actually you do have a point. while it is true that caprylic acid in itself will NOT kill friendly bacteria, taken in the combination with psyllium and Bentonite as remi was doing, it will. i have taken the exact same concoction before.
most concentrated supplements used to kill off candida in large amounts, over time become hard for the body to break down, thereby stressing the liver. for short cleanses it can be ok. after doing it once its not a method i would use again, and i would definetely suggest a strong round of the probiotics afterwards.