HistamineReceptors, Histamine H1Histamine ReleaseReceptors, Histamine H2Histamine AntagonistsReceptors, HistamineHistamine H1 AntagonistsHistamine AgonistsReceptors, Histamine H3Histamine H2 AntagonistsHistamine N-MethyltransferasePyrilamineHistamine H3 AntagonistsMethylhistaminesDimapritCimetidineHistidine DecarboxylaseHistamine AgentsChlorpheniramineHormone AntagonistsDose-Response Relationship, DrugMetiamideNeurokinin-1 Receptor AntagonistsDopamine AntagonistsDiphenhydramineExcitatory Amino Acid AntagonistsPiperidinesGuinea PigsNarcotic Antagonistsp-Methoxy-N-methylphenethylamineMast CellsInterleukin 1 Receptor Antagonist ProteinMuscarinic AntagonistsRats, Sprague-DawleyGABA AntagonistsThioureaPurinergic P1 Receptor AntagonistsBasophilsImpromidineNicotinic AntagonistsRats, WistarAdenosine A2 Receptor AntagonistsAdrenergic alpha-1 Receptor AntagonistsPurinergic P2 Receptor AntagonistsBurimamideSerotonin 5-HT3 Receptor AntagonistsLeukotriene AntagonistsRanitidineSerotonin 5-HT2 Receptor AntagonistsHistamine H1 Antagonists, Non-SedatingAnaphylaxisSerotoninAdenosine A1 Receptor AntagonistsRadioligand AssayFamotidineCells, CulturedMuscle, SmoothAngiotensin Receptor AntagonistsMuscle ContractionAdrenergic alpha-AntagonistsDrug InteractionsBradykininAdrenergic alpha-2 Receptor AntagonistsBinding, CompetitivePyridinesAdrenergic AntagonistsGABA-A Receptor AntagonistsTerfenadinePruritusBronchial Provocation TestsTriprolidineSubstance PReceptors, SerotoninTime FactorsGastric AcidCalcium Channel BlockersSRS-ATracheaImmunoglobulin EReceptors, G-Protein-CoupledCromolyn SodiumAtropineGastric MucosaIndolesCyclic AMPCetirizinePiperazinesReceptors, EndothelinReceptors, N-Methyl-D-AspartateAdrenergic beta-2 Receptor AntagonistsNorepinephrineBenzazepinesDizocilpine MaleateBronchoconstrictionCapsaicinBronchiGastric JuiceSerotonin 5-HT1 Receptor AntagonistsPentagastrinAcetylcholine