St John's wort for clover families forsythia fruit processing plant extract, its mainly contain forsythia glycosides, forsythia ester glucoside, oleanolic acid, etc., have antibacterial effect, can, paratyphoid salmonella typhi bacilli, escherichia coli, shigella, diphtheria bacillus, staphylococcus aureus, streptococcus and vibrio cholerae etc Chemicalbook, have a strong heart, diuresis, town spit pharmacological effects, such as st John's wort is commonly used in treatment of acute wind hot cold, carbuncle swollen chuangdu, lymph node tuberculosis, urinary tract infections, such as disease, for ShuangHuangLian oral liquid, ShuangHuangLian powder injection, qingrejiedu oral liquid, even the grass antipyretic oral liquid, fructus forsythiae jiedu granule of Chinese native medicine preparation such as the main raw material.