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Your doctor may prescribe medication that you breathe in using a metered-dose inhaler (MDI). An inhaler is a pressurized sprayer that delivers a measured amount of medication. Inhalers work best with spacers. But if you don’t have your spacer with you, follow the steps below.
Shake the inhaler and remove the cap.
Breathe out fully.
Put the tip of the inhaler mouthpiece in your mouth. Close your lips around it. (If your health care provider tells you to use the "open-mouth" method, hold the inhaler 1-2 inches from your mouth.)
Begin to breathe in slowly and deeply as you press down on the inhaler to release the medication.
Hold your breath for a count of 10.
Then breathe out slowly through your mouth.
Repeat these steps for the number of puffs your doctor tells you to take.
If the inhaler is being used for the first time or has not been used for a while, prime it as directed by its maker.
If you are prescribed more than one inhaler, ask what order to take them in.