my GI ordered a MRI of my abdomen and pelvis, small bowel series and a capsule endoscopy. Those all came back normal with the exception of a ulcer in the illeum section of my small intestine. I didn't show pancreatitis, so that was ruled out as a cause for EPI, and I didn't have Crohns or CF. Check out table 4 in this article which lists the different causes of EPI http://www.ncbi.nlm....2/#!po=0.925926
I had all these tests done, and when everything came back pretty much normal, my GI decided my EPI was all related to celiac. I hope this gives you some other ideas!
Are you taking your ZenPep with your food and not before or after? I know Creon works best when taken with your meal.
Thank you for the response and the suggestions. I am actually taking 500 mg of Magnesium a day right now, and have been for months. I think the muscle weakness is maybe some other electrolyte, like potassium or calcium. Either way, I still seem to be very easily fatigued, the degree of which varies based on how much or how fatty my BMs are... Sometimes I wonder if I may need to be taking more zenpep, but then I hear of people like you that seem to get better on a much lower dosage! I guess not all cases are the same, but I wish mine would come along a little faster... Can I ask what sort of tests your doctor did to rule out that your EPI wasn't celiac related? My gastro hasn't ordered anything to do so, but I may need to ask him about that.