i drink Tim Hortons' French Vanilla and get diarea. Why?!
There must be something in the mix that irritates your stomach. Why don't you try the coffee with a flavour shot instead. I think what Sally is trying to say is coffee is a natural diuretic, which cause you to urinate a lot, it has nothing to do with diarrhea.Are you bothered by just coffee? It affects some people like that and they are unable to drink it.
Coffee is a natural diarrhetic. It's a natural thing that happens, just something your body has to get used to!