If you catch a bug in your guts while away from home, the best med I've ever found is Flagyll. I had giaridiasis once, and that is what they gave me. Cleared it right up in three days. Only trouble is it kills everything in your system, so you need to eat some yogurt, or sour cream, or sourdough, or some other local culture to really get back to "normal". <img src="/images/graemlins/shocked.gif" alt="" />