How does metered dose inhaler work




















If the canister is new, it is full. The number of puffs a canister contains is listed on the label. Do NOT put your canister in water to see if it is empty. This does not work. Your inhaler canister has puffs in it, you are told to take 8 puffs total every day. This canister of medicine will last 25 days, so if you started using it on January 1, you should replace it on or before January To download from the "Please wait" page, move your cursor to the top right, click on the download icon, and choose where to save it on your computer.

Once saved, you will be able to open with Adobe Acrobat reader and use all of the features of the action plan. Email info GetAsthmaHelp. Steps for Using an Inhaler Priming Priming is needed to make sure the dosing chamber of the MDI fills with the right amount of medication when you are ready to use it. You will need to prime the MDI the first time you use a new MDI and again if you have not used your inhaler for several days or weeks.

The instructions that come with your inhaler tell you when and how many times the MDI must be primed. Read the instruction for each inhaler carefully because each inhaler you have may have different priming instructions.

If you have trouble reading the instructions, ask your pharmacist for help. Get ready Take off the cap and shake the inhaler. Breathe out all the way. If you don't have a spacer, hold inhaler 1 to 2 inches or two finger widths in front of your open mouth Breathe in slowly As you start breathing in slowly through your mouth, press down on the inhaler one time.

If you are using a spacer or valved-holding chamber, press down on the inhaler before starting to breathe in. Breathe in slowly. Keep on breathing in slowly, as deeply as you can.

Hold your breath Hold your breath as you count to 10 slowly, if you can. For inhaled quick-relief medicine like albuterol , wait about 1 minute between puffs. It is commonly used to treat breathing difficulties related to asthma, chronic obstructive pulmonary disease COPD , and other respiratory problems. Each inhaler consists of a small canister of medicine connected to a mouthpiece.

The canister is pressurized. As you press down on the inhaler, it releases a mist of medicine. You breathe that mist into your lungs. Otherwise, your airways will not receive the right amount of medicine. Read and follow all instructions that come with your inhaler. Some inhalers steroid also recommend rinsing your mouth out with water and gargling with water spit out the water after use. These instructions are for a metered-dose inhaler only.

Inhaled dry-powder inhalers are used differently. To use a dry powder inhaler, close your mouth tightly around the mouthpiece and breathe in quickly. Last Updated: July 22, This information provides a general overview and may not apply to everyone.

Talk to your family doctor to find out if this information applies to you and to get more information on this subject. An asthma action plan is developed by your doctor. It contains written instructions about what you should do if…. Outdoor air pollution is a mix of gases and toxic particles in the air we breathe. Regular exposure to…. Visit The Symptom Checker. Read More. A spacer can also help if you have problems pressing the inhaler and breathing in at the same time.

If you are using a corticosteroid inhaler, gargle and rinse out your mouth with water after use. Do not swallow the water.

Swallowing the water will increase the chance that the medicine will get into your bloodstream. This may make it more likely that you will have side effects. To use a spacer with an inhaler Shake the inhaler. Remove the inhaler cap, and place the mouthpiece of the inhaler into the spacer.

Check the inhaler instructions to see if you need to prime your inhaler before you use it. If it needs priming, follow the instructions on how to prime your inhaler. Remove the cap from the spacer. Hold the inhaler upright with the mouthpiece at the bottom. Tilt your head back a little, and breathe out slowly and completely. Place the spacer's mouthpiece in your mouth. Press down on the inhaler to spray one puff of medicine into the spacer, and then start breathing in slowly.

Wait to inhale until after you have pressed down on the inhaler. Some spacers have a whistle. If you hear it, you should breathe in more slowly.

Hold your breath for 10 seconds. This will let the medicine settle in your lungs. If you need to take a second dose, wait 30 to 60 seconds to allow the inhaler valve to refill. To use an inhaler without a spacer Shake the inhaler as directed. Remove the cap. Check the instructions to see if you need to prime your inhaler before you use it. Position the inhaler in one of two ways: You can place the inhaler in your mouth.

This is easier for most people.



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