My son was on 300mgs., so it was not a tremondously high dose.
Alison, I don't have any info on urination problems......but I have to say 200 to 400 is a huge jump. Would it be possible to titrate up more slowly? I know Seroquel does slow everything down, and I have noticed my son peeing more since he was off of it, so it is possible those urinary tract muscles are too relaxed when on Seroquel. I am certainly not a Dr., and I definitely did not see any info on the web when I looked - but gosh, I hope you don't have to go the ER again! You have had the worst couple of days!!!
I'll be thinking of you, and hope that things settle down this weekend.