Open research · Psilocybin & psilocin

Countries and organisations

Explore psilocybin trials by country, sponsor and research facility. Compare registry status, study-start trends, conditions and mapped research sites.

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Explore registry geography and organisations

Trial, condition or NCT IDCountrySponsorPhaseStatusConditionReset

5 trials match this view; 5 mapped facilities. Latest indexed registry check Oct 9, 2026 01:24 UTC. Country membership uses reported locations, including locations without coordinates; Mapped-facility counts cover all sites of matching trials, including international sites, and require valid coordinates.

Enrollment sum: 223 across 5 records with a reported count. Planned and actual counts are mixed; this is not a count of unique treated participants.

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Recorded study-start years

201911

202122

202211

202411

Current indexed registry status

Completed33

Active, not recruiting11

Unknown status11

Reported research conditions

Treatment Resistant Depression11

Functional Neurological Disorder11

Depression - Major Depressive Disorder11

Autism Spectrum Disorder11

Parkinson Disease Psychosis11

Counts describe indexed registry records, not efficacy or total research activity. A trial can count under several conditions or countries. Unknown dates are excluded from the start-year chart; future years reflect planned starts. Stopped studies may reflect recruitment, funding or strategy and are not automatically treatment failures.

Matching trial records

5 matching registry records. Dates are registry milestones, not promised results announcements.
Trial	Sponsor and phase	Status	Enrollment	Start / primary completion / completion
A Randomised, Placebo Controlled Trial of Psilocybin in Treatment Resistant Depression: A Feasibility Study NCT04959253 Treatment Resistant Depression	King's College London PHASE2	Completed Registry updated 2026-08-28	60 ACTUAL	2021-06-21 2024-12-18 2024-12-18
Probing the Functional Magnetic Resonance Imaging Response to Psilocybin in Functional Neurological Disorder (PsiFUND) NCT05723276 Functional Neurological Disorder	King's College London NA	Completed Registry updated 2026-07-23	20 ACTUAL	2024-02-14 2026-04-14 2026-07-07
Measurement of Serum Cytokine Levels in Samples Collected as Part of a Clinical Trial of Psilocybin for Treatment-resistant Depression. NCT07164755 Depression - Major Depressive Disorder	King's College London Phase not reported	Active, not recruiting Registry updated 2025-09-10	46 ACTUAL	2021-06-21 2026-09 2026-09
Modulation of Serotonin Pathways Using Psilocybin in Adults With and Without Autism Spectrum Disorder (ASD) NCT05651126 Autism Spectrum Disorder	King's College London NA	Completed Registry updated 2025-07-28	67 ACTUAL	2022-12-12 2024-08-23 2024-08-23
A Randomised, Balanced, Double-blind Two-way Crossover Design Study to Evaluate the Effects of SRC Kinase Inhibitor, Saracatinib, on Brain Activity Associated With Visual Processing in Patients With Parkinson's Disease Psychosis. NCT03661125 Parkinson Disease Psychosis	King's College London EARLY_PHASE1	Unknown status Registry updated 2019-08-13	30 ESTIMATED	2019-04-11 2021-09-01 2021-09-01

Reported research facilities

Clinical Research Facility, King's College HospitalLondon, London, United Kingdom

South London and Maudsley NHS Foundation TrustLondon, United Kingdom

King's College London Institute of Psychiatry, Psychology and NeuroscienceLondon, United Kingdom

King's College LondonLondon, United Kingdom

Mitul MehtaLondon, Camberwell, United Kingdom

This list includes mapped sites of matching trials, including international sites; locations without usable coordinates are omitted. Facilities are registry-reported trial sites, not an independently verified clinic or research-centre directory. Current services and contact details must be checked at the source.