I am diagnosed with Ulcerative Colitis. My doctor wants to try a new medication as the old one (Lialda) was not working well. He said he is going to put me either on Asacol or Sulfasalazine but isn't sure which yet. He plans to do some research and talk to other doctors first. That's fine but I figured I'd do some research as well. Can anyone tell me which is better for Ulcerative Colitis?