A metered dose inhaler sends a measured amount of medicine to the airways in your lungs. You must use the inhaler the right way for it to work. Here's how.
First wash your hands with soap and water. Then check the use-by date on the inhaler. Also check that the metal canister is put correctly into the plastic boot. Then check the counter on the inhaler. Make sure the inhaler still has doses left.
Remove the cap from the inhaler mouthpiece. Shake the inhaler several times. If this is the first time you're using the inhaler, prime it as directed. Priming means making sure it is ready to use. Prime the inhaler in the air away from your face.
There are two ways to use an inhaler: closed mouth and open mouth. Your healthcare provider will tell you which one to use.
Now stand or sit up straight. Take a deep breath in, tilting your head back slightly, and try to blow all the air out of your lungs. For the closed mouth method, put the inhaler mouthpiece in your mouth, past your teeth and above your tongue. Close your lips tightly around it so the medicine doesn't spray in your eyes. Always keep your inhaler at chin level.
Press down on the canister one time to release the medicine. At the same time, breathe in deeply and slowly for 3 to 5 seconds. Remove the mouthpiece from your mouth, then close your lips. Hold your breath for up to 10 seconds, if you can. Then breathe out slowly through your mouth.
Repeat these steps for each puff of medicine.
For the open mouth method, hold the inhaler up to your mouth with the mouthpiece two finger widths away.
Press down on the canister one time to release the medicine. At the same time, breathe in deeply and slowly for 3 to 5 seconds. Then close your lips.
Hold your breath for up to 10 seconds, if you can. Then breathe out slowly through your mouth.
Repeat these steps for each puff of medicine. Wait at least 15 seconds to 1 minute before taking the next puff, or as long as directed.
If you have a steroid inhaler, swish, rinse, and gargle with water after using it to prevent thrush, a fungal infection. Spit the water out. Don't swallow it.
Clean your inhaler after every use or as directed.
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Author: Laura Semko
© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
