Insomnia
"I have been an Ambien/Zolipem user for years and sleep great with it.  However my doctor gave me Belsomra samples to try.  Wow.  Nothing.  Literally nothing.  Stayed awake all night on this stuff.   Not sure what it&#039;s supposed to do but I can&#039;t recommend it.  Went back to zolpidem and slept all night."