I was prescribed zimovane for severe insomnia. I was told it *could* cause hallucinations, not likely but could. I've recently watched a documentary about it and have found out that people use this drug recreationally to hallucinate. Now I'm writing this in a temper and at 3am because it just caused me to hallucinate for 3 WHOLE hours. Scary,terrifying hallucinations. At one point I couldn't even figure out where I was (I was in my bed) I don't know how this drug is even legal, but I tell you, I'm going to have some roaring match with my psych when I see him!!!! NEVER ever taking this drug again. Just thought I'd give you all a heads up on this drug and its potential side effects. Don't worry, this does NOT happen to everyone. I've been on it 6 months and this has been the only incident.