A nebulizer is a device used to deliver liquid medication in the form of a fine mist (aerosol) or powder. Medication may be given through a nebulizer to treat respiratory problems, such as asthma, chronic obstructive pulmonary disease (COPD), or pneumonia.
The nebulizer allows the medication to go directly to a person's airways and lungs, and the medication can be given over a long period of time. The person inhales the medication while breathing normally through a mouthpiece or face mask. A nebulizer makes inhaling medication easier for people who are having serious difficulty breathing or who have trouble using an inhaler, which requires careful timing and control of one's breathing.
WebMD Medical Reference from Healthwise