Hi, if you think you're in a flare, you should probably contact your GI and see if you need to change any of your meds. As ediekristen said, flares vary for different people. My current flare has been going on since February and I'm still not in remission yet even with a bunch of med changes!
Probiotics may be a good thing to try since it adds good bacteria into your bowels. The Activia yogurt that bellski mentioned has probiotics in it (as do the DanActive drinkable yogurts). I'm sure you search probiotics on this site, you'll come up w/ many threads!
Female, Age 19, Dx w/ UC August 2007
9 Asacol, Rowasa, 1000 mg Canasa, Proctofoam, Rifaximin 2/day
Digestive Advantage (Crohn's & Colitis), 1 Florastor, 50 mg 6MP,1 Primadophilus reuteri, Remicade (2nd infusion 06/26/08), 2.4 g Lialda
*exploring the option of surgery