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LGWP Propellants

A transition from the use of HFA 134a and HFA 227 as propellants in metered dose inhalers (MDIs) to lower global warming potential (LGWP) propellants is in the early stages


Learn more about these LGWP propellants:

HFA 152a
HFO 1234ze(e)


Recent news about LGWP propellants:

Resources for the LGWP transition

MSP Supporting the Shift to Next-Generation Propellants banner

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Learn more about the transition:

IPAC-RS Workshop on the transition

View IPAC-RS’s October 11, 2023 Workshop on the Transition to Low Global Warming Potential Propellants for Metered Dose Inhalers

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Upcoming Events
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July 13-July 16: 2026 ISAM Congress, Taipei, Taiwan

September 15-September 18: DDL New Researcher Network Summer Event, London, UK

September 16-September 17: IPAC-RS 2026 Nasal Innovation Forum, Jersey City, NJ, USA

September 24-September 25: Inhaled & Nasal Biologics | DNA Forum, Cambridge, UK

October 14-October 15: Advancing Bioequivalence Frameworks for Inhalation and Nasal Drug Products: Optimizing In Vitro, In Vivo, and In Silico Methods, Rockville, MD, USA

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