Inhaler propellant showdown: does new formula clean lungs better?

NCT ID NCT05755932

First seen Feb 27, 2026 · Last updated May 08, 2026 · Updated 6 times

Summary

This study tested whether a new inhaler propellant (HFO) affects the lungs' natural cleaning process differently than the current standard (HFA). Thirty-five healthy, non-smoking adults inhaled a harmless radioactive tracer and had their lung clearance measured with a special camera. The goal was purely to understand the propellant's effect, not to treat any disease.

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Contacts and locations

Locations

  • Research Site

    Kansas City, Kansas, 66160, United States

  • Research Site

    Baltimore, Maryland, 21287, United States

  • Research Site

    Chapel Hill, North Carolina, 27599, United States

  • Research Site

    Pittsburgh, Pennsylvania, 15213, United States

  • Research Site

    Glasgow, G4 0SF, United Kingdom

Conditions

Explore the condition pages connected to this study.