A metered dose inhaler (MDI) is a handheld device filled with medicine that must be breathed into the lungs (inhaled). The medicine is delivered by pushing down on a metal canister. This releases a preset amount of spray and mist through the mouth and into the lungs. Each MDI canister holds a certain number of doses (puffs).
Using a spacer with a metered dose inhaler may be recommended to help get more medicine into the lungs. A spacer is a plastic tube that connects to the MDI on one end and has a mouthpiece on the other end. A spacer holds the medicine in the tube for a short time. This allows more medicine to be inhaled.
Caring for your MDI
These symptoms may represent a serious problem that is an emergency. Do not wait to see if the symptoms will go away. Get medical help right away. Call your local emergency services (911 in the U.S.). Do not drive yourself to the hospital.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
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