Oral drugs vs supositories for UC?

I'm age 50 male with UC diagnosed abt three years ago.

I'm currently using only Canasa suppositories..... one
at night before bed.  fairly good results but nor
perfect...still have problems.

I saw an add on TV last night for 30 day supply of oral
drug Lialda....so I signed up for it and go the coupon

Now I just have to get the doc to make a scrip for me
for it.

I'm curious what people think abt oral ASA vs
suppository style ASA and if its worth me giving the
oral meds a try?

see link

http://www.lialda.com/aboutLialda/aboutLialda.asp