I saw a commercial for
/www.xifaxan.com recently.
We had a discussion about
this the other day. It is an antibiotic that has been around for quite a while but they recently started marketing it as a drug for IBS-D (not IBD). I tried it for my IBD and didn't have much result but it didn't seem to harm anything.
I wonder if that is what you saw. I can't think of any other antibiotic that has a commercial geared toward GI issues at the moment.