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Patients & Consumers Conditions En Español Find an Allergist / Immunologist Just for Kids New Research Parent Resources Pollen Levels Publications Request a Speaker School Tools Seniors The Virtual Allergist™ Treatments Donate Now Search by Condition (A-Z) Search by Topic Allergy & Asthma Issues Educational Brochures Elements of Allergy and Asthma Order Public Education Materials Allergy Shots Drug Guide Sublingual Immunotherapy (SLIT)		Allergic Conditions: Metered-Dose Inhaler (MDI) A metered-dose inhaler (MDI) is a propellant-driven delivery mechanism for inhalation of asthma medications. MDIs are just one of three basic types of devices used to deliver inhaled medications. Nebulizers deliver fine liquid mists of medication through a "mask" that fits over the nose and mouth, using air or oxygen under pressure. They are frequently used to treat people with asthma who cannot use an inhaler, including infants, young children and acutely ill patients of all ages. Rotary inhalers and dry powder inhalers have been introduced to deliver asthma medication without using the propellant chlorofluorocarbon (CFC), which damages the earth’s ozone layer. Resources about metered-dose inhalers: Tips to Remember: Use of Inhaled Asthma Medications Visit an allergist/immunologist to learn more about allergic disease and your own medical condition. To find an allergist/immunologist near you, use the AAAAI's online Physician Referral Directory.
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