Compare Robitussin DM vs. Nyquil Cold And Flu

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Robitussin Dm
(guaifenesin / dextromethorphan)

Nyquil Cold And Flu
(acetaminophen / dextromethorphan / doxylamine)

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.Relieves cold and flu symptoms, and helps you sleep. Nyquil Cold And Flu (Acetaminophen / Dextromethorphan / Doxylamine) is a useful combination medicine that relieves cold and flu symptoms and will help you sleep. Make sure you really need all of its ingredients.
Find lowest prices
Powered by GoodRxSave on your next prescription. Be sure you’re getting the lowest price for your medication, even if you have insurance.
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
5.05Robitussin DM
Reviews for Robitussin DM
75%
of people (All ages) say Robitussin DM is worth it
37%
say it works well
7%
say it's a big hassle
724 reviews
Have you used Robitussin Dm (guaifenesin / dextromethorphan)?
Worth itNot sureNot worth it
Reviews for Nyquil Cold And Flu
83%
-8% worse vs. Robitussin DM
42%
-5% worse vs. Robitussin DM
7%
Same vs. Robitussin DM
1188 reviews
Have you used Nyquil Cold And Flu (acetaminophen / dextromethorphan / doxylamine)?
Worth itNot sureNot worth it
Side effects
Robitussin DMNyquil Cold And Flu

We haven’t found good data for Robitussin DM side effects.

FDA side effect reports for Robitussin DM »

We haven’t found good data for Nyquil Cold And Flu side effects.

FDA side effect reports for Nyquil Cold And Flu »
How it works
Robitussin DMNyquil Cold And Flu
Robitussin Dm (Guaifenesin / Dextromethorphan) is a combination medicine. Guaifenesin is an expectorant that breaks up and thins out mucus. Dextromethorphan is a cough suppressant.Nyquil Cold And Flu (Acetaminophen / Dextromethorphan / Doxylamine) is a combination medicine that treats cold and flu symptoms. Acetaminophen relieves pain and reduces fever. Dextromethorphan is a cough suppressant. Doxylamine is an antihistamine that relieves a runny nose and makes you very sleepy.
Type of medication
Robitussin DMNyquil Cold And Flu
Over-the-counterOver-the-counter
Available as
Robitussin DMNyquil Cold And Flu
  • Liquid
  • Pill
  • Liquid
Used for
Robitussin DMNyquil Cold And Flu
Risk factors for serious side effects
Robitussin DMNyquil Cold And Flu
  • Using other medications that affect serotonin
Detailed Robitussin Dm (guaifenesin / dextromethorphan) risks & warnings »
  • Drinking more than 2 alcoholic beverages a day
  • Taking with other Tylenol-containing medicines
  • History of liver disease
  • Using other medications that affect serotonin
  • Taking with alcohol
Detailed Nyquil Cold And Flu (acetaminophen / dextromethorphan / doxylamine) risks & warnings »
Pregnancy

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

Alcohol
Robitussin DMNyquil Cold And Flu
No alcohol related info.
  • Avoid using alcohol and other drugs that make you drowsy.
Kidneys and liver
Robitussin DMNyquil Cold And Flu
No kidneys and liver related info.
  • To avoid hurting your liver, you have to keep track of the total amount of acetaminophen (APAP) you're taking since it's a very common ingredient in pain and cold/flu combination medicines.
Pain
Robitussin DMNyquil Cold And Flu
No pain related info.
  • The pain reliever (acetaminophen) is easier on your stomach and has fewer drug interactions than other pain medications like aspirin or ibuprofen.
Upsides and benefits
Robitussin DMNyquil Cold And Flu
  • 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.
  • Nyquil Cold And Flu (Acetaminophen / Dextromethorphan / Doxylamine) is a combination medicine that relieves multiple cold symptoms. It's good to use if you have watery eyes, a cough, fever, and pain.
  • The cough medicine (dextromethorphan) works well and has very few side effects.
  • The pain reliever (acetaminophen) is easier on your stomach and has fewer drug interactions than other pain medications like aspirin or ibuprofen.
  • The antihistamine (doxylamine) will help you sleep.
Downsides and risks
Robitussin DMNyquil Cold And Flu
  • 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.
  • If you don't really need all of the medications in this combination, you're taking extra medicine and might have extra side effects for no reason.
  • You shouldn't use it if you have high blood pressure.
  • To avoid hurting your liver, you have to keep track of the total amount of acetaminophen (APAP) you're taking since it's a very common ingredient in pain and cold/flu combination medicines.
Tips from our pharmacists for people taking the medication
Robitussin DMNyquil Cold And Flu
  • 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.
  • Doxylamine (the antihistamine ingredient) can make you tired, so take it close to bedtime.
  • Follow age-specific dosing instructions on how much to take. Don't take more than recommended on the package.
  • Contains acetaminophen, also known as Tylenol or APAP. Taking too much can cause liver failure and death. Don't take more than what's recommended on the package or with other Tylenol-containing products.
  • Avoid using alcohol and other drugs that make you drowsy.
  • Let your doctor know if your symptoms don't improve in a few days, or if you have a really bad sore throat with a fever, headache, nausea, or vomiting.
Learn more
More about Robitussin DMSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Robitussin Dm (guaifenesin / dextromethorphan)?
Worth itNot sureNot worth it
More about Nyquil Cold And FluSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Nyquil Cold And Flu (acetaminophen / dextromethorphan / doxylamine)?
Worth itNot sureNot worth it