Organic Roasted Dandelion Root Tea Promotes Healthy Liver Function. Herbal Dietary Supplement. Dandelion root tea has shown choleretic effects which means that it can stimulate the liver to increase bile flow. Once bile is released by the liver its two main functions are to carry away waste and to break down fats during digestion. Dandelion's beneficial effects on liver and biliary tract function have been proven in pharmacological studies and have a long history of use in traditional European herbal medicine.