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How to use a MDI with a Spacer

Using an MDI with a valved holding chamber 



  1. Remove the cap from the MDI and chamber. Shake well.
  2. Insert the MDI into the open end of the chamber (opposite the mouthpiece).
  3. Place the mouthpiece of the chamber between your teeth and seal your lips tightly around it.
  4. Breathe out completely.
  5. Press the canister once.
  6. Breathe in slowly and completely through your mouth. If you hear a "horn-like" sound, you are breathing too quickly and need to slow down.
  7. Hold your breath for 10 seconds (count to 10 slowly) to allow the medication to reach the airways of the lung.
  8. Repeat the above steps for each puff ordered by your doctor. Wait about 1 minute in between puffs.
  9. Replace the cap on your MDI when finished.
  10. If you are using a corticosteroid MDI, rinse your mouth and gargle using water or mouthwash after each use. You should always use a chamber with a steroid MDI.

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