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CompletedNCT04044729Updated Apr 13, 2025

Mechanisms of CBD for Chronic Pain

An Early Phase 1 interventional study of Cannabidiol and Placebo in Chronic Pain, sponsored by University of Utah. Completed at 1 site in United States. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2025-04-13.

Sponsored by University of Utah · Early Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Dec 2024, 1 year 10 months ago, and no results have been posted to the registry.
Phase
Early Phase 1
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
All
01

Study summary

This is a study designed to examine the neurochemical mechanisms associated with Cannabidiol (CBD) versus placebo for chronic non-cancer pain.

Read the detailed description

The aim of this trial is to examine the neurochemical mechanisms associated with Cannabidiol (CBD) versus placebo for chronic non-cancer pain. Participants will include individuals with chronic pain, who will be randomized into one of two intervention conditions: low THC/high CBD or placebo. In addition to receiving CBD or placebo, participants also will complete symptom assessments of chronic pain data (intensity, quality, interference/disability) throughout the study. These measures will be gathered prior to and following the fifth doses (dosing will occur once per day for five days) of CBD or placebo. A secondary objective will be to examine the association between clinical and inflammatory markers.

02

Conditions studied

  • Chronic Pain

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03

In context

Chronic Pain

2,930 studies on the registry are indexed under Chronic Pain; 701 are open to participants now.

This study's enrollment of 24 is below the median of 60 across 2,161 interventional studies indexed under Chronic Pain.

Browse Chronic Pain studies →

Lead sponsor

University of Utah is the lead sponsor of 969 studies on the registry; 178 are open to participants now.

Of its 107 completed or terminated interventional studies of FDA-regulated products, 62 (58%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age between 18-50 yrs.
  • Chronic musculoskeletal and joint pain for at least 3 months or longer.
  • Participants must live within a 60 mile radius of Salt Lake City, Utah to be eligible.

Exclusion criteria

Exclusion Criteria:

  • Current or past neurological illness.
  • Substance abuse or dependence within the prior 90 days.
  • Contraindication to brain MRI.
  • Type I and type II diabetes.
  • Unstable medical conditions.
  • Consumption of more than 2 drinks of alcohol per night.
  • Current pregnancy or planning to become pregnant or breastfeeding.
  • History of seizures or head trauma at PI discretion.
  • Active or history of major mental illness
  • Use of opioid medications in the past 30 days.
  • LFT results 3 times greater than the upper limit of normal at the screening.
  • Participants may be excluded if the PI feels they do not meet safety criteria.
05

Study design

Phase
Early Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
24 participants (actual)

Study arms

  • Active comparator
    Cannabidiol

    Drug: Cannabidiol An oral dose of Cannabidiol (CBD) will be given once a day for five day with pain ratings taken before and after each dose every day. Other Names: CBD

    Drug: Cannabidiol

  • Placebo comparator
    Placebo

    Drug: Placebos An oral placebo will be given once a day for five day with pain ratings taken before and after each dose every day. Other Names: placebo

    Drug: Placebo

Interventions

  • DrugCannabidiol

    500mg dose, suspended in medical grade olive oil and then mixed into chocolate pudding

  • DrugPlacebo

    Placebo

06

What researchers measure

Primary outcomes

  1. Neurochemical Brain Changes

    Participants will undergo MRS scanning to assess neurochemical shifts from the baseline visit (day 1) to the visit five (day 5) in order to determine whether CBD, or Placebo will result in changes to neurochemical ratios in select brain regions. Neurotransmitter levels such as BABA and N-Acetylaspartate will be collected and compared pre and post study drug administration.

    Time frame: 5 Days

Secondary outcomes

  1. Pain Improvement

    Using baseline assessment measures gathered at visit 0 (Screening), assessments collected at visits 1-5 and follow-up will be used to determine whether the administration of CBD or placebo will improve pain relief in individuals with chronic pain. We will measure pain intensity with a visual analog scale from (0-10) with 10 being the worst pain imaginable. We will also measure Objective pain thresholds with a pressure algometer. This is a device that applies pressure to the participants finger until they say stop. The pressure range is 0-50 foot pounds of force.

    Time frame: 7 Days

07

Study locations

1 site
  • University Of Utah
    Salt Lake City, Utah 84108, United States
08

References and documents

Individual participant data

Plan to share: Undecided — The investigators are still deciding on if and what IPD will be shared and the details involved. The investigators will update when a plan is in place.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 13, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04044729
Lead sponsor
University of Utah
Responsible party
Deborah Yurgelun-Todd (Professor, University of Utah) — Principal investigator
First posted
Aug 5, 2019
Start date
Mar 16, 2020
Primary completion
Dec 1, 2024
Completion
Dec 1, 2024
Last update
Apr 13, 2025

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2025. You cannot join it, but the record below documents what was studied.

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