Psilocybin-Research.comSearchable psilocybin and psilocin bibliometric database.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
7 trials match this view; 7 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: 383 across 7 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 |
|---|---|---|---|---|---|
| Efficacy of Psilocybin and Trazodone Combination in Treatment-resistant Depression: a Randomized Controlled Proof-of-concept Study (PSILOTRAZ)Depression - Major Depressive Disorder · Treatment-resistant Depression (TRD) | Centre Hospitalier St Anne PHASE2 | Recruiting Registry updated 2026-09-21 | 112 ESTIMATED | 2026-06-30 2029-12-31 2030-06-30 | |
| Safety, Tolerability, Outcomes of Psilocybin for Depression (STOP Depression) in Veterans With Spinal Cord InjurySpinal Cord Injury · Depression - Major Depressive Disorder · Veteran | James J. Peters Veterans Affairs Medical Center PHASE1, PHASE2 | Recruiting Registry updated 2026-08-10 | 30 ESTIMATED | 2026-08-06 2028-03-01 2028-03-01 | |
| A Pilot Mechanistic RCT of Psilocybin With Mindfulness-based Therapy vs Support for Posttraumatic Stress Disorder (PTSD)Post Traumatic Stress Disorder · Depression - Major Depressive Disorder | Anthony P King PHASE2 | Recruiting Registry updated 2026-06-25 | 30 ESTIMATED | 2026-07-01 2029-09 2029-12 | |
| Group Psilocybin-assisted Cognitive Behavioral Therapy for Major Depressive DisorderDepression - Major Depressive Disorder · Psilocybin · Cognitive Behavioral Therapy | University of California, Los Angeles PHASE2 | Not yet recruiting Registry updated 2026-05-04 | 30 ESTIMATED | 2027-01 2028-12 2028-12 | |
| Elucidating the Relevance of the Psychedelic Experience to Psilocybin's Anti-Anhedonic Effects: A Randomized, Open-Label, Cross-Over Functional Magnetic Resonance Imaging TrialDepression - Major Depressive Disorder · Anhedonia | Medical University of Vienna PHASE1 | Recruiting Registry updated 2026-03-24 | 85 ESTIMATED | 2025-11-01 2028-05-31 2028-05-31 | |
| Safety, Feasibility, and Tolerability of Psilocybin Treatment for Individuals With Functional Impairment Related to Mood, Anxiety, Trauma and/or Addiction Symptoms: An Open-label Proof-of-concept StudyTransdiagnostic · Depression - Major Depressive Disorder · Anxiety · PTSD Symptoms · PTSD · Substance Use · Substance Use Disorder (SUD) · OCD | Yale University PHASE1 | Recruiting Registry updated 2026-03-11 | 50 ESTIMATED | 2024-10-17 2027-12 2027-12 | |
| Measurement of Serum Cytokine Levels in Samples Collected as Part of a Clinical Trial of Psilocybin for Treatment-resistant Depression.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 |
Reported research facilities
GHU Paris Psychiatrie and NeurosciencesParis, France
James J. Peters Department of Veterans Affairs Medical CenterThe Bronx, New York, United States
The Ohio State University Medical CenterColumbus, Ohio, United States
UCLA Semel InstituteLos Angeles, California, United States
Medical University of Vienna, Department of Psychiatry and Psychotherapy, Division of General PsychiatryVienna, State of Vienna, Austria
Connecticut Mental Health Center - Yale School of MedicineNew Haven, Connecticut, United States
King's College London Institute of Psychiatry, Psychology and NeuroscienceLondon, 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.