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Could a nasal spray of insulin help PTSD?

NCT ID NCT04044534

Symptom relief Sponsor: VA Connecticut Healthcare System Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jul 14, 2026 · Updated 2 times

Summary

This study tests whether a daily nasal spray of insulin can reduce PTSD symptoms. Twenty adults with current PTSD will receive either insulin or a placebo for several weeks. Researchers will measure symptom changes using a standard PTSD scale.

What this could mean

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

Active substance
intranasal insulin
What this could lead to
If it works, this could point toward a new way to ease PTSD symptoms using a familiar drug.
What could go wrong
This is a very small early-phase trial with only 20 people, so results may not apply widely. Insulin can cause low blood sugar or nasal irritation.

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

10 people

The number who actually took part.

Started

Oct 2024

Finished

May 2026

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

21 to 65 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, 21-65 years old * Current PTSD * Able to provide written informed consent Exclusion Criteria: * Unstable medical condition, clinically determined by a physician * Diabetes requiring insulin or oral hypoglycemic agents * Moderate-severe traumatic brain injury * Current psychotic disorder, bipolar disorder, cognitive disorder in the past 12 months * Current substance use disorders (except alcohol, tobacco, or cannabis) in the past 3 months * Changes in doses of psychotropic medications in the past 4 weeks * Initiation of individual therapy or counseling in the past 4 weeks * Imminent suicidal or homicidal risk * Contraindication to Insulin * History of claustrophobia * Presence of cardiac pacemaker or other electronic device or ferromagnetic metal foreign bodies in vulnerable positions as assessed by a standard pre-MRI safety screening questionnaire

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Conditions

The condition(s) this trial relates to.

post-traumatic stress disorder

As listed by the trial registrant

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

PTSD

Contacts and locations

Locations

  • VA Connecticut Healthcare System

    West Haven, Connecticut, 06516, United States

More trials for these conditions

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