LoratadineCetirizineHistamine H1 Antagonists, Non-SedatingHistamine H1 AntagonistsHydroxyzineAnti-Allergic AgentsTerfenadineRhinitis, Allergic, PerennialRhinitis, Allergic, SeasonalSneezingAstemizoleHistamine AntagonistsCedrusNasal ObstructionButyrophenonesReceptors, Histamine H1ChlorpheniraminePseudoephedrineCross-Over StudiesCyproheptadineButanesKetoconazoleUrticariaDouble-Blind MethodPromethazineNonprescription DrugsConsumer Product SafetyTriprolidineDrug Utilization Review