Could a common blood pressure pill stop PTSD before it starts?
NCT ID NCT03045016
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether prazosin, a drug normally used for high blood pressure, could prevent post-traumatic stress disorder (PTSD) in people who recently experienced a traumatic event like an accident or assault. Researchers gave the drug to 15 adults who showed signs of acute stress disorder within a week of the trauma. The goal was to see if blocking certain stress-related brain signals could stop PTSD from developing.
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
-
15 people
The number who actually took part.
- Started
-
Apr 2017
- Finished
-
Mar 2020
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 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 Hide 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: * Patient of age \>18 years and \<65 years * Victim of direct experience trauma (accident or physical aggression) * Presence of an ASD between D3 and D7 after the trauma according to DSM V criteria Exclusion Criteria: * Contra-indication to prazosin: orthostatic hypotension, right heart failure, other hypotensive therapy, 5-phosphodiesterase inhibitors (sildenafil) or diuretic, history of syncope or severe unexplained faintness, hypersensitivity known to quinazolines. * Alcohol and / or drug use at the time of the trauma * History of psychotic disorder * Suicidal risk defined by a score ≥ 2 on the Suicidal Ideas Item of the Beck Depression Inventory (BDI) * Protected or vulnerable Major * Persistence of a life threatening injury at D3 * Sexual assault * Only moderate head trauma can be included and therefore excluded patients with loss of consciousness greater than 30 minutes, Glasgow score less than 13, post-traumatic amnesia greater than 24 hours (Ruff et al., 2009) . * Prescription of morphine or morphine derivative in progress * Pregnancy or breastfeeding period * Lack of effective contraception in a woman susceptible to childbearing * Known hepatic dysfunction * Narcolepsy (Gelineau's disease) * Cardiac or vascular history including coronary artery disease * Strict low-sodium diet
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Acute stress disorder are added.
Genom att skicka in godkänner du våra Användarvillkor
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
-
Groupement Hospitalier Edouard Herriot - Emergency Psychiatry Department
Lyon, 69003, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Could a Two-Session online therapy ease earthquake trauma?
- Can a 4-session talk therapy prevent PTSD after a burn injury?
- Can ketamine therapy heal burn trauma? small trial aims to find out
- New pill could stop PTSD before it starts after car crashes
- Breathe away trauma: simple breathing drill may stop PTSD
- One pill to prevent PTSD? hydrocortisone shows promise after trauma