PSILORIS

Educational resource only. Not medical advice. Psilocybin remains illegal or restricted in many jurisdictions.

Full safety notice
← All conditions
Negative / contraindicated

Psychotic Disorders & High Psychosis Risk

Current clinical consensus treats personal or strong family history of psychotic disorders as a major exclusion criterion for psilocybin therapy. Available evidence does not support benefit and highlights elevated risk of harm.

Last reviewed: 2026-07-24

Evidence narrative

Evidence section. Peer-reviewed findings and evidence-graded interpretation only.

Why this category is marked negative

Psilocybin can profoundly alter perception, belief stability, and self-boundaries. For people with schizophrenia-spectrum illness, bipolar disorder with psychotic features, or elevated psychosis vulnerability, those effects are more likely to destabilise than to heal.

What standards of care emphasise

  • Modern trial protocols typically exclude psychotic disorders and often first-degree relatives with such histories.
  • Safety guidelines prioritise preventing prolonged psychotic reactions and severe confusion.
  • There is no robust evidence base supporting psilocybin as a treatment for primary psychotic illness.

How to read "negative" on PSILORIS

Negative means the balance of evidence and risk currently argues against therapeutic use for this indication, not that every related research question is forever closed. Any future exception would require specialised protocols far beyond general educational guidance.

Citations

[1] review · 2008

Human hallucinogen research: guidelines for safety

Johnson MW, Richards WA, Griffiths RRJournal of Psychopharmacology

Foundational safety framework for human psychedelic research covering screening, set and setting, session monitoring, and aftercare.

DOI: 10.1177/0269881108093587

[2] review · 2018

Psychiatry & the psychedelic drugs. Past, present & future

Rucker JJH, Iliff J, Nutt DJNeuropharmacology

Reviews historical and contemporary psychiatric use of psychedelics, including safety considerations, study design challenges, and research priorities.

DOI: 10.1016/j.neuropharm.2017.12.040

Anecdotal reports

Anecdote section. Not clinical evidence. Included for context and research-question generation only.

No curated anecdotes are attached to this condition yet.