Environmentally Friendly Asthma Inhalers May Increase Hospitalizations

Large VA study links dry powder inhalers to higher emergency visits in older asthma patients

Jul 23, 2025

∙ Paid

A massive observational study in the US Veterans Health Administration found that switching asthma patients from metered-dose inhalers (MDIs) to dry powder inhalers (DPIs) led to increased hospitalizations and emergency department visits, raising questions about the trade-offs between environmental benefits and patient outcomes.

Study Details

In 2021, the…

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