The Ventolin HFA test MDIs also had an increased leak ... The manufacturers' reported dose per actuation for both MDIs is 108 µg of albuterol sulfate, which corresponds to 90 µg of albuterol ...

FDA statement on approval of OTC Primatene Mist to treat mild asthma. DailyMed. PRIMATENE MIST- epinephrine inhalation aerosol. DailyMed. ALBUTEROL SULFATE HFA- albuterol sulfate aerosol, metered.

After reformulating with HFA propellant and changing the inhaler device, Primatene Mist became available OTC again in 2018.

After exposure to extreme environmental temperatures, an increase in propellant-leak rate was observed with Proventil HFA and Ventolin HFA MDIs, but little to no change was found in particle size ...

It is undisputed that the Inhaler Patents do not claim the active ingredient, albuterol sulfate, in the reference ProAir® HFA Inhalation Aerosol product. Amneal filed an Abbreviated New Drug ...

MDIs can recognized by the abbreviation HFA (which stands for the propellant hydrofluoroalkane). These include Ventolin HFA, Proventil HFA, Proair HFA, Atrovent HFA, Alvesco HFA, and Asmanex HFA.