Abstract
Background: Fluticasone propionate/salmeterol multidose, dry powder inhaler (MDPI) was the first and only authorized generic inhaled corticosteroid/long-acting beta agonist (ICS/LABA) combination inhaler at the time of this study. This offers the potential for significant prescription cost-savings for both patients and accountable care organizations. The objective of the study was to demonstrate patients’ clinical response to generic fluticasone propionate/salmeterol MDPI when switched from one of its brand name competitors. Methods: The study was approved by the Institutional Review Board at MCPHS University. This was a prospective chart review of a large, multi-center ambulatory care organization in the Greater Boston area. Patients 12 years of age or older who were switched from a brand-name ICS/LABA inhaler to the generic fluticasone/salmeterol MDPI were included in the study. The primary endpoint was worsened asthma control requiring a change in therapy, oral corticosteroid therapy, or hospitalization at or before 12 weeks after the inhaler was switched. Results: In total, 203 patients met inclusion criteria. Of those 203 patients, 35 had a change in therapy due to worsened asthma control (17.2% of patients, 95% CI 12.0% to 22.4%) within 12 weeks. Total projected yearly prescription cost-savings for patients who were switched and remained on the generic inhaler was $581,628. Conclusion: Eighty-three percent of patients maintained appropriate asthma control after switching from a brand ICS/LABA inhaler to the generic fluticasone/salmeterol MDPI for 12 weeks. Switching to the generic inhaler resulted in significant prescription cost-savings for the accountable care organization.
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