My husband has microscopic colitis and was prescribed budesonide which helped only slightly and was very expensive, even with insurance. I did a LOT of research and found this information: https://www.hopkinsmedicine.org/gastroenterology_hepatology/_pdfs/small_large_intestine/collagenous_lymphocytic_colitis.pdf and figured it was worth a try. It's essentially 8 weeks of 2 Pepto Bismol chewables 4 times per day. A lot cheaper than the steroid, and only the black tongue and stools as side effects. I highly recommend trying it. His gastro had no problem with this protocol, but I was kind of annoyed that he didn't suggest it as the first line of treatment.