I am on Asacol: 4 tabs, 3 times a day (pretty much the max) and have no side effects.
I agree with other postings re: prednisone. You need to be at the level that gets you into remission for at least a week AFTER your symptoms have gotten under control....then taper by 5 mgs every week (unless you re-flare). Just general consensus here, no medical advice being dispensed....this has been my experience.