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

5 trials match this view; 1 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: 379 across 5 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

201311

201911

202022

202311

Current indexed registry status

Completed55

Reported research conditions

Healthy22

Alcohol Use Disorder11

Depressive Disorder, Major11

Altered Waking States of Consciousness in Healthy Humans11

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

5 matching registry records. Dates are registry milestones, not promised results announcements.
Trial	Sponsor and phase	Status	Enrollment	Start / primary completion / completion
Does Serotonin System Stimulation Increase Pro-social Behavior? - A Comparative Pharmacological Neuroscientific Study in Healthy Humans NCT06081179 Healthy	University of Zurich PHASE1	Completed Registry updated 2025-11-19	122 ACTUAL	2023-10-24 2025-09-22 2025-09-22
Phase II, Randomized, Double Blind, Placebo Controlled, Parallel Group, Single Center Study of Psilocybin Efficacy and Mechanism in Alcohol Use Disorder NCT04141501 Alcohol Use Disorder	University of Zurich PHASE2	Completed Registry updated 2023-09-21	37 ACTUAL	2020-06-08 2023-03-14 2023-09-14
Phase II, Randomized, Double Blind, Placebo Controlled, Parallel Group, Single Center Study of Psilocybin Efficacy in Major Depression NCT03715127 Depressive Disorder, Major	University of Zurich PHASE2	Completed Registry updated 2022-04-29	55 ACTUAL	2019-03-11 2021-10-12 2022-04-12
Characterization of Altered Waking States of Consciousness in Healthy Humans NCT03853577 Altered Waking States of Consciousness in Healthy Humans	University of Zurich NA	Completed Registry updated 2021-04-29	25 ACTUAL	2020-07-08 2021-04-25 2021-04-25
Beyond the Self and Back: Neuropharmacological Mechanisms Underlying the Dissolution of the Self NCT03736980 Healthy	University of Zurich NA	Completed Registry updated 2020-11-04	140 ACTUAL	2013-10-01 2018-12-31 2018-12-31

Reported research facilities

Psychiatrische Universitätsklinik ZürichZurich, Switzerland

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.