Placebo Comparator: Placebo
Placebo
CannabisLoading study record…
The purpose of this research is to assess the effects of smoked cananbis when cannabis is smoked during periods of cannabis use as usual and after a brief period of abstinence.
Locally preserved from ClinicalTrials.govOpen ClinicalTrials.govlast source update 2026-09-04
What this record can show
This locally preserved record separates the registered protocol from source-reported registry results. Neither is a treatment recommendation.
Registry facts
This outpatient study will assess the acute pharmacodynamic effects of smoked cannabis with \~50 mg and \~100 mg THC compared to placebo (\~0 mg THC) and whether a brief period of abstinence alters these effects. Metabolism (pharmacokinetics) of THC will be examined to associate behavioral and physiological effects to plasma concentrations of THC and metabolites.
Linked local records
Local links use governed condition terms or exact source-reported intervention names. They are navigation candidates, not efficacy claims.
Interventions
Placebo
CannabisSmoked low dose THC
CannabisSmoked high dose THC
CannabisEligibility
primary outcomes
Time frame: 3 hours
Subject ratings of "Good Drug Effect" as measured using a visual analog scale (1-100 mm)
Time frame: 3 hours
Pain threshold assessed using the Cold Pressor Test (percent baseline)
secondary outcomes
Time frame: 3 hours
Peak plasma levels of THC (ng/ml)
Time frame: 3 hours
Peak plasma levels of 11-OH-THC (ng/ml)
Publications
No exact PMID-linked public article is currently readable locally.