I had a colonoscopy a few years back before paleo, I am supposed to get another one as a follow-up soon. Since paleo all of my IBS symptoms are gone as well as the GERD. I now eat pretty clean and take kombucha and water kefir daily. As part of the prep for a colonosccopy you are supposed to basically empty the bowels by fasting then taking pico-salax or some type of magnesium solution. My question is about the mag flush. Will I lose the good gut flora that I have been trying build up? I'm not worried about the fasting part as I already do a 16/8 fast now.