I learned about it in a small post on the Bowel Clense forum. I noticed a few new posts about it on there, as well, so check them out. I did have trouble, like I said with the PB shakes, and although it's not my favorite thing to do because it's a bit gritty, I can just keep gulping and get the stuff down with less water and preperation then the PB shakes. Just a glass, spoon, lemon and water, and I can actually do it at work without my co-workers looking at me funny anymore. I found the Homozon generally online, and read all over about it, but the Bowel Cleanse Forum was the most informative of all websites on the net. Good luck and let us know how it goes.
I was a skeptic about oxygen therapy, but I figured, what the heck. The product is a bit expensive, but it lasts a while. Good luck!