The function and effect of Qianhu extract: Qianhu extract contains geniflorin, genistein, genistein, inulin, 3'-isovalerol-4'-0-angianyl-3 ', 4'-dihydropricklyash . It has the functions of disseminating wind and heat, lowering qi and eliminating phlegm. Treatment of wind-heat headache, phlegm-heat coughing, vomiting, chest tightness.