Definitions for guaifenesin
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Wiktionary
guaifenesin(Noun)
Glyceryl guaiacolate, an expectorant drug used to assist the expectoration of phlegm from the airways in acute respiratory tract infections.
U.S. National Library of Medicine
Guaifenesin
An expectorant that also has some muscle relaxing action. It is used in many cough preparations.
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