That is interesting.  In my case, I was on two courses of antibiotics (a 7-day course and a 10-day course) during which I did not see improvement or use probiotics.<p>It&#x27;s only when I started the 30-day course that my doctor told me about probiotics.  I started the probiotics at the same time as the 30-day course and saw immediate improvement.<p>Perhaps my problems were caused by a lack of beneficial bacteria while your troubles were caused by some type of infection?  Or maybe it was only the 3rd antibiotic that cleared something out of my system?