Over-the-counterLower-cost generic available

Robitussin Dm

(Guaifenesin / Dextromethorphan)

  • Liquid
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Breaks up mucus and relieves cough.

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Over-the-counterLower-cost generic available

Our pharmacists’ bottom line

Robitussin Dm (Guaifenesin / Dextromethorphan) is okay for loosening congestion in your chest and throat, but it could prevent you from coughing the mucus up. You have to take it more often than other guaifenesin products.

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  • Robitussin Dm (Guaifenesin / Dextromethorphan) is a combination medicine that relieves multiple cold symptoms. It's good to use if you have chest congestion and a cough.
  • Helps loosen the mucus and phlegm that builds up and causes productive, wet coughs.
  • Robitussin Dm (Guaifenesin / Dextromethorphan) isn’t useful if you have a dry cough without mucus or phlegm.
  • The two medications in this product could potentially work against each other. Guaifenesin makes mucus easier to cough up, while dextromethorphan (the "DM" in Robitussin Dm (Guaifenesin / Dextromethorphan)) stops you from coughing.
  • Needs to be taken more often during the day than other products with guaifenesin, like Mucinex.
  • Can cause sleepiness, dizziness, and an upset stomach.

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  • (1) 273ml bottle of oral liquid
  • Cost for (1) 273ml bottle of oral liquid of Robitussin Dm (Guaifenesin / Dextromethorphan) at pharmacies
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Side effects for Robitussin Dm (Guaifenesin / Dextromethorphan)

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These are side effects of Robitussin Dm (Guaifenesin / Dextromethorphan) reported to the FDA by people taking it, and by doctors and pharmacists.

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What to expect when you take Robitussin Dm (Guaifenesin / Dextromethorphan)

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Tips from our pharmacists
  • Drink plenty of fluids while taking Robitussin Dm (Guaifenesin / Dextromethorphan) because liquid helps break down mucus.
  • Cough suppressant starts working in 15 to 30 minutes.
  • Follow age-specific dosing instructions on how much to take. Don't take more than the recommended dose.
  • If your cough lasts more than 7 days, call your doctor.

Risks and Warnings for Robitussin Dm (Guaifenesin / Dextromethorphan)

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  • People taking Robitussin Dm (Guaifenesin / Dextromethorphan) have reported nausea and vomiting. This is very rare and usually not serious. If you develop a fever with the nausea and vomiting, then talk to your doctor right away.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Robitussin Dm (Guaifenesin / Dextromethorphan)

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The FDA category for this medication is N. It is advised that you: Unknown