Lialda can take a few weeks to help. Yes, it also can make symptoms worse. There is a lot of trial and error with this disease. It is difficult to know if the flare is causing the symptoms to worsen or if the medicine is causing it. Your symptoms are very normal for a flare so it is most likely the flare and not the Lialda. How long have you been on the pred? My doctor did not have me taper off until I was symptom free.