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Delsym vs Robitussin-DM: How Do They Differ?
Delsym (dextromethorphan) and Robitussin-DM (guaifenesin and dextromethorphan) are over-the-counter (OTC) medications used to ...
To find the best over-the-counter (OTC) cold medicine for you ... contain DM in the name contain dextromethorphan, including: ...