I am outraged by what his Dr. said. Totally unacceptable. I am very glad you are changing this guy. Uggh! Moving on....there are many other things to try first ie: different oral mesalamines and rectal meds (honestly this I think helps so much even if the UC is throughout the colon) Than, things like Imuran and Remicade. He may want to add some fiber (ie: Metamucil and probiotics) but add them slowly.
Anyway, read through this site, learn what you can..change that ridiculous "g.i." and let us know. Welcome to the forum!
B