TCM: Listed under ‘Herbs that clear Heat’, in ‘Herbs that clear Heat and resolve Toxicity’, bitter, cold Isatis tinctoria root (ban lan gen) enters the Heart, Lung and Stomach channels. iIt clears Heat and Toxins,cools the Blood and benefits the throat.eg mumps.
General: It treats fever due to Warm diseases, common cold due to Wind Heat, sore throat, meningitis, encephalitis B, pneumonia, parotitis.