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Phase 2 trial protocol tests oral hydrocortisone for PTSD prevention after traumaStudy tests single hydrocortisone pill after trauma to prevent PTSD symptoms

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Key Takeaway
Note: This is a protocol for an ongoing trial; no efficacy or safety data are available.

This is a published protocol for a phase 2 randomized controlled trial. The study aims to enroll 201 trauma survivors presenting to emergency departments in New York City and Tel Hashomer, Israel, who report high distress, panic, anxiety, or dissociation following trauma exposure. Participants are randomized to receive a single dose of oral hydrocortisone or a placebo within 6 hours of the traumatic event.

The primary outcome is the Clinician Administered PTSD Scale (CAPS), with assessments planned at 2, 6, 12, and 28 weeks post-treatment. The study is designed to test the hypothesis that hydrocortisone will accelerate the decline in PTSD symptom presence and severity compared to placebo. However, no efficacy or safety results are reported, as the study is ongoing with a primary completion date of July 6, 2025.

Safety data, including adverse events, serious adverse events, discontinuations, and tolerability, are not reported. Study limitations are also not reported in the protocol. The rationale presented suggests that an oral prophylactic could be a portable intervention for first responders, military personnel, and others at high risk of trauma exposure.

For clinical practice, this protocol outlines a hypothesis for secondary prevention but provides no data to support the use of hydrocortisone in this setting. Clinicians should await the completed trial results, including efficacy and safety outcomes, before considering any change in practice.

Researchers have designed a study to test whether a single pill of hydrocortisone, given soon after a traumatic event, might help prevent post-traumatic stress disorder (PTSD) symptoms. The medication would be taken within six hours of the trauma. The idea is based on previous research suggesting that early stress hormone treatment might help the brain process traumatic memories differently.

The study will include 201 people who come to emergency departments after experiencing trauma and report high levels of distress, panic, anxiety, or dissociation. Participants will be randomly assigned to receive either the hydrocortisone pill or a placebo pill. They will then be followed for 28 weeks to track their symptoms using standard PTSD assessment tools.

This is only a phase 2 trial protocol, meaning the study is planned but not yet completed. No results about whether the treatment works or is safe are available. The study's completion date is listed as July 2025. The researchers note that if effective, such a pill could be practical for first responders or military personnel to carry, but that remains a hypothesis until tested.

What this means for you:
This describes a planned study, not results. We don't know yet if the treatment works or is safe.

Study Details

Study typePhase2
Sample sizen = 201
EvidenceLevel 3
Follow-up41.8 mo
PublishedMar 2026
View Original Abstract ↓
Status: COMPLETED | Phase: PHASE2 Condition(s): PTSD, Acute Stress Disorder, Trauma-related Stressor Intervention(s): Placebo (DRUG), Hydrocortisone (DRUG) There is currently no evidence-based intervention for individuals exposed to trauma that is designed to aid recovery and prevent the development of post-traumatic stress disorder (PTSD). This randomized control trial proposes to test a one-time prophylactic treatment for the prevention of symptoms of PTSD and related mental health disturbances and the promotion of resilience using a single dose of hydrocortisone (HCORT) or placebo, administered within six hours of trauma exposure. People at risk for PTSD have demonstrated low cortisol levels before and in the aftermath of traumatic exposures and lower cortisol levels have also been observed in combat veterans with PTSD. Administering HCORT at the time of trauma would help boost the body's natural stress recovery systems to facilitate resilience. Participants who present to the emergency department following trauma exposure and report high distress, panic, anxiety or dissociation will be invited to participate in this clinical trial. 220 trauma survivors will be randomized and recruited at two locations: Mount Sinai Hospital in New York City, US, and a civilian/military hospital in Tel Hashomer, Israel. Trauma survivors will be assessed at 2, 6, 12 and 28 weeks post-treatment. HCORT closely resembles cortisol produced in the adrenal glands and released during stress. It is hypothesized that HCORT treatment will result in an accelerated decline in the presence and severity of PTSD and related mental health symptoms compared to the placebo group. Blood samples will be collected for analysis of potential biomarkers to obtain more information about the mechanisms of action of this intervention. The information obtained will be relevant in determining whether early intervention with a single dose of HCORT, compared to placebo, administered within several hours following trauma exposure, will reduce the risk of developing PTSD in trauma survivors. Detailed: Preliminary findings using HCORT in PTSD prevention have been encouraging. However, it is imperative to provide a more definitive study of HCORT effects across a wide range of demographic and traumatic exposures. In addition, prior studies used a single IV dose of HCORT administered in the Emergency Department (ED) and it is critical to determine whether effects would be comparable using oral HCORT. The advantage of an oral prophylactic is that a pill is a portable prophylactic that could be carried by first responders, military personnel and other people whose occupations expose them to risk of trauma exposure. The results of this RCT will add to the existing literature in several important ways. The study will be larger in scope, and will target a more extensive biological profile to el Primary Outcome(s): Clinician Administered PTSD Scale (CAPS) Enrollment: 201 (ACTUAL) Lead Sponsor: Rachel Yehuda Start: 2022-01-12 | Primary Completion: 2025-07-06
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