Compare Delsym vs. Robitussin DM
Head-to-head comparisons of medication uses, side effects, ratings, and more.
Delsym (Dextromethorphan) is a good option for treating dry cough. It's not safe to take with MAO inhibitors though.
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.
- 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.
- 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.
- 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.
- 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.
- Liquid extended release
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