I have been taking seroquel 200mg at night to sleep and I want to get off of it. I was prescribed the vistril 50mg and it is not nearly enough... I am 45 200lbs..(another reason to get off of the seroquel) I need to adjust my dosage, I have an appt with my dr. but would like to have some more information to back myself up to raise the dosage, if that is possible. thank you.