I'm just going to throw some alternative options into the ring.
Colloidal Silver (like Sovereign Silver) you can't develop a resistance to CS. CS enemas are even more effective.
Fast - I once got pouchitis really bad due to sugar, I stopped eating all food except Greek yoghurt , VSL #3 and Indian Triphala berry powder, within 3 days my pouch was working brilliantly, maybe the best ever. If you can fast and your not under weight I highly recommend it.
Diet - cut out all sugar/starch/dairy/alcohol/caffeine
Eat simple like Paleo , but alter the diet to what agrees with you.