Clinical Trial: Effects of Cannabidiol on Marijuana-seeking in Humans

Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational

Official Title: Effects of Cannabidiol on Marijuana-seeking in Humans

Brief Summary:

The purpose of the proposed study is to investigate the effectiveness of cannabidiol for reducing marijuana seeking in non-treatment seeking volunteers. Cannabidiol is a cannabinoid (similar to cannabis, or marijuana) present in marijuana that alters some of the effects of marijuana.

Assess the ability of acute smoked CBD pretreatment to reduce marijuana-seeking behavior and increase price-elasticity of marijuana demand.


Detailed Summary:

Participants will be asked to participate in a total of three choice sessions over two weeks with each session day separated by at least two days. Each session day will last approximately 8 hours.

During each study session participants will be asked to smoke a cigarette. Participants will be asked to smoke from a marijuana cigarette. These cigarettes may contain cannabidiol or they may not (placebo).

Participants will be asked to answer questions about how the drugs make them feel. Vitals signs (blood pressure, heart rate, and oxygen saturation) will be measured using a non-invasive (external) vitals monitor.

Six samples will be taken in each of the three sessions. Blood samples will be obtained via butterfly catheter placed in a vein.

Participants will be asked to remain in the laboratory until all marijuana-related subjective and physiological effects have returned to the original levels recorded this morning before they smoked the first marijuana cigarette.


Sponsor: Wayne State University

Current Primary Outcome:

  • Marijuana Craving Visual Analog Scale (VAS) (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Craving VAS administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
  • Marijuana Craving Questionnaire (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Craving Quest. administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
  • Marijuana Rating Form (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Rating Form administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
  • Subjective Effects Scale Visual Analog Scale (VAS) (Self-report measure) [ Time Frame: Change is being assessed. Subjective Effects Scale administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
  • State-Trait Anxiety Inventory (Self-report measure) [ Time Frame: Change is being assessed. State-Trait Anxiety administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
  • Systolic blood pressure (phy

    Original Primary Outcome:

    • Marijuana Craving Visual Analog Scale (VAS) (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Craving VAS administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
    • Marijuana Craving Questionnaire (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Craving Quest. administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
    • Marijuana Rating Form (Self-report measure) [ Time Frame: Change is being assessed. Marijuana Rating Form administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
    • Subjective Effects Scale Visual Analog Scale (VAS) (Self-report measure) [ Time Frame: Change is being assessed. Subjective Effects Scale administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
    • State-Trait Anxiety Inventory (Self-report measure) [ Time Frame: Change is being assessed. State-Trait Anxiety administered at baseline 0900. Administered at 0945 and every 15 minutes until 1045, then every 30 minutes until 1245. At 1330 administered every 15 minutes until 1430, then every 30 minutes until 1630. ]
    • Systolic blood pressure (phy

      Current Secondary Outcome:

      Original Secondary Outcome:

      Information By: Wayne State University

      Dates:
      Date Received: February 11, 2016
      Date Started: January 2016
      Date Completion: December 2017
      Last Updated: April 20, 2017
      Last Verified: April 2017