Brain zaps to fight weed addiction in schizophrenia?

NCT ID NCT04871048

Recruiting now Disease control Sponsor: Centre Hospitalier Universitaire de Saint Etienne Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a non-invasive brain stimulation technique called tDCS can reduce cannabis use in people with schizophrenia. 110 motivated participants will receive either real or sham stimulation over 5 days. Researchers will track changes in cannabis consumption, cravings, and overall functioning over 6 months.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: transcranial direct current stimulation (tDCS) – a non-invasive brain stimulation device
What this could lead to: If it works, this could offer a new, drug-free way to help people with schizophrenia cut down or stop cannabis use, improving their overall health.
What could go wrong: This is an early exploratory study with only 110 people. The effects may be small or temporary, and not everyone may benefit. Brain stimulation can cause mild discomfort or headache.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

cannabis dependence schizophrenia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CANNABIS-INDUCED DISORDER SCHIZOPHRENIA

Contacts and locations

Locations

CH Le Vinatier Service universitaire d'addictologie de Lyon
NOT_YET_RECRUITING

Bron, 69678, France
CH Saint-Cyr-au-Mont-d'Or service de psychiatrie
NOT_YET_RECRUITING

Saint-Cyr-au-Mont-d'Or, 69450, France
CHU Pôle de Psychiatrie Neurologie et Rééducation
NOT_YET_RECRUITING

La Tronche, 38700, France
CHU de Clermont-Ferrand Service de Psychiatrie
NOT_YET_RECRUITING

Clermont-Ferrand, 63000, France
CHU de Saint-Etienne
RECRUITING

Saint-Priest-en-Jarez, France
Centre Hospitalier Alpes Isère
NOT_YET_RECRUITING

Saint-Égrève, 38120, France
Centre Hospitalier Universitaire Service d'Addictologie et Pathologies Duelles
NOT_YET_RECRUITING

Clermont-Ferrand, 63000, France
Service Hospitalo-Universitaire d'Addictologie CHU de Dijon
NOT_YET_RECRUITING

Dijon, 21079, France

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