Ambien is a prescription drug that helps you fall asleep if you have insomnia or trouble falling asllep for more than 3 days.  If you take the medicine as perscribed it works very well, you fall asleep within fifteen to thirty minutes of taking it, but you have to make sure that you are able to get at least eight hours of sleep.  When you wake up you do not feel drowsy or have any effect from the drug.  If you take more than prescribed it get result in you sleep walking and while sleep walking you may do things that you will not remember doing the next day.  I have taken more than prescribed...