Over-the-counterLower-cost generic available



  • Pill
  • Liquid extended release
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Relieves coughing.

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Over-the-counterLower-cost generic available

Our pharmacists’ bottom line

Delsym (Dextromethorphan) is a good option for treating dry cough. It's not safe to take with MAO inhibitors though.

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  • Good for treating dry cough.
  • Available in drugstores either by itself or in combination with other medications to treat cold and allergy symptoms.
  • Available as a liquid and a tablet.
  • Some products relieve cough for up to 12 hours.
  • Can't take dextromethorphan if you're taking MAO inhibitors (drugs used to treat Parkinson's disease, depression, and other emotional conditions). If taken together, they will cause dangerously high blood pressure levels.
  • If you're taking this in combination with other cold and allergy medications, you should read labels closely to make sure you're not accidentally taking too much of a single ingredient.

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Side effects for Delsym (Dextromethorphan)

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

0 reports

What to expect when you start Delsym (Dextromethorphan)

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Tips from our pharmacists
  • 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 Delsym (Dextromethorphan)

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    • Higher risk if:
    • Using other medications that affect serotonin

    Serotonin syndrome is a rare but potentially life-threatening condition when there's too much serotonin in the brain. The dextromethorphan in Delsym (Dextromethorphan), when used with other medicines that affect serotonin (antidepressants, lithium, triptans, St. John's wort), increases your risk for serotonin syndrome. Symptoms include fast heart rate, sweating, muscle stiffness or spasms, fever, and confusion. Get medical attention right away if you have these symptoms.

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

Tips from pharmacists and people taking Delsym (Dextromethorphan)

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