Howdy ya'll. Mark here, long-time lurker - first time poster. I recently read on a travel tips website that Pepto Bismol is better for treating diarrhea than Immodium AD. Their reasoning was that Immodium AD stops everything up, trapping the bugs inside whereas PeptoBismol allows the bugs to flow out at a slow rate. Does anyone have any real-world experience to share one way or another?<br><br>Thanks.<br> -Mark<br>