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

2 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: 132 across 2 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

202311

202411

Current indexed registry status

Active, not recruiting11

Recruiting11

Reported research conditions

Psychedelic Experiences11

Neuroimaging11

Healthy Volunteers11

Healthy Participants With Lower-than-average Mental Well-being11

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

2 matching registry records. Dates are registry milestones, not promised results announcements.
Trial	Sponsor and phase	Status	Enrollment	Start / primary completion / completion	Research workflow
Multivariate Neural and Physiological Correlates of Psychedelic Sub-states: a Within-subjects, Healthy Volunteer Study With Experience-sampling NCT05698511 Psychedelic Experiences · Neuroimaging · Healthy Volunteers	Robin Carhart-Harris, PhD, MA PHASE1	Active, not recruiting Registry updated 2026-06-05	12 ESTIMATED	2023-07-31 2026-01-30 2027-01-30
2 x 2 Factorial, Double-blind, Randomized Trial of 'Set and Setting': a Translational Study in Healthy Volunteers NCT06626139 Healthy Participants With Lower-than-average Mental Well-being	Robin Carhart-Harris, PhD, MA PHASE2	Recruiting Registry updated 2026-06-04	120 ESTIMATED	2024-10-20 2027-11-30 2028-11-30

Reported research facilities

University of California, San FranciscoSan Francisco, California, United States

UCSF Mission BaySan Francisco, California, 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.