montelukast

Definition / meaning of montelukast

The active ingredient in a drug used to treat symptoms of asthma, such as trouble breathing, tight chest, wheezing, coughing, and runny nose. Montelukast blocks the action of a substance that causes airways in the lungs to narrow and causes other symptoms of asthma. It is a type of leukotriene receptor antagonist and a type of antiasthmatic agent.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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