Cholestyramine
"Post Cholysystectomy Syndrome: This medicine had been the best thing I have ever had. Regardless of the minor side effects I had it has saved me from constant diarrhea after having my gall bladder removed. I spent 8 miserable months having diarrhea multiple times a day. This has stopped it completely with little to no side effects. It does make me feel full if I take it right before I eat."