I was diagnosed with IBS and went on the fodmap diet. My gall bladder had been removed so I had to limit fat in my diet. My local gastroenterologist could not really help me so I went to Cleveland clinic, quite far away. The 3rd gastroenterologist I saw there solved my problem. My pancreas was not working very well. He gave me Zenpap which is an enzyme which I take 3 times per day, with each meal, and my diarrhea is gone.