- Dextromethorphan doesn’t actually treat the cause of your cough or speed up recovery—but it can offer you some much-needed relief.
- Dextromethorphan works by decreasing activity in the part of the brain that causes coughing. It comes alone or in combination with antihistamines, cough suppressants, pain relievers and decongestants.
- NyQuil Cough is a great example of a cough syrup that combines dextromethorphan with an antihistamine. It offers you powerful cough relief during the night so you can get the sleep you need.
- DayQuil Cough, on the other hand, contains just DXM as its active ingredient, and gives you up to 8 hours of non-drowsy cough relief so you can have a productive day.
What is Dextromethorphan (DXM)?
When dealing with a cough due to cold or flu, dextromethorphan, sometimes referred to as DXM, is often part of the remedy. But what is dextromethorphan, exactly?
DXM is a cough suppressant that’s found in many over-the-counter medications. It’s used to temporarily relieve a cough caused by the common cold or flu.