Isatis indigotica Fort. (indigowood) is a medicinal plant belonging to the Brassicaceae family. Its root is a commonly used Chinese herb to remove toxic heat, to reduce heat in blood, and to relieve convulsions. According to modern medical research, the major components of radix of Isatis indigotica Fort. include indirubin, indigotone, and indigo pigment contents, with antivirus, fever detoxification, and anti-inflammatory efficacy. Indigowood root has been evaluated in mucositis.