Lansoprazole2-PyridinylmethylsulfinylbenzimidazolesSulfoxidesOmeprazoleAnti-Ulcer AgentsProton Pump InhibitorsBenzimidazolesEsomeprazoleGastric Acidity DeterminationGastric AcidDexlansoprazoleEsophagitis, PepticRabeprazoleGastroesophageal RefluxHeartburnClarithromycinEsophagitisFamotidineCross-Over StudiesNizatidineAmoxicillinHelicobacter pyloriRanitidineHelicobacter InfectionsAntacidsAryl Hydrocarbon HydroxylasesMetronidazolePeptic Ulcer HemorrhageDouble-Blind MethodDrug InteractionsProton PumpsTablets, Enteric-CoatedDuodenal UlcerHistamine H2 AntagonistsZollinger-Ellison SyndromeHydrogen-Ion ConcentrationDrug Therapy, CombinationEnzyme InhibitorsGefarnateSuspensionsArea Under CurveTabletsSilicic AcidAdministration, OralFormularies, HospitalPeptic UlcerEndoscopyTreatment OutcomeBreath TestsStomach DiseasesTinidazoleMagnesium HydroxideHemostasis, EndoscopicPenicillinsInfusions, IntravenousSingle-Blind MethodDrug Administration ScheduleMixed Function OxygenasesAnti-Bacterial AgentsGastric MucosaRecurrenceDyspepsiaColitis, CollagenousEructationDrug IncompatibilityStomach UlcerDose-Response Relationship, DrugProspective StudiesMetabolic Detoxication, Phase IGastrointestinal Diseases