"i had trouble functioning during the day because i couldn&#039;t fall asleep until 1 or 2 am, then had to get up at 6 am.  my doctor prescribed 10 mg ambien (not cr) but because i&#039;m small i decided to cut one in half the first night.  i was able to sleep soundly almost immediately after my head hit the pillow and i slept all night.  that was about three years ago and i am still taking my half pill per night and sleeping well.   i have occasional times (maybe once every two months) that i don&#039;t sleep well with them, but i don&#039;t blame the pill for that.  follow the directions, if you don&#039;t it isn&#039;t the fault of the drug, it&#039;s your own fault."