"i have been on regular ambien 10mg since 2007. i have major insomnia and have tried alternatives and even quit drinking caffeine and limit sugar to no avail. i talked to my doctor yesterday and decided to try the cr because i just couldn&#039;t stay asleep. after 3-4 hours i was wide awake. well last night i had the most vivid dreams and still groggy this morning. it definitely helped me fall back asleep. (i pee a lot lol) i am glad i waited until the weekend to see how it would affect me. i took it at 8:30p and it&#039;s almost 9a and i feel slightly hungover. i&#039;m going to try it again tonight, but sleeping through the night might not be worth it. i can&#039;t believe some reviews say it&#039;s not affective because it immediately made me sleepy!"