Does Mucinex Actually Break Up Mucus? Unpacking the Science Behind Guaifenesin
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4 min read
According to a 2014 study published in the journal *Respiratory Care*, the active ingredient in Mucinex, guaifenesin, proved no more effective than a placebo at changing the properties of sputum. This finding challenges the common perception that Mucinex actually breaks up mucus, prompting a closer look at how this popular over-the-counter expectorant truly works.