Answer:
Usually it takes very little time, sometimes within 5 minutes but also depends on if you eat or not. Eating something will make it take longer to work. But if you dont eat and you take the ambien make sure you are in bed. If you are not in bed when taking ambien on an empty stomach you will sometimes be very dizzy possibly or like the room is spinning and makes it for an unpleasant trip to the bed. So be in bed already when taking ambien