I use Imodium, and it works for me, but I don't recommend every day use, as you then can become constipated which can be worse than diarrhea ! I find that if I take a full dose (4 tablets) one day, I'm good for two or three days afterwards. Then I dose myself again. If I'm going somewhere where a good clean bathroom is not readily available, I take a dose or two before I leave to make sure I won't have any surprise attacks.