Quetiapine
"I've been taking  Quetiapine for over 15 years, I started off taking 25 mg and over the years it was increased to 1000mg a night. Recently found out that my liver is double the size and I am quite concerned. I have been lowering my dose to 450 mg a night with clonazepam and I am still sleeping. I haven't had vivid dreams but started getting panic attacks last year. To be honest I am scared of the affects of taking this medication for over 15 years, my doctors, while being concerned haven't checked my blood regularly and now I am scared to death about my liver, reviews say that I need to stop taking this drug..but it works... Please make sure that you are having regular bloodwork done every 3 months. But this is the best sleep aid out there!"