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Efficacy of desloratadine, 5 mg, compared with fexofenadine, 180 mg, in patients with symptomatic seasonal allergic rhinitis

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This is the first U.S.-based study to compare efficacy and safety of desloratadine with fexofenadine in subjects with symptomatic seasonal allergic rhinitis (SAR). In this double-blind study, subjects were randomized to desloratadine, 5 mg (n = 290), fexofenadine, 180 mg (n = 288), or placebo (n = 144) once daily for 15 days. Primary end point was mean change from baseline to study end in morning instantaneous total symptom score (AM NOW TSS) excluding congestion. Secondary measures included change from baseline in the morning/evening reflective TSS (AM/PM PRIOR TSS) excluding congestion, AM NOW individual symptom score (AM NOW ISS) including congestion, and the AM/PM PRIOR ISS including congestion. Subjects self-evaluated their symptoms on a five-point scale. Mean AM NOW TSSs were significantly reduced from baseline at day 15 with desloratadine (p = 0.006) and fexofenadine (p = 0.024) versus placebo. Desloratadine and fexofenadine were not statistically different (p = 0.491); the upper limit of the 95% CI for desloratadine to fexofenadine (0.259) was within the prespecified noninferiority margin of 0.7 U. Decrease in mean AM/PM PRIOR TSS excluding congestion was comparable between desloratadine and fexofenadine (p = 0.405; CI = 0.221) but was significantly greater with both active treatments versus placebo (desloratadine, p < 0.001; fexofenadine, p = 0.003). Desloratadine and fexofenadine provided greater reduction in the AM NOW ISS and AM/PM PRIOR ISS (both including congestion) versus placebo; reductions were comparable between active treatments. All treatments were well tolerated. Desloratadine, 5 mg, and fexofenadine, 180 mg, provide comparable efficacy and tolerability in the treatment of SAR. Both treatments are significantly more effective than placebo.
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Document Type: Research Article

Publication date: 2006-05-01

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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