One of the more, dare I say it, "anal" posts I've seen.
Regarding the OP's original question, let me put it this way:
Eat fruit you peel yourself.
Eat hot meals, not warmed over stuff.
Drink bottled water and beer. Mixed drinks can be risky if they have ice (rum and Coke) ..
Lime juice is good for you. So is vinagar.
IF you should get a case of the trots: (1) Pepto Bismol; (2) Lots of liquids--bottled water with Gatoraide? and (3) DO NOT take anti biotics unless you are under a U.S. doctor's care....
The body takes care of itself. In the wonderful book "Where there are no doctors" the indications are to re-hydrate: with Gatoraide or boiled water + a few teaspoonfuls of sugar and two of salt; Eat well, with properly cooked food; avoid any soft drinks, raw fruits, beans, spicy foods, laxitives and alcohol.
If you need more advice on this, send me a PM...
HB
Regarding antidiarreah medicine: Stay away from stuff that has "caolin"like Kaopectate, since this hardens stools but does not combat the dehydration.
Also stay away from diphenoxilate (Lomotil) since that might make the infection last longer....and no antibiotics!! there are other things not to use..