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
2 trials match this view; 3 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: 422 across 2 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.
Countries with reported trial locations
Sponsors recorded in this index
Matching trial records
| Trial | Sponsor and phase | Status | Enrollment | Start / primary completion / completion | Research workflow |
|---|---|---|---|---|---|
| Retrospective Observational Study of Intensity Effects in Psychedelic-assisted TreatmentMajor Depressive Disorder (MDD) · Anxiety Disorders · Substance Use Disorder (SUD) · PTSD - Post Traumatic Stress Disorder | University Hospital, Geneva Phase not reported | Active, not recruiting Registry updated 2025-10-02 | 376 ESTIMATED | 2020-06-01 2025-04-30 2025-09-30 | |
| LSD Treatment in Persons Suffering From Anxiety Symptoms in Severe Somatic Diseases or in Psychiatric Anxiety Disorders: a Randomized, Double-blind, Placebo-controlled Phase II StudyPatients · Anxiety Disorders | University Hospital, Basel, Switzerland PHASE2 | Completed Registry updated 2021-12-22 | 46 ACTUAL | 2017-06-23 2021-12-15 2021-12-15 |
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.