It's important to use psyllium with the bentonite. This forms a gel that carries the antifungal through your digestive tract. I've been using the Caprol, Bentonite, Psyllium and I think its the best thing I've used so far. I don't have all of the answers of how it works, but you can find out about it at the Whole Approach web site. They have a forum with a moderator and will answer your questions better than I can.
If you try the Caprol, bentonite, psyllium mixture, start with only a small amount. I got some pretty bad die off because i started with too much. Maybe start with about half of what their instructions tell you. it works! I've been fighting this thing for years and this is the first thing that really helped me.