MetronidazoleAntitrichomonal AgentsAnti-Bacterial AgentsNitroreductasesMicrobial Sensitivity TestsAmoxicillinHelicobacter pyloriClarithromycinAnti-Infective AgentsDrug Resistance, MicrobialAntibiotic ProphylaxisBacteria, AnaerobicDrug Resistance, BacterialHelicobacter InfectionsBismuthTetracyclineNitroimidazolesClindamycinTrichomonas vaginalisTinidazoleBacteroides fragilisTrichomonas VaginitisEnterocolitis, PseudomembranousAnti-Ulcer AgentsBacteroides InfectionsClostridium difficileDrug Therapy, CombinationOmeprazoleVaginosis, BacterialOrnidazoleBacterial InfectionsPenicillinsAntiprotozoal AgentsTritrichomonasNimorazoleAmebicidesFurazolidoneNitrofuransBacteroidesBacteriaRosaceaAminoglycosidesGardnerella vaginalisVancomycinStreptomycesRanitidineCiprofloxacinAntibiotics, AntineoplasticBacteria, AerobicGiardia lambliaSurgical Wound InfectionDrug Resistance, Multiple, BacterialPyruvate SynthaseTrichomonasPremedicationGentamicinsSuppositoriesErythromycinCefoxitinbeta-LactamsPeptostreptococcusAdministration, OralGiardiasisPenicillin GDuodenal UlcerDrug UtilizationAmpicillinAnaerobiosisTreatment OutcomeNiridazoleBacterial ProteinsGram-Positive Bacteria2-PyridinylmethylsulfinylbenzimidazolesEntamoeba histolyticaPeptic UlcerOrganometallic CompoundsEscherichia coliDrug ResistanceClostridium InfectionsChloramphenicolNifuratelOfloxacinFermentationLactamsRibotypingCephalosporinsTrichomonas InfectionsDNA, BacterialNitrofurantoinAzithromycinFusobacterium InfectionsLevofloxacinAntacidsBlastocystis hominisFusobacteriumThienamycinsParomomycinProspective StudiesColony Count, MicrobialDyspepsia