A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Bronchodilator combinations are generally inhalers or inhalation devices, which contain more than one bronchodilator, or a bronchodilator and a steroid.
Bronchodilator combinations with more than one bronchodilator usually consist of a short acting and a long acting bronchodilator. The bronchodilators may work by different mechanisms to dilate the air passages, and makes air flow easier.
Bronchodilator combinations with a steroid and bronchodilator act more like a preventative. Steroids block the body's inflammatory response and effectively improve lung function and reduce asthma symptoms. The bronchodilator in this combination is generally a long acting one and it also acts as a preventer.
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