chinese name: lianqiao botanial name: forsythia suspensa english name: fructus forsythiae [origin habitat ]: henan , shanxi [chemical composition ]: betulinic acid , ursolic acid , oleanolic acid , arctigenin , arctiin , matairesinol , matairensinoside , phillygenol , p hillyrin , forsythol , volatile oil , grenn forsythia conclude 4.89% saponin , 0.2% alkaloids . [p harmacological action ]: 1. to resist bacteria . 2. to relief hot . 3. to resist emetic caused by rejecting digitalis into pigeon vein , its anti-emetic function is similar to rejecting chlorpromazine two hours late .