We are all a little scared to go on immunomodulators (Imuran, 6mp, or aza), myself included. It helped me to weigh the risks versus the benefits. The odds of immunomodulators helping your uc symptoms are 60+ percent. The odds of side effects are less than 1 percent. Few get side effects, but they are serious when they occur. I've been on 6mp over two years, and have yet to experience a side effect.
If you want to read up on it more, here's some good risk verses benefit information from the Crohn's and Colitis Foundation of America:
Webcast:
programs.rmei.com/CCFA139VL/presentation/player.htmlTranscript
:
www.ccfa.org/assets/pdfs/risk-and-benefits-transcript.pdf