MetronidazoleNimorazoleNitroimidazolesTrichomonas VaginitisRadiation-Sensitizing AgentsAntitrichomonal AgentsNitroreductasesHelicobacter pyloriAmoxicillinAnti-Bacterial AgentsClarithromycinBismuthHelicobacter InfectionsTrichomonas vaginalisBacteria, AnaerobicTinidazoleAnti-Infective AgentsBacteroides fragilisAnti-Ulcer AgentsClindamycinBacteroides InfectionsOmeprazoleEnterocolitis, PseudomembranousVaginosis, BacterialOrnidazoleMicrobial Sensitivity TestsTetracyclineClostridium difficileAntiprotozoal AgentsDrug Therapy, CombinationTritrichomonasDrug Resistance, MicrobialAmebicidesNitrofuransFurazolidoneRosaceaBacteroidesGardnerella vaginalisDrug Resistance, BacterialRanitidineGiardia lambliaPyruvate SynthaseSuppositoriesTrichomonasBacteria, AerobicGiardiasisPeptostreptococcusDuodenal UlcerNiridazoleEntamoeba histolyticaPenicillinsPeptic UlcerOrganometallic Compounds2-PyridinylmethylsulfinylbenzimidazolesAnaerobiosisNifuratelPremedicationTrichomonas InfectionsAdministration, OralBlastocystis hominisCefoxitin