My doc generally has me stop the 5-ASA meds too when I am on prednisone. I don't know why. I always go back on when I am tapering down from the pred. Good luck...it sucks to have a flare.
UC since 2002- had remission for 6 years
recent flare 05/09- severe flare- pancolitis
Currently trying lialda and not sure if I like it, multivitamin, probiotics, fish oil, iron supplement
tapered off prednisone 8/21/09