insomnia
"I am a mental heath  professional that wanted to switch from Ambien to Belsomra 15 MG.  What a nightmare!!  This drug shouldn't be on the market.  Read feedback from others.  I had nightmare all night was being murdered by serial killer and was could not move or wake myself up.  HORRIBLE.  Took it 10 nights.  No sleep, just horrible dreams.   Read prior reviews."