Hi neondream,
I just posted to someone whose SO may have been having a severe reaction to Lialda...I was just given samples and had just read the sales reps booklet, along with my own severe reaction which went unrecognized (GI did not want to admit it), it compelled me to reply...
You can use the search site button above for Lialda and get my previous reply to KWAA if you would like to see if that info applies to what happened to you as well as doing Canasa and see what posts come up for that drug...
You may be surprised at the info I quoted from the Lialda drug packaging stating that it is difficult to distinguish a reaction from an exaserbation...While they admit 3% (likely more) of patients during clinical trials were affected as well as the fact that they don't really know how it works...I can't recall the exact words but to read more see the thread I spoke of above...I just replied moments ago on the Crohn's board...Hope that helps...
Peace~MamaDove