Sounds like we're in similar boats.....
I had to hound my consultant to let me try rectal meds. Firstly he gave me the predfoam a long time ago, but that stuff is a nightmare to keep in!
Eventually, he let me try Pentasa suppositories. Despite the oral pred being less and less effective each flare, and the Asacol, in my opinion, doing absolutely nothing for me. The best result I have had for a long time came after using the suppositories, but it did take about 14-20 days for significant improvement.
Stick with it - they'll kick in soon. I'm also just trying VSL#3. Been on it for about 10 days now, along with JarroDophillus E/C coated capsules. noticed some die off, but I do genuinely think they are doing some good in there - i'll let you know!
Diagnosed with UC March 2007 - Proctitis
Asacol 3 Tabs (400) x 3 Daily
Prednisolone 20mg AGAIN Daily
Iron Supplement 200mg 1 Daily
Omeprazole 20mg (Acid)
Azathioprine 125mg Daily
Pentasa 1mg Suppository Daily
Various Asthma Medications (List too long)
Calcium supplements 400mg twice daily
Multivitamins + Minerals once daily