About dextromethorphan/Guaifenesin/Phenylephrine
DEXTROMETHORPHAN; GUAIFENESIN; PHENYLEPHRINE treats the symptoms of the common cold, allergies, or flu. It works by reducing cough, loosening mucus, and decreasing a runny or stuffy nose. It is a combination of a cough suppressant, a decongestant, and an expectorant.
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