Update: My doctor appointment went very well today, he has started the process of weaning me off Seroquel, taking half my dose of Tegretol and remaining on it, and has started me on a low 20mg dose...
I've been on regular Seroquel for about 5 years and about 2 years ago it seems to have slowly stopped working, even after an increase from 200mg. to 300mg., along with Tegretol 200 mg. for bi-polar...