Delsym and Robitussin-DM contain the active ingredient dextromethorphan, a cough suppressant. In addition to dextromethorphan ...

While searching for the best cough medicine, you will find several over-the-counter (OTC) cough suppressants that contain the ...

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Dextromethorphan: Green says that with older adults, "we’ve seen cases of dizziness and confusion" in those using this cough suppressant, which is found in Delsym, Robitussin, and other products. "It ...