Quetiapine
"So relieved to have found this. I've been suffering with inconsistent sleep/insomnia for months because of severe anxiety. I've been on Prozac for six weeks which is also known to worsen/induce insomnia in early stages. Tried benzos like Diazepam, which of course were helping, but obviously was only prescribed them for a couple of days at a time due to addictive properties. Doctor suggested Seroquel at a low dose (25mg) at night for sleep and it worked wonders immediately. Within a week I have found that I now need 50-75mg for adequate sleep though, but the doctor is fine with me using up to 100mg for sleep, particularly as I'm not using it during the day. No nasty side effects but has made my appetite return with a vengeance!"