Florastor is "prescribed" in Europe when Antibiotics are prescribed in order to prevent the diarrhea like you are experiencing. Check this website to see if there is anywhere near you that you can get it or if you can locate the same natural organism...probably in a health food store or apothecary. It works differently than probiotics like acidopholis and is very effective for diarrhea related to many sources. I have seen it reverse severe traveler's and antibiotic-related diarrhea very quickly.