"i was prescribed the generic version (blue pill) because i had trouble falling and staying asleep.  i would fall asleep in about 30-60 minutes, but only to stay asleep for 2-3 hours!  than, i was wide awake.  this also left a horrible, bitter-like taste in my mouth the next day, especially when i drank water or tea.  i would not recommend this.  perhaps, the brand name version doesn&#039;t have this nasty after taste and lasts longer.  but, if your insurance does not cover brand name, i would skip this drug.  i would go with ambien.  my dr prescribed the generic version of ambien and it works better than generic lunesta!  i fell asleep within 15-20 minutes of taking it and stayed asleep for about 4 hours.  still not enough sleep though..."