I've been struggling for over four years with collagenous colitis and still have not found resolve. I tried an elimination diet about a year ago for about 4 months and saw minimial improvement in symptoms and no improvement with the trips to the bathroom. I did not cheat and am very aware of all the hidden sources of gluten. This particular "diet" I eliminated all processed foods, and anthing with dairy, wheat, and yeast. How long did it take for you to notice that it helped? I am regretfully back on prednisone for the MC but have terrible eye burning and puffy feeling around my eyes along with dull stomach aches which I keep wondering if it's related to gluten sensitivity. I thought I would have noticed something within four months, now I'm begining to wonder if maybe I didn't stick with it long enough. I've been tested several times for celiac and it all comes back negative.