Your doctor is right in not wanting to leave you on steroids for an extended period. They can have very bad side effects, and are not recommended for long-term therapy. Plus, after a time they become less effective.
Have you tried Rowasa enemas? For many people, it helps to treat from both ends. The oral medications may not make it all the way to the sigmoid and rectum, and enemas can help in that area.
Other drugs that are frequently used are Colazal (instead of Asacol, works better for some) and Imuran. You may want to educate yourself about
the choices - look in the reference section here - and talk with your GI about
all of the options, pros and cons.
A good probiotic is a must for most of us, and others take various natural remedies. If you browse through this board you'll find a lot of discussion on this topic.
Persevere. Sometimes it just takes a while to find the right combination for your body.
Moderate to severe left-sided UC (21 cm) diagnosed 2001.
Asacol, Rowasa, Pentasa, Prednisone, Entocort, Azathioprine
Colazal, Remicade, Nature's Way Primadophilus Reuteri.
In remission since April, 2006. Remicade has been my wonder drug.