"i don&#039;t have the typical insomnia. i can fall asleep (very easily, so easily i&#039;ve almost considered myself to be slightly narcoleptic). but i can&#039;t stay asleep, and i don&#039;t fall into that deep sleep that you&#039;re supposed to. i wake up several times a night and even though i can fall right back to sleep, if you&#039;re not getting &quot;restful sleep&quot; then you&#039;re going to be tired. ambien knocks me out! i take 10 mg. i am a 230lb female so i need the 10mg to sleep for 7 to 8 hours. sometimes if i am just exhausted i can break it in half and sleep fine. but 10mg is perfect for me. but i am co-dependent on it now. i don&#039;t mind it so much. it&#039;s nice to know i will be rested after going to bed at 10pm and waking up at 6am."