CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 361 enrolled
Drug / intervention
Cannabis (smoked flower, ingested edible)drug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03491384
NCT03491384N/ACompleted

Novel Approaches to Understanding the Role of Cannabinoids and Inflammation in Anxiety

University of Colorado, Boulder·observational·Posted Apr 9, 2018·Updated Aug 27, 2025

In Brief

An observational study evaluating Cannabis (smoked flower, ingested edible) for Anxiety and 5 related conditions. Completed, enrolled 361 participants across 1 site.

Detailed Summary

This study investigates whether the anxiolytic effects and anti-inflammatory properties of cannabis vary as a function of the ratio of CBD to THC, with the goal that these effects may shed light on the mixed data linking cannabis use and anxiety. Individuals with mild to moderate anxiety who elect to use cannabis (smoked flower or edible) will complete four weeks of observation. Participants complete cognitive tasks, a substance use history, health questionnaires concerning sleep and physical activity, and a blood draw at four different time points (Baseline, after 2 weeks of cannabis use, and immediately before and after self-administration after 4 weeks of use) with the use of a mobile pharmacology laboratory, which goes to a convenient location for each participant to self-administer their cannabis. Participants are then followed for five months to self-report on cannabis use, anxiety, subjective cognitive functioning, sleep quality, and other mental health symptoms.

Study Details

Study Typeobservational
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

N/ACompletedFinished
20192020202120222023202420252026
First PostedApr 9, 2018
Enrollment StartApr 1, 2018
Primary CompletionDec 30, 2022
Study CompletionMay 17, 2023
TodayJul 2, 2026
Enrollment to primary: 4.7 yearsPosted 8.2 years ago

Interventions

Cannabis (smoked flower, ingested edible)drug

Self-Directed Use (ad-libitum)