Yellow Dock contains chlorophyll, vitamin A and C, oxalic acid, tannins, calcium, iron, magnesium, phosphorus, tonic and is very bitter. This natural herb originates from the root of a plant and sometimes considered an invasive and unwelcomed weed. It is a Blood purifier and general detoxifier; especially for the liver. Yellow Dock stimulates bile production, which helps digestion, particularly of fats. It will remove lingering waste from your intestinal tract; it also increases the frequency of urination to assist in toxin elimination. The Yellow Dock also has antioxidant and free radical scavenging activities and it reduces oxidative stress. Not only is it used for as a blood r; it is also used as a lymph cleanser and helps with digestive aid, alleviate stomach acid, heartburn and indigestion. It can aid the liver, gallbladder and relieve constipation. It helps with iron deficiency anemia, bacterial infections, STD, menstrual and heavy bleeding and jaundice. Use: Teas (suck or eat a key lime after each drink to calm the bitterness) We have found that is the only thing that works for this powerful herb.