Definition:
Metered dose inhalers (MDIs) are portable, hand-held devices that use a pressurized liquid gas, or propellant, to deliver doses of your asthma medication. MDIs reliably deliver a specific amount of medication to you.
A MDI consists of 2 parts:
- A plastic case with a mouthpiece
- A pressurized canister that contains the active medication
When you press the MDI, a small mist of medicine is released that you can inhale directly or through a spacer. MDIs can be used for both quick relief and controller medications.
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Also Known As: puffer, asthma puffer, inhaler, asthma inhaler
