What Annelise said, is what two GIs have told me. If you go off of immunosuppressants, you will more than likely flare very badly and it will be harder to get under control. I went off of 6MP for 3 months and I didn't really get worse but I wasn't getting better either. I just started taking it again last night.
Female, Age 38
Diagnosed w/c.diff 7/02 when pregnant w/1st and only child during 2nd trimester(wasn't on antibiotics)
C.diff flare within weeks of delivering baby 1/03, Diagnosed with UC 2/03
LDN - 2/17/09 1.5 mg., increased to 3 mg. 3/3/09
Acidophillus, Sacchromyces Boulardii, Oil of Oregano