Suvorexant
"Dr tried to get me to switch to this from Ambien.  I finally gave in and was given six 15mg samples.  I am on the 5th night, and have fallen asleep 1 time before 2am.  Tonight I took it at 9:30 along with my melatonin ultra and benadryl.  It is now almost 12:30 and I'm wide awake.  I'll probably get some sleep around 4a.m. like I generally do, but I will wake up feeling awful.  This drug gives me the worst feeling in the morning, like I'm sleepwalking with a migraine.  I'm going back on the Ambien."