Liquorice (liquiritigenin), also known as glycyrrhizin, is found in legumes licorice flavonoids monomer (GlycyrrhizauralensisFisch) in the second hydrogen compounds, made from licorice extract, belongs to the natural sweeteners. Glycyrrhizin has spasmolysis, anti - ulcer, anti - bacteria and inhibition of monoamine oxidase in liver cells. Physical and chemical properties Colorless long needle crystal, soluble in meth/anol. Used for content determination/identification/pharmacological experiment, etc. Pharmacological effect: spasmolysis, anti - ulcer, anti - bacteria. Can inhibit the monoamine oxidase, thereby treating depressive psychosis.