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
4 trials match this view; 2 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: 108 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.
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 |
|---|---|---|---|---|---|
| Low-Dose Psilocybin Therapy for Palliative Care Patients With Chronic Cancer Pain Requiring OpioidsHematopoietic and Lymphatic System Neoplasm · Malignant Solid Neoplasm | Roswell Park Cancer Institute PHASE2 | Not yet recruiting Registry updated 2026-08-12 | 20 ESTIMATED | 2026-09-15 2027-05-05 2027-05-05 | |
| A Phase 2a Study of Group Retreat Psilocybin Therapy for Cancer-Related Anxiety and DepressionAnxiety · Depression · Hematopoietic and Lymphatic System Neoplasm · Metastatic Malignant Solid Neoplasm | University of Washington PHASE2 | Active, not recruiting Registry updated 2026-07-31 | 18 ESTIMATED | 2026-05-19 2026-12-01 2027-05-01 | |
| A Phase 1/2 Study of a Group Model of Psilocybin-Assisted Therapy for Cancer-Related Anxiety in Patients With Metastatic CancerHematopoietic and Lymphatic System Neoplasm · Metastatic Malignant Solid Neoplasm | University of Washington PHASE1, PHASE2 | Completed Registry updated 2025-11-05 | 55 ACTUAL | 2023-06-27 2024-04-08 2024-10-17 | |
| A Phase 1 Study of a Second Psilocybin Group Retreat for Partial Responders With Anxiety Associated With Metastatic CancerHematopoietic and Lymphatic System Neoplasm · Metastatic Malignant Solid Neoplasm | University of Washington PHASE1 | Completed Registry updated 2025-10-14 | 15 ACTUAL | 2024-11-19 2025-09-30 2025-09-30 |
Reported research facilities
Roswell Park Cancer InstituteBuffalo, New York, United States
Fred Hutch/University of Washington Cancer ConsortiumSeattle, Washington, United States
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.