Once I drunk undiluted vineagar and goddamn my throat still hurts from it. I haven't learned my lesson from it 2 years ago, but I'm starting to realize it now... I'm weaning myself over acidic things like coffee (I switched to cold brew) and it's hell
I will share this again: I had a phase in middle school where I would have one buldak every afterschool with my two friends. We had to stop because one of us got stomach ulcer.
I now see that you are the same person that I left this very same comment!! Stop before stomach cancer stops you!