Receptors, Histamine H3Receptors, Histamine H1HistamineReceptors, Histamine H2Histamine H1 AntagonistsSerotoninHistamine AgonistsHistamine H2 AntagonistsReceptors, HistamineHistamine AntagonistsHistamine H3 AntagonistsHistamine ReleaseMethylhistaminesChlorpheniramineDimapritCimetidineReceptors, SerotoninSerotonin Plasma Membrane Transport ProteinsReceptor, Serotonin, 5-HT2AMetiamideReceptor, Serotonin, 5-HT1ASerotonin Uptake InhibitorsThioureaSerotonin AntagonistsImpromidineDiphenhydramineReceptor, Serotonin, 5-HT2CFamotidineSerotonin Receptor AgonistsPiperidinesHistamine N-MethyltransferaseHistamine AgentsReceptor, Serotonin, 5-HT2BSerotonin 5-HT2 Receptor AntagonistsPyrilamineRanitidineReceptors, Serotonin, 5-HT2Receptor, Serotonin, 5-HT1BSerotonin AgentsGuinea PigsBurimamideHistidine DecarboxylaseHistamine H1 Antagonists, Non-SedatingDose-Response Relationship, DrugReceptors, Serotonin, 5-HT1DoxepinIsothiuroniumSerotonin SyndromeRadioligand AssayReceptors, Serotonin, 5-HT3Serotonin 5-HT1 Receptor AntagonistsTripelennamineSerotonin 5-HT2 Receptor Agonistsp-Methoxy-N-methylphenethylamineRats, Sprague-DawleyReceptors, Serotonin, 5-HT4Serotonin 5-HT1 Receptor AgonistsReceptors, G-Protein-CoupledTerfenadineTriprolidineGastric AcidMast CellsRats, WistarTryptophan HydroxylaseImidazolesKetotifenHormone AntagonistsCyproheptadineSerotonin 5-HT3 Receptor AntagonistsDibenzoxepinsNeurokinin-1 Receptor AntagonistsExcitatory Amino Acid AntagonistsDopamine AntagonistsKetanserinPruritusPiperazinesBinding, CompetitiveBetahistineNarcotic AntagonistsPyridinesMuscle, SmoothGuanidinesCetirizineMethysergideGastric MucosaIndolesDrug InteractionsMuscarinic AntagonistsDibenzazepinesHydroxyindoleacetic AcidInterleukin 1 Receptor Antagonist ProteinDrug Inverse AgonismAnaphylaxisBrainMuscle ContractionFluoxetineBehavior, AnimalCyclic AMPGABA AntagonistsRaphe Nuclei