panic disorde
"After not sleeping for three days went cold turkey from Ambien. Dont do this...and after watching the movie Munich, I had a full on Panic Attack.  At first I thought I was having a stroke then a heart attack. I felt my life force living my body then I got really scared of dying. I had a distinct taste of metal in my mouth and slight pain in my upper torso with trouble catching my breath.  Then I really thought I was having a heart attack. I called 911..they showed up an hour later.  My blood and EKG tested fine. No drugs or booze. I used to think panic attacks were all in the head and a joke...I learned my lesson. I take 0.5x2 a day. It helps."