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Erythromycin(EM),amacrolideantibiotic,is widelyusedintreatingmanyinfectiousdiseases.Administrationofthisdrugeitherorallyorintrave nouslyiscapableofcausinggastrointestinalside effects,suchasnausea,vomiting.Ithasbeenrepor tedrecentlythatEMhadstimulatoryfunc