Googled it and got this.. A hepatologist is the most experienced and qualified type of doctor to treat people with liver disease. Since there is currently no separate board certification examination in the field of hepatology, there is no official definition of a hepatologist.
Isatis tinctoria, with Woad (; or glastum) as the common name, is a flowering plant in the family Brassicaceae. It is commonly called dyer's woad, and sometimes incorrectly listed as Isatis indigotica (a newer and invalid name for the same plant).
Latin: Isatis tinctoria, Isatis indigotica. Chinese: Ban lan gen (root) Da qing ye (leaves). WHAT IT DOES: Isatis root and leaf are bitter in taste and cold in action. They reduce fever and heat, cool the blood and throat, and reduce activity of virulent virus' and microbes.