Comparative clinical efficacy, onset and duration of action of levocetirizine and desloratadine for symptoms of seasonal allergic rhinitis in subjects evaluated in the Environmental Exposure Unit (EEU)

Summary The Environmental Exposure Unit, an indoor pollen challenge system to test anti‐allergic medications, was used to compare the onset and duration of action and the efficacy of levocetirizine and desloratadine, two recently developed H1‐antagonists. In this double‐blind, placebo‐controlled, pa...

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