Guaifenesin the active ingredient in Mucinex, is an expectorant. Expectorants help people cough or sneeze to remove excess mucus (phlegm) from the respiratory tract. Guaifenesin is the only ...

For this reason, our medical experts recommend using single-ingredient drugs whenever you can. Read more on what you can do about drug recalls. For more information on the Mucinex recall and a ...