Metered-dose inhaler actuator, metered-dose inhaler and method of using the same

A metered-dose inhaler actuator, comprising:

• a housing having a mouthpiece portion and a canister receiving portion configured to receive a canister, said housing extending from an opening for receiving said canister to a mouthpiece opening;
• a member disposed within said housing and defining a valve stem receptacle configured to receive a valve stem of said canister, an orifice being formed in said member, said orifice being in fluid communication with said valve stem receptacle and extending to a face of said member opposite to said valve stem receptacle;
• a longitudinal axis of said orifice being aligned with a longitudinal axis of said valve stem receptacle;
• a longitudinal axis of said mouthpiece portion being arranged at an angle relative to said longitudinal axis of said orifice;
• and
• at least one air inlet opening being provided in an outer shell of said housing so as to be spaced from said opening for receiving said canister and from said mouthpiece opening, said at least one air inlet opening being in fluid communication with said mouthpiece opening.