I've taken it on and off over the last 2-3 years. 10 or 20mg, predominantly for insomnia and anxiety after my best friend died. I'm now off it for good. Coming off it was easy at this dose, just stopped it, no problems apart from one very sleepless night.
Give it at least a week, unless of course it is making you seriously ill. The blurb says it takes up to six weeks to work I think, but personally I noticed a difference before that. You will feel groggy for a few days, it will pass. Maybe it's best to start on a Friday evening so by Monday you'll be over the worst (assuming you work Monday to Friday).
I had some vivid dreams, but no hallucinations.
Time when you take the tablet carefully, you may need to experiment to find what works best for you.
If I wanted to go to sleep at 21:30 I would take my tablet at 19:00. I found if I took it at say 18:00, I'd be struggling to stay awake at 20:30! Equally if I took it too late, say 21:00 it would be VERY difficult to wake up in the morning.
Pros: slept better, felt more relaxed, no side effects (apart from slightly vivid dreams, nothing bad though)
Cons: difficult to wake up in the mornings sometimes, not feeling "sharp"
Hope this is helpful and your treatment is successful.