CimetidineHypersensitivity, DelayedDrug HypersensitivityHistamine H2 AntagonistsGuanidinesHypersensitivityRanitidineFamotidineAlveolitis, Extrinsic AllergicDuodenal UlcerReceptors, Histamine H2Dermatitis, ContactDimapritHistamineDentin SensitivitySkin TestsHypersensitivity, ImmediateGastric AcidReceptors, HistamineDiphenhydramineHistamine H1 AntagonistsPyrilamineAnti-Ulcer AgentsDinitrofluorobenzeneHistamine AntagonistsMagnesium HydroxideStomach UlcerDrug InteractionsHyperalgesiaAntacidsReceptors, Histamine H1Organic Cation Transport ProteinsPicryl ChlorideHistamine AgonistsImpromidineAluminum HydroxideGastric Acidity DeterminationGastric JuiceAnaphylaxisDermatitis, Allergic ContactOxazoloneChlorpheniramineFood HypersensitivityImmunity, CellularDentin Desensitizing AgentsGuinea PigsHaptensCell Migration InhibitionMetiamidePentagastrinPain ThresholdSkinAdministration, OralFurans