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- W3001239867 abstract "Objective: A new epinephrine hydrofluoroalkane (HFA) asthma metered-dose inhaler (MDI) was reformulated to replace the previously marketed epinephrine chlorofluorocarbon (CFC) MDI. In addition to the HFA propellant change, several enhanced modifications (i.e. changed from solution to suspension, 43% dose reduction, etc.) were made to the formulation of epinephrine HFA MDI. This study evaluates the 6-month long-term safety and efficacy profile of the new epinephrine HFA MDI.Method: The long-term safety study consists of two 3-month, multi-center, double- or evaluator-blinded, parallel-group, placebo, and active controlled stages. In each stage, subjects aged ≥12 years with intermittent or mild-to-moderate persistent asthma were randomized to receive epinephrine HFA (2 × 125 mcg/inhalation), placebo HFA, or epinephrine CFC (2 × 220 mcg/inhalation). Bronchodilator efficacy was assessed in Stage 1 and was determined primarily by the change in the forced expiratory volume in 1 s (ΔFEV1) at Week 12, relative to the same day baseline.Results: The primary efficacy endpoint (AUC0-6hrs of %ΔFEV1 at Week 12) for epinephrine HFA (47.3 ± 54.2) closely paralleled those for the active control, epinephrine CFC (41.0 ± 43.4). Both groups were found to be overall comparable in bronchodilator efficacy. Both also showed low incidence rates of AEs with tremor being most commonly reported for epinephrine HFA. All AEs found were non-serious and non-significant. The observed changes in vital signs, ECG, serum glucose, and potassium were minimal and not clinically relevant.Conclusion: This study demonstrated that the new epinephrine HFA is overall comparable, in both safety and efficacy, to the previous epinephrine CFC." @default.
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- W3001239867 date "2020-01-20" @default.
- W3001239867 modified "2023-10-16" @default.
- W3001239867 title "Long-term safety and efficacy studies of epinephrine HFA metered-dose inhaler (Primatene® Mist): a two-stage randomized controlled trial" @default.
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- W3001239867 doi "https://doi.org/10.1080/02770903.2020.1713147" @default.
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