An Overview
In accordance with an international agreement to reduce ozone-depleting propellants, manufacturers of many inhalers have changed the propellants in inhalers from chlorofluorocarbons (CFC) to hydrofluoroalkane (HFA). In addition, many asthma medications now have the most natural propellant -- you!
So called ‘dry powder inhalers', or DPIs, get medicine into the lungs when patients breathe in. For many patients this is easier as there is no need to time breathing in with pushing...

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