My sister has been taking antibiotics recently for a sinus infection, and tells of a strange, amoxicillin-induced kind of diarrhea that has her pooping five or six times in rapid succession. She told me that, during one of these episodes, she thought she saw the white antibiotic pill she had just swallowed a few minutes before, and she wanted to know if this was possible. I told her I didn't know, but that I'd ask Poop Report.