Cephalexin
"I started taking Cephalexin to prevent any bacterial infection before it got to any parts of my body. 500mg 4xday, 10 days. The underside of my right breast split and it was a mean-looking gash. Have no idea why it happened as I've never had any issues at all wearing my bras. And no. No underwires and have had them for years, again, without any issues. :) Doc took a culture and viola! I'm on pills that come out of a bottle that smells like someone trapped a fart in it. I ended up with diarrhea, at least 3 times a day and today, I am trying out a pro-biotic to see if that will help in any way. Good luck to the newly prescribed. Different for everyone. :)"