This sounds a lot like the program on www.wholeapproach.com. For better results, add liquid caprylic acid to your shake. It's called Caprol. They also recommend that you are careful to find psyllium that has husks and seeds in it for the best cleansing and to not purchase psyllium with all kinds of other additives in it. sonne's psyllium actually has some soy flour in it and if you are allergic to soy it can cause problems. You can read more about it on that site and they also have a nutritional consultant on their forum answering questions about diet and products.
That forum is at www.wholeapproachforums.com.
I hope this helps you.