I have been on Asacol since Jan 09. In May while 5 mos pregnant I became very anemic and had a blood transfusion and put on Prednisone. Since thenmy doctor has tried weining me off the Prednisone, however they symptoms flare every time i get down to 20 mg. I am going to start Mercaptopurine tomorrow while continuing the Prednisone for 3 mos while I decrease off the dosage. Has anyone tried similar med's and what results did you have?