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Online Brief Advice Intervention for Heavy Cannabis Users

NCT07379736 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2026-01-30

No results posted yet for this study

Summary

This project will evaluate whether a brief online intervention focused on cannabis withdrawal can increase awareness and insight about cannabis use disorder among daily cannabis users. The study will employ a randomised controlled trial design comparing an intervention consisting of a short educational video on cannabis withdrawal and personalised feedback on the Cannabis Withdrawal Scale, against a control condition of a relaxation video and mood questionnaire.

The investigators will aim to recruit at least 100 daily cannabis users (minimum 25 days of cannabis use /month and minimum 3.5g cannabis/week \[low-medium daily use\]) through Prolific, an online research participant platform. Potential participants will complete a brief screening questionnaire (1 minute) to confirm that participants meet inclusion criteria, before randomisation. The experiment will last 10-15 minutes and will include baseline demographic and substance use measures, the intervention or control condition, and outcome measures.

The primary outcome will be cannabis use awareness and insight as measured by the Substance Use Awareness and Insight Scale (SAS). Secondary outcomes will include intention to change cannabis use. This study aims to determine whether a short online intervention can increase awareness about cannabis withdrawal among heavy users. If successful, subsequent studies will be designed to assess these outcomes over the longer-term.

Conditions

  • Cannabis User

Interventions

OTHER

Educational video

Short educational video on cannabis withdrawal and personalised feedback on the Cannabis Withdrawal Scale.

OTHER

Relaxation video

Relaxation video and mood questionnaire with personalised feedback

Sponsors & Collaborators

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-10-16
Primary Completion
2026-09-30
Completion
2026-09-30

Countries

  • United Kingdom

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07379736 on ClinicalTrials.gov