Men and women:
- Between the ages 18 and 65
- Diagnosed with current PTSD (DSM-5 criteria)
- With a qualifying Index trauma resulting in PTSD that occurred during military service, military contractor, Department of Homeland Security, or law enforcement
- First experienced symptoms of PTSD after 2000
The purpose of this study is to test the safety and efficacy of an investigational study medication in patients with service-related PTSD.