Commonly known medicines are QVAR and Maxair Autohaler.
Maxair Autohaler: Maxair Autohaler is a pressurized metered-dose aerosol unit for oral inhalation. It provides a fine-particle suspension of pirbuterol acetate in the propellant mixture of trichloromonofluoromethane and dichlorodifluoromethane, with sorbitan trioleate. Each actuation delivers 253 mcg of pirbuterol (as pirbuterol acetate) from the valve and 200 mcg of pirbuterol (as pirbuterol acetate) from the mouthpiece. The unit is breath-actuated such that the medication is delivered automatically during inspiration without the need for the patient to coordinate actuation with inspiration. Each 14.0 g canister provides 400 inhalations and each 2.8 g canister provides 80 inhalations. Maxair Autohaler provides a soft spray of medicine. It is designed to automatically deliver a precisely measured dose of your medicine with each inhalation,when medicine is delivered, you will hear a click and feel a soft inhalation.
QVAR Autohaler: Qvar 100 Autohaler 100 micrograms per actuation pressurised inhalation solution. A colourless solution in a pressurised aluminium canister fitted with a metering valve and an actuator. Qvar contains a propellant, which does not contain any chlorofluorocarbons (CFCs). Qvar contains beclomethasone dipropionate in solution in propellant HFA-134a resulting in an extrafine aerosol.