Production RegionsPrimarily produced in Chinese provinces of Shandong, Shanxi, Hebei.
Macroscopic FeaturesRhizome is cylindrical, curved, with branches, up to 50cm long, 0.3~0.8cm diameter. Externally yellowish-brown to dark brown, with many curved thin roots, outer skin easily flakes off. Pliable texture difficult to break, uneven fractured surface, fibrous; yellow woody portion, radial arrangement and pith in the center. faint odor; taste bitter.
Quality RequirementsSuperior medicinal material is thick and strong; bitter taste.
PropertiesBitter; cold, slightly toxic.
FunctionsClears heat, resolves toxin, dispels swollen, promotes throat. Apply to pent-up heat toxin, swelling pain of throat, swollen and pain of tooth and gums.
OriginThe dried rhizome of Menispermum dauricum DC. (Menispermaceae).