Intestines' insides can be likened to a cave with thousands of fingers (or "villi") which stick up and down like stalagmites and stalactites. These villi are intended to be able to move freely, to move the food along during digestion; but in unclean intestines, they get "pasted down" with a muck that inhibits the absorption of nutrients through the epithelial cells. To protect itself from being poisoned by undigested putrefaction, the body continuously wraps this material in mucus, adding further to the buildup. The average American has 6 to 12 pounds of this material... further putrefying, breeding pathogens and creating a home for parasites. Colo2 Zone releases oxygen in the intestines and colon, for rapid and thorough (but gentle) cleansing -- creating a clean and healthful internal environment, and enhancing nutrient uptake. It operates in a safe and healthy manner, by cleaning the organs of elimination first. Colo2 Zone's oxygen comes a proprietary blend of magnesium oxides, which are specially treated by a "molecule cracking" process developed by NASA to obtain maximum oxygen release from solid state fuels. A teaspoon can deliver 7 1/2 liters of oxygen, readily bioavailable to the stomach (which is 40% more efficient at assimilating oxygen than the lungs are). It also helps to oxidize the undigested putrefaction impacting the intestines and colon. Additional oxygen in the intestines and colon provides an aerobic environment -- helping beneficial flora flourish.