Medical Definition of Expectorant

Expectorant: A medication that helps bring up mucus and other material from the lungs, bronchi, and trachea. An example of an expectorant is guaifenesin, which promotes drainage of mucus from the lungs by thinning the mucus, and also lubricates the irritated respiratory tract.

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QUESTION

Which illness is known as a viral upper respiratory tract infection? See Answer

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Reviewed on 12/11/2018