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ClinicalTrials.gov public records Last synced May 22, 2026, 1:18 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Psilocybin Clear all
Active, not recruiting Phase 3 Interventional
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Psilocybin 25 mg, Inactive Placebo, Psilocybin 5 mg, Psychosocial Support
Drug · Behavioral
Lead sponsor
Usona Institute
Other
Eligibility
18 Years and older
Enrollment
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
29
States / cities
Birmingham, Alabama • Fayetteville, Arkansas • Little Rock, Arkansas + 25 more
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Obsessive-compulsive Disorder (OCD)
Interventions
Psilocybin 100 mcg/kg, Psilocybin 300 mcg/kg, Lorazepam 1 mg
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 29, 2024 · Synced May 22, 2026, 1:18 AM EDT
Active, not recruiting Phase 2 Interventional
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Psilocybin, Ketamine
Drug
Lead sponsor
Peggy C Nopoulos
Other
Eligibility
25 Years to 65 Years · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 16, 2025 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Borderline Personality Disorder, Major Depressive Disorder
Interventions
Psilocybin
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced May 22, 2026, 1:18 AM EDT
Not listed Phase 2 Interventional
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Psilocybin
Drug
Lead sponsor
Maryland Oncology Hematology, PA
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Phantom Limb Pain
Interventions
Psilocybin, Placebo Niacin
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 1 Interventional Results available
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Psilocybin, Cognitive behavioral therapy
Drug · Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 60 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced May 22, 2026, 1:18 AM EDT
Terminated Phase 1 Interventional
View directory record Official record
Conditions
Post-Traumatic Headache
Interventions
Placebo oral capsule, Low Dose Psilocybin, High Dose Psilocybin
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Early Phase 1 Interventional
View directory record Official record
Conditions
Methamphetamine Use Disorder
Interventions
Psilocybin 25 mg
Drug
Lead sponsor
Kevin Murnane
Other
Eligibility
25 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 6, 2025 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Depression, Anxiety, Psilocybin-Assisted Psychotherapy, Advanced Cancer
Interventions
Psilocybin, Niacin
Drug · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
25 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced May 22, 2026, 1:18 AM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Chronic Low Back Pain (CLBP), Physical Therapy, Psilocybin
Interventions
Psilocybin 10 mg, Psilocybin 25 mg, Niacin 100 mg
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 28, 2025 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Alcohol Use Disorder (AUD), PTSD
Interventions
Psilocybin 25 mg, Maltodextrin (Placebo)
Drug
Lead sponsor
Nathan Brashares Sackett
Other
Eligibility
21 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced May 22, 2026, 1:18 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Depression
Interventions
Psilocybin
Drug
Lead sponsor
Matthew Hicks
Other
Eligibility
21 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Spinal Cord Injury, Depression - Major Depressive Disorder, Veteran
Interventions
Psilocybin (Usona Institute)
Drug
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
22 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced May 22, 2026, 1:18 AM EDT
Active, not recruiting No phase listed Observational
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
psilocybin
Other
Lead sponsor
Healing Advocacy Fund
Other
Eligibility
21 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy Participants With Lower-than-average Mental Well-being
Interventions
Psilocybin, Context 1, Context 2, Placebo
Drug · Behavioral
Lead sponsor
Robin Carhart-Harris, PhD, MA
Other
Eligibility
21 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 26, 2025 · Synced May 22, 2026, 1:18 AM EDT
Not yet recruiting Phase 2 Interventional
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Psilocybin
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Transdiagnostic, Depression - Major Depressive Disorder, Anxiety, PTSD Symptoms, PTSD, Substance Use, Substance Use Disorder (SUD), OCD
Interventions
Psilocybin
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced May 22, 2026, 1:18 AM EDT
Withdrawn Phase 2 Interventional
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Psilocybin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm
Interventions
Psilocybin, Psychotherapy, Quality-of-Life Assessment, Questionnaire Administration
Drug · Behavioral · Other
Lead sponsor
Emory University
Other
Eligibility
26 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced May 22, 2026, 1:18 AM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Psychedelic Effects in Healthy Volunteers
Interventions
Pindolol, Placebo, Psilocybin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 60 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced May 22, 2026, 1:18 AM EDT
Active, not recruiting Phase 1 Interventional
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Low Dose Psilocybin, Placebo, Medium Dose Psilocybin
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced May 22, 2026, 1:18 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Psychedelic Experiences, Amnesia
Interventions
Psilocybin and Midazolam
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced May 22, 2026, 1:18 AM EDT
Recruiting Early Phase 1 Interventional
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Psilocybin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced May 22, 2026, 1:18 AM EDT