P&B stands for Psillium husk and Bentonite clay. A very effective bowel cleanse, used to get out the stuff that has been in your bowel for years. People have passed pennies and marbles that they swallowed as children. Not to mention that the Bentonite will grab everything with a negative charge, like candida, dead parasites, heavy metals - it's brilliant stuff. See Bowel Cleanse Forum .