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Seretide: a pharmacoeconomic analysis.

Author(s): Fritscher L, Chapman KR

Affiliation(s): Asthma & Airway Centre, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada.

Publication date & source: 2008, J Med Econ., 11(3):555-70.

Publication type: Review

BACKGROUND: The costs of asthma and chronic obstructive pulmonary disease (COPD), the two most common chronic respiratory illnesses, are substantial and rising. The fixed-dose combination of fluticasone and salmeterol has been a safe and effective therapy for these diseases. OBJECTIVES: To review the pharmacoeconomic impact of the fixed-dose combination of inhaled fluticasone and salmeterol in asthma and COPD. METHODS: A systematic review of the literature was carried out to identify pharmacoeconomic studies with fixed-dose salmeterol and fluticasone (Seretide, Advair, Viani). In addition, abstracts from recent respiratory meetings were sought, and any unpublished data were requested from the manufacturer. RESULTS: For asthma, when compared to treatment with inhaled corticosteroid monotherapy and antileukotrienes, alone or combined, salmeterol/fluticasone inhalation produced a higher proportion of successfully treated weeks, improvement in lung function and quality of life, and fewer treatment failures. The costs per quality-adjusted life year (QALY) for fluticasone/salmeterol have been favourable not only in patients with moderate to severe disease but also in patients with mild disease or patients not previously treated with a maintenance therapy. The excess cost per QALY varied from US$2,670 to US$26,445. For COPD, a clear reduction in exacerbation rates and improvement in quality of life has been demonstrated with salmeterol/fluticasone along with a likely improvement in survival rates. The incremental cost per QALY ratio for fluticasone/salmeterol against placebo ranged from US$9,512 to US$64,038. CONCLUSIONS: The data currently available suggest that the cost effectiveness of combination therapy with fluticasone and salmeterol is favourable for asthma and COPD in a variety of clinical settings.

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