I really can't help you but to tell you about
my experience. When I first started 6-MP my doctor slowly upped my dose. When I got to the top dose I started developing mouth sores. Got so bad that I couldn't eat or drink anything other than ice water in slow sips. I would wake up with my lips glued shut because of the oozing. After trying several medications with no relief I ended up in the ER. Turns out I had bone-marrow suppression. Just make sure your doctor keeps an eye on things.
Vicky / 48 years old
DX'd with Crohn's during a resection August 2006
DX'd with Steriod induced Diabetes November 2006
Considered in Clinical remission but have minor signs of disease activity
Daughter (27) also has Crohn's since she was 12.
Currently on 4000mg of Pentasa only for Crohn's
No longer able to take 6-MP because of Bone-Marrow Suppression
Cymbalta, Metformin, Lipitor