Cited by 261Cannabis and Cannabinoid ResearchSchizophrenia research and treatmentPsychedelics and Drug Studies

A systematic review of the antipsychotic properties of cannabidiol in humans

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Iseger, Tabitha A., Bossong, Matthijs G.·2015·Schizophrenia Research

Abstract

Despite extensive study over the past decades, available treatments for schizophrenia are only modestly effective and cause serious metabolic and neurological side effects. Therefore, there is an urgent need for novel therapeutic targets for the treatment of schizophrenia. A highly promising new pharmacological target in the context of schizophrenia is the endocannabinoid system. Modulation of this system by the main psychoactive component in cannabis, Δ9-tetrahydrocannabinol (THC), induces acute psychotic effects and cognitive impairment. However, the non-psychotropic, plant-derived cannabinoid agent cannabidiol (CBD) may have antipsychotic properties, and thus may be a promising new agent in the treatment of schizophrenia. Here we review studies that investigated the antipsychotic properties of CBD in human subjects. Results show the ability of CBD to counteract psychotic symptoms and cognitive impairment associated with cannabis use as well as with acute THC administration. In addition, CBD may lower the risk for developing psychosis that is related to cannabis use. These effects are possibly mediated by opposite effects of CBD and THC on brain activity patterns in key regions implicated in the pathophysiology of schizophrenia, such as the striatum, hippocampus and prefrontal cortex. The first small-scale clinical studies with CBD treatment of patients with psychotic symptoms further confirm the potential of CBD as an effective, safe and well-tolerated antipsychotic compound, although large randomised clinical trials will be needed before this novel therapy can be introduced into clinical practice.

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Crossref · 10.1016/j.schres.2015.01.033

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  • The protective role that CBD could play to alleviate the negative effects of THC is now well established and documented.

    “The protective role that CBD could play to alleviate these negative effects is now well established and documented (Iseger and Bossong, 2015).”

    From Cannabis sativa: The Plant of the Thousand and One Molecules (2016) · cites this paper as Iseger and Bossong, 2015

  • A number of studies indicate that cannabis strains containing higher THC:CBD ratios may result in greater risk of psychotic outcomes, and that CBD might have anti-psychotic properties.

    “A number of studies indicate that cannabis strains containing higher THC:CBD ratios may result in greater risk of psychotic outcomes, and that CBD might have anti-psychotic properties (27)(28)(29)47).”

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Authors
Iseger, T. A., & Bossong, M. G.
Affiliations
King's College London (GB)
Corresponding author
Bossong, Matthijs G.
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2015-03
Volume
162
Issue
1-3
Pages
153-161
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2135363891
Cited by
261
References
81
Citations by year
2026: 3 · 2025: 18 · 2024: 16 · 2023: 15 · 2022: 19 · 2021: 30 · 2020: 32 · 2019: 27 · 2018: 36 · 2017: 29 · 2016: 22 · 2015: 13
FWCI
4.18
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
  • Research Portal (King's College London) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Psychology › Clinical Psychology › Psychedelics and Drug Studies
Keywords
cannabidiol
MeSH terms
Brain, Cannabidiol, Humans, Psychotic Disorders, Antipsychotic Agents

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