"i&#039;ve been taking 10 mg.  every night for over a year. i used to be a napper sleeping 2hrs on and 2 hrs. off, sometimes i would stay awake for 3 days at a time. i&#039;m prescribed 10 mg. nightly, i sleep thru the night and feel rested the next day with no hangover effect. i do not take it if i feel i can sleep without it. i have never had an adverse reaction to it. this medication has changed my life."