Risperidone
"It has significantly reduced anxiety, panic attacks and flashback symptoms, it has also made it possible for me to try and and work on the causes without being completely overwhelmed all the time.  When I first started it, and also when I increased my dosage I slept about 18 hours a day for a week and a half, but after that my sleep went back to normal 8 hours or so, and I stopped feeling exhausted all the time."