Prunella , a perennial herb in the Labiatae family, is widely distributed throughout China, with Henan, Anhui, Jiangsu, Hunan and other provinces as the main producing areas. Prunella vulgaris mainly contains triterpenes and their glycosides, sterols and their glycosides, flavonoids, coumarins, phenylpropanoid, organic acids, volatile oils, and sugars.