This is an investigator-initiated, single site study, consisting of two phases: 8 weeks of open label treatment with levetiracetam (500-2000 mg/day) in patients with PTSD, and in those who demonstrate at least minimal improvement, 12 weeks of randomized, double-blind treatment with either levetiracetam or matching placebo.
The purpose of this study is to evaluate the short-term efficacy and safety of levetiracetam in post-traumatic stress disorder (PTSD) and to evaluate continuation effects of levetiracetam in preventing PTSD relapse. The hypothesis is that levetiracetam will be safe and effective in preventing relapse of PTSD.