"i have taken lunesta 3mg for about 5 years now.  never have had bad dreams or any instances of sleepwalking, etc.  i take it &amp; about 45 minutes later i am fast asleep until my alarm clock goes off.  prior to finding lunesta, i had insomnia for years &amp; i cannot tell you how much of a lifesaver this medicine has been!  tried ambien but it did not work for me at all.  also tried sonata, but would wake up a few hours after going to sleep.  i&#039;ve had no problems with tolerance, either.  the only &quot;bad&quot; thing is the crappy taste in one&#039;s mouth, but i discovered that brushing my tongue when i brush my teeth before going to bed gets rid of 90% of it, along with using biotene mouthwash (the dry mouth brand).  hooray!  my insurance will now cover it, too!"