From the Mate Factor Caffeine Free USDA Herbal Tea Certified by: QCS Prebiotics are food ingredients which promote the growth of beneficial bacteria in the gastrointestinal system. Our bodies use inulin which increases the volume of good bacteria in the intestinal system by up to 10 times! Inulin is a natural fiber found in green plants such as Burdock & Chicory, which acts as a food for good bacteria in the gastrointestinal tract. We have combined these with powerful digestive herbs such as Ginger, Fennel, Coriander, Cardamom & soothing Peppermint. Our smooth digestive tea is safe to use after every meal.