I posted an answer before, but it does
n't look like
it made it. Maybe I wasn't logged in. Anyway, look
for "probiotics" by UDE. These worked for me. The specific type was for "advanced adults". You should be able to find it in health food stores, or else call around and see who might have it. These are pricey ($35), and others willl like
ly work, but why mess with a good thing until you are feeling better. Good luck.