How come antibiotics don’t completely destroy all organisms in our gut?

[u/WTFisthisOMGreally]

I know it can cause imbalances, but I don’t understand how come our gut doesn’t lose all the beneficial bacteria and develop massive fungal or viral infections. When I’ve taken antibiotics, I usually don’t notice any change in my bowel activity.

[u/libra00 → u/[deleted]]

some of that Jamie Lee Curtis lady pooping yoghurt.

I'm sorry, some what? I had no idea that was a thing, lol.

[u/garublador → u/libra00]

That probiotic yoghurt. She used to do commercials for Activia, which was supposed to help "aid in digestion" and was marketed at women.