sickofitall...this link describes the side effects of imuran, which seem to match with what you're describing, doesn't mention sneezing but that doesn't mean it's not from the imuran (though it could be a cold that you've developed coincidentally at the same time as starting the imuran)...
bee propolis caps 500mg one cap twice/day
omegas 369 caps one cap twice/day
probiotics 10 billion cfu once/day
vitamins C-calcium ascorbate (easy on the gut) and vitamin A each once/day
Prodiem fibre supplement one cap before bed
I've also altered my diet (no junky stuff at all, processed, fast-foods, refined sugars, ect) and exercise regularly.
I went from 30+ bloody BM's/day with lots of lower back pain to an average of 5/day no bleeding no back pain and completely formed stools, still have severe urgency issues.
~~~~~~~~My bum is broken....there's a big crack down the middle of it! LOL :)~~~~~~~~