Folium Isatidis belongs to the cruciferous.It's a kind of traditional Chinese medicine.Folium Isatidis is mainly produced in Inner Mongolia, Shaanxi, Hebei, Shandong, Jiangsu, Zhejiang, Guizhou and other places. Indications: sore throat, sore mouth and tongue, sore, carbuncle, swelling and other diseases. In recent years, this medicine has been widely used in clinic. In addition to the above-mentioned diseases, it can also be used for phlegm heat depression and lung, expectoration yellow thick. It is especially
used for epidemic encephalitis B, which can clear away the heat toxin of Qi and camp points, and it can be used for various encephalitis B, and the partial heat type is more suitable.