Unfortunately Polishdan, sometimes it isn't that simple. If, like me, you are left with short bowel syndrome and high output then only option is to take drugs to slow it all down. Even when CD is in remission I can empty up to 15 times a day, when flared then it was up to 30 times a day. With the immodium and codeine that goes down to 8 times a day, still a lot more than most people but that is good for me. It also means that I get to absorb more nutition and calories from the food I eat.
I never used to able to get immodium to work until I started taking it on a regular basis and now it works brilliantly. Seems if I take it occasionally then it doesn't work.