I took Ambien for 4 yrs. The longer I took it, the worse things got. I took 10 mgs, as 5 mgs did not work long for me. I would sleep walk, have horrible dreams, eat in bed, get up and do things and not remember but find things different than when I went to bed. I would semi wake up and make stuff to eat. Maybe pack my lunch, etc. Wake up later and find carrots in my bed, etc. But one day, I was so tired that I fell asleep with out the ambien. I had the most scary, frightening, night terror that I sat up and was shaking and started crying and pacing the floor. I wanted to call 911 and then remembered it was in my head. I was so scared I could not go to sleep. I stayed up all night. I talked to my pharmacist and he said slowly get off. Keep cutting the doses in half until you have weaned off. It took a while, but I am thrilled to be off ambien. Wish I could sue the company. Been off for over a yr. now. I sleep when my body lets me or I take something mild to relax sometimes. The CR compound is the same medicines. I would not advise anyone to take ambien!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!