Iloperidone for Symptoms of Arousal in Post Traumatic Stress Disorder (PTSD)

"Subjects will receive oral iloperidone for 8 weeks. The first 2 weeks of treatment is called titration period and during this time the dose of iloperidone will be increased periodically from 1mg to a maximum of 8mg depending on response and tolerability.~During the remaining 6 weeks of treatment, called stable dose period, the subjects will receive a stable dose of iloperidone(defined during titration period)"

During 8 weeks subjects will receive oral placebo