I first got immediate good sleep from Ambien. However, I began to develop a kind of nervousness, almost like jet lag. When arriving at work I was nearly shaking in my hands. I thoght it might be some mild alcohol consumption to I stoped that. Then I went to good meals 3 times a day. Still nothing. I just stopped Ambien and feel like a new person. I don't sleep well at night but at least I'm back to what I think it normal. I was at a point where I thought I was having a nervous breakdown. As soon as I got off Ambien I am normal again. Jim