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Arlington, TX
A 22-year-old female asked:

I got pneumonia and doctor prescribed me robitussin ac but not working much. is it ok if i switched to robitussin dm (guaifenesin and dextromethorphan). what is the difference in dm n a?

1 doctor answer2 doctors weighed in
Dr. John cuong Doan
Family Medicine 18 years experience
DM has: dextromethorphan which is a cough suppressant. AC just means there is codeine included, a narcotic suppressant. Pneumonia needs to be treated with antibiotics and expectorant, along with anti-inflammatory medicines. You can take the DM but it is unlikely to be more effective than with codeine. You can try a formulation with Hydrocodone like Tussionex or TussiCaps.

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Last updated Mar 19, 2018

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