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
4 trials match this view; 10 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: 216 across 4 records with a reported count. Planned and actual counts are mixed; this is not a count of unique treated participants.
Recorded study-start years
Current indexed registry status
Reported research conditions
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
| Trial | Sponsor and phase | Status | Enrollment | Start / primary completion / completion | Research workflow |
|---|---|---|---|---|---|
| Efficacy in Relapse Prevention: Psilocybin in Alcohol Use Disorder With Depressive SymptomsAlcohol Use Disorder · Depressive Sympotoms · Psilocybin | Centre Hospitalier Universitaire de Nīmes PHASE3 | Recruiting Registry updated 2026-07-01 | 172 ESTIMATED | 2026-06-30 2030-06 2030-06 | |
| Evaluation of the Effect of a Single Dose of Psilocybin on Neural Correlates of Cognitive Control in Patients With Psychogenic Nonepileptic SeizuresPsychogenic Nonepileptic Seizures · Psilocybin | Centre Hospitalier Universitaire de Nīmes NA | Completed Registry updated 2025-08-21 | 4 ACTUAL | 2024-12-19 2025-01-03 2025-05-22 | |
| Effect of Psilocybin on the Positive Valence System in Treatment-resistant Depression: a Pilot Clinical Neuroimaging StudyDepressive Disorder · Depressive Disorder, Treatment-Resistant · Hallucinogens · Reinforcement, Psychology | Centre Hospitalier Universitaire de Nīmes NA | Completed Registry updated 2025-08-20 | 10 ACTUAL | 2024-11-19 2025-03-26 2025-06-26 | |
| Psilocybin in Alcohol Use Disorder With Comorbid DepressionAlcohol-Related Disorders · Depressive Disorder · Addiction | Centre Hospitalier Universitaire de Nīmes NA | Completed Registry updated 2025-03-19 | 30 ACTUAL | 2024-02-05 2024-11-19 2025-01-09 |
Reported research facilities
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.