How to Use a Metered Dose Inhaler With an Inspirease Spacer

What is a metered dose inhaler with InspirEase Spacer?

Inhaled asthma medications are often delivered by using a device called a metered dose inhaler, or "MDI." The MDI is a small aerosol canister in a plastic holder. It delivers a burst of medication directly into the lungs.

To help make it easier for your child to use the MDI and ensure that the right amount of medication gets into the lungs, your child may be using an InspirEase spacer with the MDI. The purpose of the InspirEase is to hold the medication released from the MDI so that your child has time to inhale it into his lungs. Adults can also use the InspirEase, especially if they have problems using the MDI.

How does my child use a metered dose inhaler with InspirEase spacer?

The InspirEase spacer consists of a mouthpiece and a reservoir bag. To use it correctly, follow the instructions below.

  1. Place the mouthpiece into the opening of the reservoir bag, making sure to line up the locking tabs. Twist clockwise to lock.
  2. Carefully untwist the reservoir bag until it is completely open.
  3. Remove the aerosol canister from its plastic holder.
  4. Shake the canister well.
  5. Insert the stem of the canister securely into the adapter port of the mouthpiece.
  6. Place the mouthpiece between the teeth and seal the lips tightly around it.
  7. Press down firmly on the canister to release one puff of medication into the reservoir bag.
  8. Breathe in slowly through your mouth. Continue to breathe in until the bag is completely closed. If you hear a whistling sound, breathe more slowly until the whistling stops.
  9. Hold your breath and count to five slowly (5 seconds). This allows the medication to settle in the airways of the lungs.
  10. Breathe out into the bag slowly.
  11. Take the mouthpiece out of your mouth and breathe normally.
  12. Repeat Steps 2-10, following the dosage prescribed by your doctor one puff from the MDI at a time, waiting a minimum of 3-5 minutes between puffs.

How do I care for a metered dose Inhaler with InspirEase spacer?

After use, take the aerosol canister out the mouthpiece and disconnect the reservoir bag from the mouthpiece. The InspirEase and aerosol canister can be stored in the carrying case provided.


Carefully wash and dry the mouthpiece once every day with warm water and a paper towel or lint-free cloth. This prevents the holes from getting clogged, which can affect the amount of medication released.

The reservoir bag should not be washed. Replace the bag about once every 2-4 weeks. Replace the bag immediately if it should become damaged in any way (a hole or tear in the bag).

Replacement parts for your InspirEase can be obtained through your pharmacy. Your child's doctor will provide a prescription for parts.

How do I know when my child's metered dose inhaler is empty?

The number of puffs contained in your child's metered dose inhaler is printed on the side of the canister. After your child has used that number of puffs, you must discard the MDI even if it continues to spray. Keep track of how many puffs your child has used.

If your child uses an MDI every day to control his or her asthma symptoms, you can determine how long it will last by dividing the total number of puffs in the MDI by the total puffs your child uses every day. For example, if your child's MDI has 200 puffs and he uses 4 puffs per day, divide 200 by 4. In this case, your child's MDI would last 50 days. Using a calendar, count forward that many days to determine when to discard your child's MDI and begin using a new one.

If your child uses an inhaler only when he needs to, you must keep track of how many times your child sprays the inhaler. If you prefer, you can obtain an inhaler that "counts down" the number of puffs each time your child presses the inhaler. Ask your child's doctor for more information on these devices.

WebMD Medical Reference Reviewed by Dan Brennan, MD on October 16, 2019



American Association for Respiratory Care. A Guide to Aerosol Delivery Devices, 2007.

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