Vetted study · Verified Oct 7, 2026

Psilocybin-Assisted Therapy for Veterans With PTSD

◆ In progressPsilocybinPTSD

Open-label Phase 2 trial of psilocybin-assisted therapy in U.S. military veterans with PTSD. Underway now — closed to new enrollment; results pending.

This study is already underway and closed to new participants. It's listed here so you can see the research happening in the field right now.

This is an interventional study — the research team administers the treatment under a controlled, IRB-approved protocol. Participation never happens outside that protocol.

★ Featured study
Microdosing Vets
Are you a combat veteran who's microdosed?
An Ethics Approved CIIS study documenting veterans' microdosing experience. Combat veterans 21–50 with a PTSD diagnosis and prior microdosing experience are needed.
5-Min Screening →
Substance
Psilocybin
Status
In progress
Conditions
PTSD
Who can join
U.S. military veterans (21–64) with PTSD
Where
Columbus, OH
Run by
Ohio State University (A. Davis)
Registry ID
NCT05554094 ↗

Enrollment status

This study is not currently recruiting new participants. Check the official registry record for its current status.

What taking part involves

Everyone receives the treatment.Single group, no placebo arm — there is no chance of being assigned to a dummy.
15 spotsEstimated enrollment for the whole study, across every site.
Ages 21–64 

Participants will receive two doses of psilocybin, approximately 2 weeks apart, in conjunction with preparatory and post-psilocybin therapy sessions

Go to the official study page on ClinicalTrials.gov →

This study is not currently recruiting. Refer to the official registry record for updates.

Why this listing is here. Every study in our directory is hand-reviewed against a published set of standards — recruiting or clearly marked, registered or run by a known institution, open to U.S. veterans, and research-only (never facilitation of obtaining any substance). See how we vet →
If you're in crisis, the Veterans Crisis Line is free, confidential, and available 24/7 — you don't have to be enrolled in VA care. Dial 988, then press 1, or text 838255.

Study data is sourced from ClinicalTrials.gov (U.S. National Library of Medicine) and verified university/nonprofit sources. This page is educational and is not medical advice or an endorsement. Details can change — always confirm on the official page above. ← Back to all studies

The Debrief
Weekly Research Dispatch

The week in veteran psychedelic research — what's newly recruiting, what the latest studies found, and one thing worth knowing. A two-minute read, every Wednesday.