North St. grass leaves used to treat asthma. North St. grass treatment of bronchial congestion, asthma and hay fever effect. The main function: antitussive. Quchu accumulation of phlegm. Relieve congestion symptoms caused by allergies. ERIODICTYOL aka eriodictyol, from Rutaceae lemon fruit. Light yellow crystalline powder, which has a strong antioxidant effect. ERIODICTYOL (7-O-glucoside) Labiatae exist with naringenin -7-O-glucoside (Labiatae) Dracocephalum (Dracocephalum) plants, these Dracocephalum temperate plants mainly in Asia, mostly in mountains and semi-arid regions, a few extended Central and Northern Europe, one kind of distribution in North America. China has about 32 kinds of seven variants, located in the northeast, north, northwest and southwest. The genus is widely used in the private sector, especially in the Xinjiang Uygur Autonomous Region various species are used as therapeutic drugs bronchitis and cardiovascular disease.