Charcoal tablets have always worked for me (not the time-release ones, though), they seem to go through the body picking up all the nasty stuff, poo will come out black BTW so don't panic. Rice cooked with dodgy water is a particular nasty in the tropics (the locals can't see the problem with water collected off an asbestos roof!) rather than salad, which I have not had a problem with.

Anything here guaranteed to give you the shits? For me I found it was KFC sauce. Maybe it would have done elsewhere but it was here I first had it.

It was KFC that gave me a couple of nights in hospital during one of my early trips. I've just done a 10 month stint in he Philippines and think the heat can loosen you up occasionally, I think you must sweat internally.

But what is your main source of drinking water?

Hi, had a bad stomach last week,and have had them before here,ive been here 18 months now,i always take Apple Cider Vinegar in a glass of water does the trick for me.