dahk, With you being a functional medicine coach, I take it that you want to go the natural route. I truly respect that. I know that what you have is much worse than my issue, but, maybe something I hit upon with you will help. I tried everything natural for IBS-C (IBS constipation) and nothing worked. Fodmap diet, eating clean (actually made it worse!), gluten free (no change), can't do much natural fiber such as Psyllium & flaxseed, drinking more water, moving more, Kefir, very good probiotics, prune juice, Miralax (trial & error with dosage) etc., Iceberg lettuce is one of my worst culbrits and the preservatives added to salad bars cause severe cramping. Only occasionally do I need to take Milk of Magnesia. I went on Linzess 72 mcg for IBS-C several years and it is the best thing I ever did! I take Bentyl for IBS for colon spasms...works wonders. I realize this is not what you have been diagnosed with, but, just some thoughts. I empathize. It's miserable. Go figure, but sometimes eating occasional junk from a fastfood restaurant helps! I truly wonder if there is a genetic connection as my mom & sister have IBS-C as well. I'm hopeful you will get better and find what works for you. Bless you!