Psilocybin-Assisted Therapy for Depression

This study is exploring psilocybin-assisted therapy (PAT) as a potential treatment for depression. Researchers are giving participants a 25 mg capsule of synthetic psilocybin (Usona Institute) to see how it affects their depression symptoms and psychological flexibility. The study aims to understand both the short-term (about 1 week after treatment) and longer-term (about 30 days after treatment) effects. You might be able to join if you are over 18, have been diagnosed with depression, and meet other health requirements. The study plans to enroll 50 participants. The current recruitment status is unclear.

Study design
This is an interventional study planning to enroll 50 participants. The phase of the study is not specified.
What's involved
Participants will receive psilocybin and undergo MRI scans and other biological measures before, during, and after treatment. Depression symptoms and psychological flexibility will be measured at 1 week and 30 days post-dose.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for about 30 days after each administration session to assess persisting effects.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07582120

Psilocybin-Assisted Therapy as a Treatment for Depression

Not Yet Recruiting
PHASE2Ages 18+InterventionalBasic science
Washington University School of Medicine
~50 participants
Updated 2026-05-20 on ClinicalTrials.gov
What's tested:Psilocybin (Usona Institute)

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Characterize ACUTE (~1 week post-dose) and PERSISTING (~30 days post-dose) effects of PAT in depressed adults at two possible administrations on depression symptom severity using the Montgomery-Asberg Depression Rating Scale (MADRS) score.
Measured over 1 week and 30 days post-dose for both administration sessions
+1 more outcome measured
Depression

NCT07582120

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Washington University School of Medicine

    St Louis, Missouristudy coordinator listed

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

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  • Characterize ACUTE (~1 week post-dose) and PERSISTING (~30 days post-dose) effects of PAT in depressed adults at two possible administrations on depression symptom severity using the Montgomery-Asberg Depression Rating Scale (MADRS) score.1 week and 30 days post-dose for both administration sessions

    The MADRS is a 10-item instrument used to assess depression severity. The total MADRS score ranges from 0-60, with higher scores indicating increased severity of depression

  • Characterize ACUTE (~1 week post-dose) and PERSISTING (~30 days post-dose) effects of PAT in depressed adults at two possible administrations on psychological flexibility using the Multidimensional Psychological Flexibility Inventory (MPFI).1 week and 30 days post-dose for both administration sessions

    The Multidimensional Psychological Flexibility Inventory (MPFI) is scored by averaging 60 items (or 24 in the short form) on a 1-6 scale (1 = "never true", 6 = "always true"). Higher average scores (1-6) indicate higher levels of the trait, with 12 subscales mapping onto psychological flexibility and inflexibility, allowing for detailed, sub-process, or global profiling.