Immodium is OK once in a while. Regular use should only be under supervision of a doc because believe it or not it's a narcotic. Not the kind that gets you high though (sorry) it's a narcotic that only affects the bowels. So while it's not very addictive to your brain (only slightly) it is addictive to your guts and when you discontinue you will have the worst case of the runs you ever had for a week or more. As long as you don't take it regularly your guts won't get hooked and you'll be fine. Also I've noticed that the smaller the dose the better with that stuff. A half a pill does the job for three or four days, a whole one gives me constipation.