I think it's a fine line and looking back to see if you were actually being treated with the best possible combination initially, and whether your flare was progressing or you being worse because you were either being undertreated (not oral/rectal) or overtreated (too much oral to create some symptoms).
If you were on prednisone at the same time, maybe there was an interaction....etc.
My symptoms increased somewhat when I was first put on Asacol before I started using the enemas. It was a month till my c-scope...I started the enemas that night.
My doc started me on oral 5aSA, low dosage and increased. Not starting with 12 and going down. Different approach.
The retention enemas have a 2g and 4g...I would suggest that if you suspect you are sensitive to them, you should start at the 2g.
How much Asacol/colazal, etc did you try initially?
Did you start on fish oil immediately upon your diagnosis?
What other things could have contributed to your continued diarrhea...some foods can make one worse. Fibre supplements can help bulk the stool, probiotics can help balance the flora in the digestive tract.
Were you tested for c.diff or other invaders as well?
Lots of questions...but it could still be that you're sensitive to salicylates regardless. Remember there are foods that are high in salicylates...you might want to explore that as well.
Let me also add that 5ASA meds do take longer to show marked improvement. And you have pancolitis...again something that would take longer.
If the enemas are too much, there are always suppositories. Not the best treatment option from my perspective if you can use the enemas...but much better than not treating the rectum at all. They can be used up to 3 times a day.
There is also oral/rectal topical steroid meds...not systemic as in prednisone, but one can still get steroid side effects if one is sensitive or on too high a dosage.
Definitely trial and error.
quincy