Receptors, Histamine H1Histamine AgonistsReceptors, Histamine H3HistamineReceptors, Histamine H2Receptors, HistamineHistamine AntagonistsHistamine H1 AntagonistsHistamine H2 AntagonistsMethylhistaminesPyrilamineHistamine ReleaseHistamine N-MethyltransferaseHistamine H3 AntagonistsReceptors, G-Protein-CoupledRadioligand AssayChlorpheniramineDimapritCimetidineLigandsMetiamideHistamine AgentsThioureaHistidine DecarboxylaseImidazolesDiphenhydramineImpromidineFamotidineGuinea PigsRanitidineBurimamideHistamine H1 Antagonists, Non-SedatingPiperidinesp-Methoxy-N-methylphenethylamineDoxepinDose-Response Relationship, DrugMast CellsIsothiuroniumTripelennamineTriprolidineTerfenadineGastric AcidKetotifenBasophilsMolecular Sequence DataAnaphylaxisPruritusCetirizineGastric MucosaDibenzoxepinsMuscle, SmoothBetahistineRats, WistarHormone AntagonistsGuanidinesRats, Sprague-DawleyNeurokinin-1 Receptor AntagonistsGastric JuiceDopamine AntagonistsPentagastrinAnti-Allergic AgentsMuscle ContractionExcitatory Amino Acid AntagonistsAstemizoleCyproheptadineBinding, CompetitiveSerotoninTracheaMethacholine CompoundsCyclic AMPNarcotic AntagonistsDibenzazepinesBronchial Provocation TestsStomachMuscarinic AntagonistsCells, CulturedDrug InteractionsIleumInterleukin 1 Receptor Antagonist ProteinDrug Inverse AgonismPyridinesGastrinsIndolesDimethindeneImmunoglobulin ENizatidineCromolyn SodiumBradykininBronchiSRS-APheniraminePromethazineStimulation, ChemicalAtropinePiperazinesTime FactorsSneezingBenzazepinesGABA AntagonistsSubstance P