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.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 5/13/2016
Medical Dictionary Definitions A - Z
Search Medical Dictionary
Cold and Flu Resources
- Track Cold and Flu Symptoms Near You
- Should You Call the Doctor for a Fever?
- Can Colds and Allergies Cause Tinnitus?