Native Americans used dandelion a great deal, both as food and medicine. It was considered effective for anemia, digestive disturbances, constipation, back pain, inflamed eyes, edema, kidney disease, heartburn, and as a blood cleanser. Dandelion leaves contain large amounts of natural potassium and increase urination, thus getting toxins out of your system. Dandelion root, on the other hand, has a stimulating effect on liver and gallbladder function, and has been used to strengthen the liver after long periods of medication or alcohol use. Added bonus: it stimulates your immune system and is great for your skin.