insomnia
"I have a different experience than these reviews I am reading here.  I do not think this is the best drug ever and really have a hard time believing the 9 and 10 ratings.  But also this drug is not a total dud and does not deserve so many low scores.  To me this is the second best drug I have tried for insomnia.

After many years of struggling including lost work days, Ambien was a miracle to me and since going on it 8 years ago. I only needed about 5mg each night to be out and have 0 side effects from the stuff.  But I want a safer alternative at least for some of the time.  Belsomra seems to be fitting that need.  While it is not even close to being as effective or side effect free as Ambien, it is much better than Sonata or Rozerem.  I do need a higher 20mg dose for the stuff.  It usually kicks in after about 45 minutes and consistently puts me to sleep at that dosage. I have been learning to manage a slight headache / dehydration effect from it by keeping a water bottle by my bed.  I am slightly drowsy for a couple hours in the AM (although it wears off completely and am fine by about 9am)."