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Onset of Efficacy of Montelukast in Seasonal Allergic Rhinitis

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Montelukast has shown efficacy for seasonal allergic rhinitis (SAR); however, onset of action for SAR has not been presented. The aim of this study was to determine the onset of action of montelukast, 10 mg, measured in days after starting once-daily therapy, in spring and fall studies of SAR. Data were analyzed from four 2-week, double-blind, placebo-controlled phase III clinical trials. End points included the daytime nasal symptoms score, the nighttime symptoms score, the composite symptoms score (mean of the scores for daytime nasal symptoms and nighttime symptoms), and the daytime eye symptoms score. Using a 0 –3 scale (no symptoms to severe symptoms), daytime symptoms were rated by patients once daily each evening; nighttime symptoms were rated once daily each morning. Analyses of data pooled across the four evening dosing studies showed that montelukast, compared with placebo, produced significant improvement (p ≤ 0.001) from baseline by day 2 of treatment (after 2 doses) in the daytime nasal symptoms score, nighttime symptoms score, and composite symptoms score. Differences between montelukast and placebo for these end points in mean change from baseline at day 2 were −0.08 (95% CI, −0.12, −0.03), −0.08 (95% CI, −0.13, −0.04), and −0.08 (95% CI, −0.12, 0.04), respectively. These data represented a mean reduction for montelukast of 11–13% in symptom scores from baseline for each end point at day 2. When compared with the full 2-week response, these observed differences for each end point at day 2 (after 2 doses) represented a substantial proportion (over 70%) of the overall treatment benefits seen. Significant improvement (p ≤ 0.001) in the daytime eye symptoms score was seen by day 1 ( −0.08 [−0.12, −0.03]), after the first dose. In patients treated for SAR, montelukast has a beneficial effect on daytime and nighttime symptoms by the 2nd day of daily therapy.
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Document Type: Review Article

Publication date: January 1, 2005

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 and by having the potential to directly impact the quality of patient care. AAP welcomes the submission of original works including peer-reviewed original research and clinical trial results. Additionally, as the official journal of the Eastern Allergy Conference (EAC), AAP will publish content from EAC poster sessions as well as review articles derived from EAC lectures.

    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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