TerfenadineHistamine H1 Antagonists, Non-SedatingHistamine H1 AntagonistsCetirizineLoratadineAnti-Allergic AgentsDibenzoxepinsUrticariaHistamine AntagonistsChlorpheniramineAstemizolePromethazineTriprolidineRhinitis, Allergic, SeasonalDiphenhydramineButyrophenonesRhinitis, Allergic, PerennialPruritusSneezingCyproheptadineDoxepinCryptomeriaNasal Provocation TestsClemastineReceptors, Histamine H1HistamineCross-Over StudiesNasal ObstructionKetotifenPyrilamineHydroxyzineP-GlycoproteinChenopodium albumNose DiseasesDrug InteractionsOrganic Anion Transporters, Sodium-IndependentPollenArtemisiaRhinomanometryPhenothiazinesNasal DecongestantsDrug HypersensitivityAdministration, OralCyclizineBrompheniramineTrimeprazineHypersensitivityAnaphylaxisItraconazoleCitrus paradisiKetoconazoleRenal AgentsBetulaDouble-Blind MethodAngioedemaConjunctivitis, AllergicConjunctivitisPheniramineAntigens, PlantPrurigoAntipruriticsPiperidinesReceptors, HistamineEosinophil Cationic ProteinAdrenal Cortex HormonesBiliary TractDibenzazepinesEstroneOrganic Cation Transport ProteinsDimethindeneNonprescription DrugsHistamine ReleaseToluene 2,4-DiisocyanateCromolyn SodiumIntestinal AbsorptionNasal Lavage FluidGenes, MDRCommon ColdBileForced Expiratory Flow RatesDrug Utilization ReviewProbenecidAntitussive AgentsFlicker FusionLeukotriene D4Biological AvailabilityRhinitisRhodamine 123Organic Anion TransportersSleep StagesLeukotriene AntagonistsPremedicationBixaceaeDesensitization, ImmunologicMolecular ProbesSkin TestsVerapamilPiperazinesTreatment OutcomeAdministration, Intranasal