participant or the quality of the data

Pending legal action or workers compensation

Pregnant females or females intending to become pregnant during the study period

Unwilling to use one of the accepted forms of contraception during the study period and for at least 60 days after completion of the study (females of childbearing potential and males with sexual partners of childbearing potential)

Lactating females

Analgesia Arm Exclusion Criteria:

Unwilling/unable to discontinue current opioid use for 14 days prior to Baseline study visit and throughout the study

Reduction Arm Exclusion Criteria:

Not interested in reducing or discontinuing use of prescribed opioids for chronic pain

Unwilling to allow the study team to communicate with the participant's opioid prescribing provider

\*Some inclusion/exclusion criteria are purposely omitted at this time to preserve scientific integrity. They will be included after the trial is complete.

About the study

The overall objectives of this study are to investigate the efficacy of extended cannabis treatment to reduce patient exposure to prescription opioids through its use 1) as a non-opioid analgesic treatment, and 2) as a therapy for reducing high-dose opioid use in patients with chronic spine pain.

What is being tested

Sponsor: University of Colorado, Denver · Participants: 157 · Started: 2026-01

Contact the study team

Official record on ClinicalTrials.gov — NCT05052541

Locations in the U.S.

ColoradoUniversity of Colorado Anschutz Medical Campus, Aurora

Conditions

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.