Blood pressure drug prazosin tested against diabetes risk in PTSD

NCT ID NCT07862712

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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
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 Results may not be published yet.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

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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Oct 07, 2026 · Last updated Oct 16, 2026 · Updated 3 times

Summary

Researchers are studying how PTSD and insulin resistance, a precursor to diabetes, might be connected in Veterans. The trial gives all participants prazosin, a medication used for high blood pressure and some PTSD symptoms, for 12 weeks. The team measures changes in insulin sensitivity and looks at whether depression symptoms shift along with it. The goal is to see if targeting the body's stress signaling can improve how the body handles sugar.

What this could mean

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

Active substance
prazosin, a blood pressure medication also known as Minipress
What this could lead to
If prazosin helps, it could point to a specific biological pathway linking PTSD to diabetes risk, guiding future treatments to prevent insulin resistance in Veterans.
What could go wrong
This is a small Phase 4 study of 70 Veterans, so results may not apply to everyone. Prazosin can cause dizziness and low blood pressure, and it may not improve insulin sensitivity at all.

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 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 70 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Mar 2027

An estimate. Start dates often move.

Expected to finish

Dec 2032

An estimate. End dates often move.

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 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: 1. Veteran of the US military 2. Diagnosis of post-traumatic stress disorder (PTSD) defined by Diagnostic and Statistical Manual of Mental Disorders (DSM-5) symptom count on Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) Exclusion Criteria: 1. Any form of diabetes as defined by the American Diabetes Association. Exceptions may be made for participants with previously undiagnosed, early, asymptomatic Type 2 Diabetes Mellitus (T2DM) who meet American Diabetes Association criteria for diabetes during study screening who wish to be included 2. Diagnosis of DSM-5-defined bipolar I, schizophrenia spectrum or other psychotic disorders (by MINI) 3. Diagnosis of dementia or related progressive neurocognitive disorder, based on clinical records 4. Diagnosis of moderate or severe substance use disorder (except for caffeine and nicotine) during the preceding 3 months 5. Current use or use within the past 2 weeks of a medication with significant 1-AR or 2-AR activity (prazosin, doxazosin, alfuzosin, clonidine, guanfacine), or opiates 6. Current use or use within the past 3 months of antipsychotics, glucocorticoid medications, or glucose-lowering medications, including but not limited to metformin and GLP-1 agonists 7. Contraindication to prazosin 8. History of moderate or severe Traumatic Brain Injury (TBI) as defined by the Ohio State University TBI Identification Method 9. Increased risk of suicide that necessitates inpatient treatment, intensive outpatient care, or treatment excluded by the protocol 10. Pregnancy or lactation, or anticipated pregnancy at any point during study participation 11. Ongoing or initiation of new treatment with evidence-based trauma-focused therapy for post-traumatic stress disorder (PTSD) within 2 weeks of baseline. Supportive psychotherapy may be continued during the study. 12. Current enrollment in another interventional trial for post-traumatic stress disorder (PTSD)

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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.

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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  3. A doctor treating you

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Contacts and locations

Locations

  • VA Puget Sound Health Care System Seattle Division, Seattle, WA

    Seattle, Washington, 98108-1532, United States

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