I've always been leery of taking antibiotics that just wipe my gut clean of bacteria. I have to wonder if the right stuff will re-colonize or not. How would I k

I've always been leery of taking antibiotics that just wipe my gut clean of bacteria. I have to wonder if the right stuff will re-colonize or not. How would I know? Until I was ill. This kind of this is called 'iatrogenic' if I remember right - a disease caused by the doctor.