SucralfateRanitidineIntestinal AbsorptionGymnemaHibiscusBiological AvailabilityAdministration, OralHistamine H2 AntagonistsAbsorptionDietAnti-Ulcer AgentsCimetidineBismuthFamotidineStomach UlcerDuodenal UlcerAntacidsOmeprazoleGastric AcidFuransMagnesium HydroxideGastric Acidity DeterminationAluminum HydroxideGastric MucosaDrug InteractionsSkin CreamHeartburnCisaprideDouble-Blind MethodPeptic UlcerGastric JuiceAluminumEcthyma, ContagiousHydrogen-Ion ConcentrationReceptors, Histamine H2Helicobacter pyloriLansoprazoleGastrointestinal HemorrhageEsophageal DiseasesCross-Over Studies