The Impact of Vaporized Cannabis Administration and Co-Administration of Alcohol on Impairment
Johns Hopkins University
Summary
This human laboratory study will use cognitive, behavioral, and subjective measures to characterize impairment associated with co-use of alcohol and vaporized cannabis. Participants (n=32) will complete 7 double-blind, double-dummy outpatient sessions in randomized order. In each session, participants will self-administer placebo (0 mg THC) or active vaporized cannabis (5 or 25 mg THC, via a handheld vaporizer called the Mighty Medic) and a placebo drink (BAC 0.0%) or alcohol drink calculated to produce a breath alcohol concentration (BAC) of 0.05%. Participants will also complete a positive control session in which the participant administers placebo cannabis and alcohol at a target BAC of 0.08% (the legal threshold for driving impairment in most U.S. states).
Description
This study will be conducted at the Johns Hopkins Behavioral Pharmacology Research Unit (BPRU). Participants will complete a screening visit, and, if eligible, will then complete 7 experimental drug administration sessions in randomized order where the participant will vaporize cannabis-containing capsules (or "pods") (containing 0, 5, or 25mg THC) with a drink that contains no alcohol or alcohol (alcohol-containing drinks will be calculated to produce a breath alcohol concentration, BAC, of 0.05%). There is also a positive control session where participants will vaporize placebo cannabis with…
Eligibility
- Age range
- 21+ years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: 1. Have provided written informed consent 2. Be at least 21 years of age 3. Be in good general health based on a physical examination, medical history, vital signs, and screening urine and blood tests 4. Not be pregnant or nursing (if female). All females must have a negative serum pregnancy test at the screening visit and a negative urine pregnancy test at each study visit 5. Have not donated blood in the prior 30 days 6. Report at least 1 day of binge drinking in the past 3 months (greater than 4 or 5 drinks on a single occasion for women and men, respectively) 7. Report…
Interventions
- DrugCannabis
Cannabis will be vaporized using the Mighty Medic
- DrugAlcohol
Alcohol will be orally ingested via a flavored drink
- DrugPlacebo Cannabis
Placebo cannabis (i.e., water vapor) will be vaporized using the Mighty Medic.
- DrugPlacebo Alcohol
A non-alcoholic, placebo, flavored drink will be orally ingested.
Location
- Johns Hopkins Behavioral Pharmacology Research UnitBaltimore, Maryland