Gynura segetum (Lour.) Merr. is characteristic medicinal herbs of Poyang Lake ecological economic region, and an important medicinal plant of many nationalities in china. A wide range of clinical applications for the treatment of various human ailments in folk, a survey of the literature shows Gynura segetum is mainly known for its haemostatic properties in the treatment wound. It has also been used extensively as a analgesic agent. Many pharmacological studies have demonstrated the ability of this species ...