insomnia
"This was a nightmarish experience for me. I ran out of my regular Temazepam and forgot to pick it up at the pharmacy, so I popped a 20mg Belsomra that my MD gave me a free sample of. About an hour into the drug, I started feeling very dizzy and my head felt so heavy, and I immediately felt this strong urge to knock out and fall into a deep slumber, so I went to my bed and started falling asleep. However, I started experiencing major sleep paralysis - it felt like it lasted for a long time, and my body just couldn't move even though my mind was fully aware and conscious of what was happening. 



Later on during the night, I kept falling asleep and waking up sporadically. By this morning, I was beat and vowed never to take this again."