"i only slept 20 minutes of rem sleep, with a slight dream, all night long. no effect what so ever. it was like i didn&#039;t take anything. the belsomra was 20mg, i couldn&#039;t believe that it don&#039;t work for me, at all.  when i take 30mg of temazepam , i get about 5 hours of good sleep.  i rate belsomra 20mg a grade of f.  i rate temazepam a grade of a.  by the way ambien gets a f too."