Metered dose inhalers (MDIs) are pressurized containers with medicine in aerosol form. The patient must press the canister to activate the propellant (usually Hydrofluoroalkane, or HFA) and inhale slowly for several seconds at the same time.

Instructions for Metered Dose Inhaler

Without a Spacer

One page instruction can be found from American Lung Association.

In Spanish:

Using a Spacer

Using spacer can help the inhalation process and make it easier to inhale the full dose.

In Spanish:

ProAir HFA

Instructions for Metered Dose Inhaler

Without a Spacer

Using a Spacer