The intestinal tract contains trillions of bacteria that, in a healthy animal, coexist in a beneficial, symbiotic relationship. They help digest food, produce vitamins, regulate the metabolism, and control a normal immune response. Probiotic bacteria promote a healthy intestinal environment by producing lactic acid and by secreting fatty acids that are helpful to the growth of other beneficial microorganisms.

Lactobacillus sporogenes is a lactic acid-producing bacteria that represents a breakthrough in probiotic supplementation. This beneficial bacteria is dormant in the bottle, then reverts to a growing bacteria in the intestines. Because of this, it resists being killed by stomach acid; in contrast, many Lactobacillus probiotics lose most or all of their potency before use and do not survive their trip through the stomach.