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Study identifier: NCT03642028 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Suvorexant: A Dual Orexin Receptor Antagonist for Treating Sleep Disturbance in Posttraumatic Stress

Condition: Sleep Initiation and Maintenance Disorders · Stress Disorders, Posttraumatic  ·  Sponsor: VA Office of Research and Development

PhasePhase 4
Planned participants190
Who can joinAll sexes, 18 Years to 75 Years
Healthy volunteersNo

About this study

Post-traumatic stress disorder (PTSD) is a common consequence of combat that can result in trauma-related hyperarousal and sleep disturbances. Poor sleep, one of the most common complaints in Veterans with PTSD, can be distressing, impair concentration and memory, and contribute to physical health conditions, such as metabolic syndrome, inflammation, and cardiovascular disease. The orexin neuropeptide system underlies both sleep and stress reactivity. Suvorexant, a drug that reduces orexin, improves sleep in civilians, but has not yet been tested in Veterans with PTSD. This study will test whether suvorexant can improve sleep disturbances and PTSD symptoms in Veterans. Suvorexant may benefit Veterans by improving sleep quickly while also reducing PTSD symptoms over the long term, and with fewer side effects that were common in previous medications used to treat these conditions. Improving Veterans' sleep and PTSD symptoms could lead to better emotional and physical well-being, quality of life, relationships, and functioning.

This description comes directly from the study's public registry record.

Talk to the study team

Sabra S Inslicht, PhD  ·  (415) 221-4810  ·  sabra.inslicht@va.gov

Always discuss trial participation with your own doctor first.

Locations (4)

VA Long Beach Healthcare System, Long Beach, CALong Beach, California, United StatesRecruiting
San Francisco VA Medical Center, San Francisco, CASan Francisco, California, United StatesRecruiting
Salisbury W.G. (Bill) Hefner VA Medical Center, Salisbury, NCSalisbury, North Carolina, United StatesRecruiting
Ralph H. Johnson VA Medical Center, Charleston, SCCharleston, South Carolina, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT03642028