FamotidineRanitidineReceptors, Histamine H3Receptors, Histamine H1HistamineHistamine H2 AntagonistsReceptors, Histamine H2Histamine H1 AntagonistsHistamine AgonistsHistamine AntagonistsReceptors, HistamineHistamine H3 AntagonistsCimetidineMethylhistaminesHistamine ReleaseDimapritChlorpheniramineAnti-Ulcer AgentsGastric AcidGastric Acidity DeterminationMetiamideThioureaPiperidinesImpromidinePyrilamineDiphenhydramineDose-Response Relationship, DrugBismuthGuinea PigsOmeprazoleInterleukin 1 Receptor Antagonist ProteinDuodenal UlcerHistamine N-MethyltransferaseNizatidineHistamine AgentsStomach UlcerBurimamideNeurokinin-1 Receptor AntagonistsHistidine DecarboxylaseHistamine H1 Antagonists, Non-SedatingGastric MucosaFuransDoxepinRats, Sprague-DawleyIsothiuroniumAntacidsDrug InteractionsRats, WistarRadioligand AssayTripelennamineImidazolesExcitatory Amino Acid AntagonistsPurinergic P1 Receptor AntagonistsDopamine AntagonistsHormone AntagonistsGastric JuiceReceptors, G-Protein-CoupledMagnesium HydroxideTerfenadinep-Methoxy-N-methylphenethylamineSucralfateGuanidinesStomachPentagastrinTriprolidineSerotonin 5-HT3 Receptor AntagonistsDouble-Blind MethodProton Pump Inhibitors2-PyridinylmethylsulfinylbenzimidazolesKetotifenMast CellsBethanechol CompoundsLansoprazoleNarcotic AntagonistsHeartburnAdenosine A2 Receptor AntagonistsAngiotensin Receptor AntagonistsPyridinesSerotonin 5-HT2 Receptor AntagonistsThiazolesMuscarinic AntagonistsTime FactorsDibenzoxepinsAdenosine A1 Receptor AntagonistsBinding, CompetitiveBenzazepinesPurinergic P2 Receptor AntagonistsGastrinsMuscle, SmoothIndolesPruritusBetahistinePheniramineGABA AntagonistsCetirizinePeptic UlcerAdministration, OralCross-Over StudiesReceptors, SerotoninSerotonin