CBD shows promise in preventing psychosis onset

NCT ID NCT07434973

First seen Feb 28, 2026 · Last updated May 15, 2026 · Updated 8 times

Summary

This study tests whether cannabidiol (CBD), a non-psychoactive cannabis compound, can reduce psychotic symptoms in 586 people aged 12-35 who are at high risk for psychosis. Participants take either CBD or a placebo daily for 2 years. The goal is to see if CBD eases symptoms and delays or prevents the first psychotic episode.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Email: •••••@•••••

Locations

  • Biobizkaia Health Research Institute (Asociación Instituto de Investigación Sanitaria)

    Bilbao, Spain

    Contact Email: •••••@•••••

    Contact

  • Cambridgeshire and Peterborough NHS Foundation Trust

    Cambridge, United Kingdom

    Contact Email: •••••@•••••

  • Douglas Hospital Research Centre

    Montreal, Canada

    Contact Email: •••••@•••••

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  • Foundation for Biomedical Research of the Gregorio Marañón Hospital (FIBHGM)

    Madrid, Spain

    Contact Email: •••••@•••••

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  • IRCCS Santa Lucia Foundation

    Roma, Italy

    Contact Email: •••••@•••••

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  • Institute of Psychiatry, Psychology & Neuroscience, King's College London

    London, United Kingdom

    Contact Email: •••••@•••••

    Contact

  • Ludwig Maximilian University Hospital

    München, Germany

    Contact Email: •••••@•••••

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  • MedUni Vienna, Department of Child and Adolescent Psychiatry

    Vienna, Austria

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  • National and Kapodistrian University of Athens

    Athens, Greece

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  • Oxford Health NHS Foundation Trust (OHFT)

    Oxford, United Kingdom

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  • Psychiatric University Hospital (PUK)

    Zurich, Switzerland

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  • Stichting Amsterdam UMC

    Amsterdam, Netherlands

    Contact Email: •••••@•••••

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  • University Hospital Turku

    Turku, Finland

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  • University Medical Center Schleswig-Holstein

    Lübeck, Germany

    Contact Email: •••••@•••••

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  • University of Bari Aldo Moro

    Bari, Italy

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  • University of Campania L. Vanvitelli

    Naples, Italy

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  • University of Cologne, Faculty of Medicine and University Hospital of Cologne

    Cologne, Germany

    Contact Email: •••••@•••••

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  • University of Pavia

    Pavia, Italy

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  • Vivantes Network for Health GmbH

    Berlin, Germany

    Contact Email: •••••@•••••

    Contact

Conditions

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