Prednisone
"Had been in a flare for a month that gradually worsened to the point where I was doubled over in cramp, vomiting and passing blood up to 15 times per day. I am on pred now for the last 5 days and after the first day nearly all symptoms went away! Only going once per day now and feel great. I was so against taking pred but as of now I think I'm it's biggest advocate :) great stuff."