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    Introduction: Inhaled therapies are likely to continue to dominate asthma and chronic obstructive pulmonary disease treatment. Dry powder inhalers (DPIs) have several advantages over pressurized metered-dose inhaler (pMDIs), that are most frequently marketed world-wide, but often difficult to use. This literature search focus on DPI features, with respect to Easyhaler, that may affect their use and patients' clinical benefit.Areas covered: DPIs are breath-actuated, easy to use, convenient to use, and more environmentally friendly. During inhalation, the formulation in a DPI is disaggregated by a turbulent airflow energy to generate particles with the greatest likelihood of deposition into the airways. The resistance among DPIs varies from low to high and those with high resistance are wrongly considered as difficult to use. Multidose reservoir-type DPIs have been developed to efficiently deliver a wide range of medications, including the fixed-dose combination of budesonide and formoterol. Easyhaler® shares a similar shape with pMDIs and, as other DPIs, its performance is unaffected by environmental and storage conditions. Due to Easyhaler internal design, dose emission is consistent irrespective of the inhalation flow used by each patient.Expert opinion: Easyhaler® may be considered one of the most convenient inhalers, for daily use, in patients with asthma or COPD.

    Citation

    Henry Chrystyn, Federico Lavorini. The dry powder inhaler features of the Easyhaler that benefit the management of patients. Expert review of respiratory medicine. 2020 Apr;14(4):345-351

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    PMID: 32013627

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