"i was prescribed this after being on ambein for a while. the ambien kinda ran it&#039;s course. i took this the first night i felt relaxed but not sleepy at all. it took me about an hour to fall asleep and then i woke up 4 hours later and couldn&#039;t go back to sleep. i decided to give it a second try with melatonin . i can tell the medication wasn&#039;t working again. but i was so tired from the lack of sleep i couldn&#039;t even tell. and it was giving me headaches. i&#039;m done. i&#039;m taking my ambien this weekend until i get a hold of my doctor. the ambien works much better, not well, but better. i don&#039;t recommend this, however, everyone is different."