Motofen. I've tried immodium, lomotil, elavil, bentyl, questran, nulev and many others. I've had about 25 years of IBS. Nothing has worked as well for me as Motofen. Even Wikipedia (on the internet) notes how well it works in controlling IBS. It notes that Motofen is better than either lomotil or immodium. If this can help anyone else like it has helped me, that will make me happy.