While you're waiting to hear of
Pets,ca experiences,
this page might interest you (and within it is a link to the
"antibiotics" section of that site where there is a little more info)....as well, the owner of that site also runs an online practical support group with a very large membership...the link to that group can be found at the bottom of the site's homepage. (As a member of that group, I see periodic discussion of and recommendations for the use of probiotics - there are some 200 references in the group's message archives. Perhaps you'd consider joining and posing your question there...)