What are the examples of the metered dose inhaler?
Updated
A metered-dose inhaler is a device used to deliver medication into your lungs.
A metered-dose inhaler has a pressurized canister of medication that fits into a mouthpiece. In most instances, a dose of medication is released into your lungs by pushing the canister into the mouthpiece. Another type releases medication automatically when you inhale. Some metered-dose inhalers have counters that track how many doses remain.
