Receptors, Histamine H3Receptors, Histamine H1HistamineReceptors, Histamine H2SequoiaHistamine AgonistsHistamine H2 AntagonistsReceptors, HistamineHistamine AntagonistsHistamine H3 AntagonistsHistamine ReleaseMethylhistaminesChlorpheniramineDimapritCimetidineMetiamideThioureaImpromidineDiphenhydramineFamotidineHistamine N-MethyltransferaseHistamine AgentsRanitidinePyrilaminePiperidinesGuinea PigsBurimamideHistidine DecarboxylaseDose-Response Relationship, DrugHistamine H1 Antagonists, Non-SedatingDoxepinGastric AcidIsothiuroniumTripelennamineRadioligand Assayp-Methoxy-N-methylphenethylamineReceptors, G-Protein-CoupledTerfenadineMast CellsHormone AntagonistsRats, WistarRats, Sprague-DawleyTriprolidineCells, CulturedImidazolesGastric MucosaKetotifenGastric JuiceDopamine AntagonistsDibenzoxepinsNeurokinin-1 Receptor AntagonistsPentagastrinExcitatory Amino Acid AntagonistsBetahistineGuanidinesCyclic AMPPruritusNarcotic AntagonistsBinding, CompetitiveCetirizineSecretory RateMuscle, SmoothMuscarinic AntagonistsInterleukin 1 Receptor Antagonist ProteinTime FactorsGastrinsAnaphylaxisDibenzazepinesStomachIndolesCyproheptadineCalciumPyridinesStimulation, ChemicalDrug Inverse AgonismDrug InteractionsCell LineIleumNizatidineSerotoninSignal TransductionTracheaAstemizoleRNA, MessengerBasophilsGABA AntagonistsBodily SecretionsMuscle ContractionPurinergic P1 Receptor AntagonistsBenzazepinesPiperazinesDimethindeneDogsIntestinal SecretionsRats, Inbred StrainsAtropineMethacholine CompoundsIschnoceraCricetinaeBacterial Secretion Systems