"i gave this product 3 stars only because i have a high tolerance even though i am a tiny woman, so my experience may not be the norm. that being said, i had been using ambien for my insomnia for quite a few months and it was starting to take hours before it would put me to sleep. my dr. recommended we switch it up to see if another product worked better. i took lunesta for only two nights before i knew it was not for me. not only did it keep me awake, but it made my heart race and heightened my already bad anxiety. i immediately switched back to ambien and i will stay put w that. i&#039;m writing this as i hope this helps someone else like me. had i read some reviews like this, i would have never switched over."