Breaks up mucus and relieves cough. 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.
Reviews & ratings
Reviews for Robitussin DM
of people (All ages) say Robitussin DM is worth it
› 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.
Downsides and risks
› 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.
Tips from our pharmacists for people taking the medication
› 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.