Pure Herbs herbal extracts used historically to support the Digestive System, whose organs include the mouth, esophagus, stomach, liver, gallbladder, pancreas, the small and large intestines and the rectum, allows the body to break down and absorb food, and remove waste. The Digestive System is the food processing system of the human body. It includes the mouth (teeth, tongue and salivary glands), esophagus, stomach, liver, gallbladder, pancreas, small and large intestines and the rectum. Together, these organs convert food into essential nutrients that are absorbed into the body and eliminated as unused waste material.