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Could ketamine help veterans overcome PTSD faster?

NCT ID NCT04560660

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Aug 12, 2026 · Updated 5 times

Summary

This study tested whether repeated doses of ketamine, an FDA-approved anesthetic, could speed up the effects of talk therapy (Prolonged Exposure) for PTSD in 75 veterans. Participants received either ketamine or a placebo alongside therapy. The goal was to see if ketamine could reduce PTSD symptoms more quickly than therapy alone.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Ketamine
What this could lead to
If it works, this could point toward a faster way to reduce PTSD symptoms in veterans, making therapy more effective in less time.
What could go wrong
This is a small, early-phase trial with only 75 participants. Results may not apply to all PTSD patients, and ketamine can cause side effects like dissociation.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

73 people

The number who actually took part.

Started

Mar 2021

Finished

Oct 2025

Lead sponsor

A government agency

The lead sponsor is a US federal agency other than the NIH.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 75 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * male or female Veterans between the ages of 18 and 75 years * diagnosis of PTSD * ability to provide written informed consent Exclusion Criteria: * females who are currently pregnant or breastfeeding * current high risk for suicide * history of moderate/severe head injury * history of psychosis * current episode of mania/hypomania * severe substance and/or alcohol use disorder in the last 6 months

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Minneapolis VA Health Care System, Minneapolis, MN

    Minneapolis, Minnesota, 55417-2309, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.