Eight adult-specific bacteria at an appropriate strength designed specifically to reflect healthy adult microflora. Probiotics are the beneficial friendly bacteria that occur throughout the digestive tract. They are absolutely essential for proper Digestion, strong immune function, and overall health. New research is establishing how important the supplementation of probiotics can be for a variety of degenerative conditions. An adults healthy microflora will closely resemble that of a child but due to their large size, an adult needs much greater quantities of the same bacteria.