Pueraria root is a herb used to relieve exterior syndromes; it is the dried root of Pueraria lobata (Willd.) Ohwi, a plant of the genus Pueraria in the legume family. It is primarily produced in Henan, Hunan, Zhejiang, and Sichuan. It has the effects of relieving muscle tension and reducing fever, promoting fluid production and quenching thirst, promoting the eruption of rashes, raising yang energy to stop diarrhea, unblocking meridians and activating collaterals, and alleviating alcohol toxicity.It is primarily used to treat fever and headache caused by external pathogens, stiffness and pain in the neck and back, thirst, diabetes insipidus, measles that fail to erupt, febrile dysentery, diarrhea, dizziness and headache, hemiplegia due to stroke, chest pain caused by heart obstruction, and alcohol poisoning affecting the middle burner.