I use "Anti-Diarrheal". I know it's an odd name, but that's exactly how it's labeled. Dollar General has cheap prices. The DG Health Anti-Diarrheal works for me. You take two tablets the first time you have to run to the bathroom, one tablet the second time, no more than 4 tablets in 24 hours. I usually only have to take two doses. I truly believe in it! I never leave home without it. I also keep PeptoBismol around. It doesn't cause drowsiness for me.