Jen....when did you start the Imuran? When I started the 6MP, about eight years ago (stopped working and am now off it), I remember it took three months to kick in along with prednisone. I was only on 50 mgm.
That was a LONG time on 60 mgm of prednisone and a pretty quick taper. My doctor usually places me at 40 mgm for one week with a 5 mgm per week taper. He also took me off the 6MP two weeks to starting Remicade back in November. He didn't want me on two immunosuppressants, too risky for cancer.
I remember getting some upper gastric distress last summer while on prednisone and the doctor prescribed Nexium for as long as I took the prednisone. I only used it a few times since, never on a steady basis. Also...please take Calcium with D, very important so you don't develop osteoporosis like I did.