Robitussin maximum strength cough + chest congestion dm

Robitussin Cough + Chest Congestion DM Side Effects

Generic Name: dextromethorphan / guaifenesin

Medically reviewed by Last updated on Nov 3, 2019.

  • Overview
  • Side Effects
  • Dosage
  • Interactions
  • Pregnancy
  • Reviews
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Note: This document contains side effect information about dextromethorphan / guaifenesin. Some of the dosage forms listed on this page may not apply to the brand name Robitussin Cough + Chest Congestion DM.

For the Consumer

Applies to dextromethorphan / guaifenesin: oral capsule, oral liquid, oral packet, oral solution, oral syrup, oral tablet, oral tablet extended release 12 hour

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at

For Healthcare Professionals

Applies to dextromethorphan/guaifenesin: oral capsule, oral capsule extended release, oral elixir, oral granule, oral liquid, oral suspension extended release, oral tablet, oral tablet extended release


The manufacturer has not provided adverse event information.

1. “Product Information. Robafen DM (dextromethorphan-guaifenesin).” Major Pharmaceuticals Inc, Livonia, MI.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer

More about Robitussin Cough + Chest Congestion DM (dextromethorphan / guaifenesin)

  • During Pregnancy
  • Dosage Information
  • Drug Interactions
  • Pricing & Coupons
  • En Español
  • 4 Reviews
  • Drug class: upper respiratory combinations
  • FDA Alerts (3)

Consumer resources

  • Robitussin Cough + Chest Congestion DM
  • Robitussin DM

Other brands: Mucinex DM, Tussin DM, Mucinex Children’s Cough, Coricidin HBP Chest Congestion & Cough, … +15 more

Professional resources

  • Guaifenesin-DM NR (FDA)

Related treatment guides

  • Cough
  • Expectoration

Robitussin Cold and Cough

Generic Name: dextromethorphan, guaifenesin, and pseudoephedrine (dex troe meth OR fan, gwye FEN e sin, soo doe e FED rin)
Brand Name: Altarussin CF, Capmist DM, Despec DM, Entre-Cough, Maxifed DMX, Robitussin Cold and Cough, Tusnel

Medically reviewed by on Dec 4, 2019 – Written by Cerner Multum

  • Overview
  • Side Effects
  • Dosage
  • Interactions
  • Pregnancy
  • More

The Robitussin Cough & Cold D brand name has been discontinued in the U.S. If generic versions of this product have been approved by the FDA, there may be generic equivalents available.

What is Robitussin Cold and Cough?

Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth.

Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Robitussin Cold and Cough is a combination medicine used to treat cough, stuffy nose, sinus congestion and chest congestion caused by allergies, the common cold, or the flu.

Robitussin Cold and Cough will not treat a cough that is caused by smoking, asthma, or emphysema.

Robitussin Cold and Cough may also be used for purposes not listed in this medication guide.

Important Information

Do not use this medicine if you have used an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

Before taking this medicine

You should not use Robitussin Cold and Cough if you are allergic to dextromethorphan, guaifenesin, or pseudoephedrine.

Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Ask a doctor or pharmacist if it is safe for you to take Robitussin Cold and Cough if you have:

  • high blood pressure or coronary artery disease;

  • diabetes;

  • glaucoma;

  • epilepsy or other seizure disorder;

  • enlarged prostate or urination problems;

  • pheochromocytoma (an adrenal gland tumor); or

  • cough with mucus, or cough caused by emphysema or chronic bronchitis.

It is not known whether Robitussin Cold and Cough will harm an unborn baby. Ask a doctor before using this medicine if you are pregnant.

This medicine may pass into breast milk and may harm a nursing baby. Decongestants may also slow breast milk production. Ask a doctor before using this medicine if you are breast-feeding a baby.

Artificially sweetened cold medicine may contain phenylalanine. If you have phenylketonuria (PKU), check the medication label to see if the product contains phenylalanine.

How should I take Robitussin Cold and Cough?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cough and cold medicine is usually taken only for a short time until your symptoms clear up.

Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.

Do not crush, chew, or break an extended-release tablet. Swallow it whole.

Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.

Do not take for longer than 7 days in a row. Talk with your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache or skin rash.

Store at room temperature away from moisture and heat. Do not allow liquid medicine to freeze.

What happens if I miss a dose?

Since Robitussin Cold and Cough is taken when needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking Robitussin Cold and Cough?

Robitussin Cold and Cough may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Drinking alcohol can increase certain side effects of this medicine.

Ask a doctor or pharmacist before using any other cold, cough, or allergy medicine. Robitussin Cold and Cough are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain drug. Check the label to see if a medicine contains a decongestant, expectorant, or cough suppressant.

Robitussin Cold and Cough side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using this medication and call your doctor at once if you have:

  • fast or uneven heart rate;

  • severe dizziness or anxiety, feeling like you might pass out;

  • severe headache;

  • mood changes;

  • fever; or

  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, uneven heartbeats, seizure).

Common side effects may include:

  • diarrhea;

  • dizziness, drowsiness;

  • sleep problems (insomnia); or

  • feeling nervous, restless, or irritable.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Robitussin Cold and Cough?

Ask a doctor or pharmacist before using Robitussin Cold and Cough if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.

Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking this medicine with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Copyright 1996-2018 Cerner Multum, Inc. Version: 5.07.

Medical Disclaimer

More about Robitussin Cough & Cold D (dextromethorphan / guaifenesin / pseudoephedrine)

  • Side Effects
  • During Pregnancy
  • Dosage Information
  • Drug Interactions
  • Drug class: upper respiratory combinations
  • FDA Alerts (2)

Other brands: Tusnel, Capmist DM, Poly-Vent DM, Aldex GS DM, … +6 more

  • Cough and Nasal Congestion

Photo: SuperStock/Getty Images

Welcome to Am I Dying, a column that hopes to save you from your late-night WebMD spiraling. You can email us your hypochondriac questions at [email protected]

Is Mucinex (or Claritin, or Sudafed) making me high? I swear every time I take an allergy or cold medication, I feel floaty and fuzzy-brained. And NyQuil definitely makes me hungover. What are the cold drugs doing to me??

Do kids these days still take Dayquil to get high before school? Is that a thing that ever really happened, or am I misremembering a horror story employed by D.A.R.E. as a scare tactic at my high school? Either way, the association is definitely there, and I tend to avoid daytime cold medicines for that very reason: the last thing I want when I have a cold is to feel sick and high. This is why I am a major advocate of the disgusting but effective Neti Pot.

Do not get me wrong: I am neither anti-chemical nor totally anti-drug. However! There is something so unpleasant about the cold-meds high — that weird circum-skull pressure and the faint buzzing behind your eyes. (Or … at least that’s what it’s like for me … ?) It doesn’t feel like it’s good for you, which of course, doesn’t necessarily mean it isn’t.

Lots of cold medications can, however, be overkill, says Albert Ahn, clinical instructor of internal medicine at NYU Langone Health. “A lot of these all-in-one medications — DayQuil, NyQuil, or Tylenol Cold and Flu formulations — they all have a bunch of stuff in them, and people usually don’t read the labels,” says Ahn. “Typically these cold and flu formulations will have an anti-pyretic, for the fever, they’ll have an antihistamine for congestion, and they’ll have a cough suppressant.” The most common cough suppressant found in cold medications is dextromethorphan, indicated on most medications by the “DM” after the brand name (Claritin DM, Robitussin DM, etc.). “And dextromethorphan,” says Ahn, “can definitely mess with your head.”

“ can very much cause people to feel very loopy,” he says. “It can cause dizziness, confusion, cognitive slowing, drowsiness, sleepiness, and in rare cases it can cause people to hallucinate if you take too much of it.”

Another common cold medication ingredient to look out for are antihistamines, like those found in Benadryl. “In most of the older generation of antihistamines, like Benadryl, the main side effect is drowsiness,” says Ahn. “So that can also have a sort of neurological side effect of feeling slow, drowsy, foggy.” And when you’re taking a medication that includes an antihistamine and dextromethorphan, you’re only compounding those effects. Add a glass of wine at dinner on top (don’t), and you’ll augment that woozy feeling even further.

Taking one of these cold and flu heavy-hitters might be okay when you’re in for the night and headed to bed, says Ahn, but they aren’t a great idea for most people to take during the daytime, particularly if they’re hoping to perform decently well at work. It seems counterintuitive, but to be at your best, Ahn recommends taking separate medications for each symptom rather than one of the all-in-ones. “If you have a cough, take a cough medication. If you have a fever, you can take Tylenol. If you have a runny nose, take an newer, less-drowsy antihistamine,” he says. “But treat each symptom separately so you can have a little more control over what you’re taking, because you may be taking something you don’t need.”

So while medications like DayQuil and NyQuil and Mucinex can feel like the fastest and easiest way to feel better quicker, they may do more harm than good — especially if you want to avoid that fuzzy brain feeling. In most cases, you’ll be better off taking more pills, specifically targeted to your particular symptoms, because, yes, your cold meds are kind of making you high.

Robitussin Adult DM Max Non-Drowsy Cough & Chest Congestion Syrup



Directions. Shake well before using. Do not take more than 6 doses in any 24-hour period. This adult product is not intended for use in children under 12 years of age. Age: dose. Adults and children 12 years and over: 2 teaspoons every 4 hours. Children under 12 years: do not use. Other information. Each teaspoon contains: sodium 5 mg. Store at 20-25 degrees C (68-77 degrees F). Alcohol-free. Dosage cup provided. Green boxes, red boxes. Ages 12 & over, ages under 12. Adult Robitussin??, children’s Robitussin??. Use as directed, use as directed.

Marketing Description

Robitussin?? Adult DM Max Non-Drowsy Cough & Chest Congestion Syrup.
See New Dosing Information.
Dextromethorphan HBr (Cough Suppressant), Guaifenesin (Expectorant).
Chest Congestion/Mucus.
Maximum Strength for Mucus Relief.
For Ages 12 & Over.
8 fl oz (237 ml).

Other Description

Temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold.
Helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes.
Questions or comments? Call weekdays from 9 AM to 5 PM EST at 1-800-762-4675.
Robitussin?? Knows.
Choosing the right product is important. Robitussin?? has different products for adults and for children.
Dosage Cup Included.
For most recent product information, visit
Parents: learn about teen medicine abuse
??2009 Wyeth.


Active Ingredients (in each 5 ml tsp) – Purposes: Dextromethorphan HBr, USP 10 mg – Cough Suppressant. Guaifenesin, USP 200 mg – Expectorant. Inactive Ingredients: Anhydrous Citric Acid, Artificial & Natural Flavors, Carboxymethylcellulose Sodium, D&C Red No. 33, FD&C Red No. 40, Glycerin, High Fructose Corn Syrup, Menthol, Microcrystalline Cellulose, Polyethylene Glycol, Povidone, Propylene Glycol, Purified Water, Saccharin Sodium, Sodium Benzoate, Sorbitol Solution, Xanthan Gum.


Packaged with temper-evident bottle cap. Do not use if breakable ring is separated or missing. Warnings. Do not use. If you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric, or emotional conditions, or Parkinson’s disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have. Cough that occurs with too much phlegm (mucus). Cough that lasts or is chronic such as occurs with smoking, asthma, chronic bronchitis, or emphysema. Stop use and ask a doctor if cough lasts more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.


Package Data

Length: 2.4 IN
Height: 6.2 IN
Width: 2.5 IN
Units In Package: 1
Package Type: BOX
Package Size: 8.0 FL OZ
Net Weight: 8.0 FL OZ

Robitussin Cough Control Extra Strength

Keep out of reach of children. This package contains enough medication to seriously harm a child. Do not exceed the maximum dosage. Do not use if you have an allergy to any of the listed ingredients. Stop use and talk to a doctor if symptoms do not improve in 7 days or if high fever, rash or persistent headache is present, as these could be signs of a serious condition. Talk to a healthcare professional before using this product if you suffer from persistent/chronic cough (as occurs with smoking), shortness of breath or chronic lung disease (e.g. asthma or emphysema), if you are pregnant, nursing, or if you have taken a drug for high blood pressure. DO NOT take with other cough suppressants or expectorants or any other cough and cold medications, unless recommended by a healthcare professional, as harm may occur. Do not use if you are now taking a prescription monoamine oxidase inhibitor (MAOI), a selective serotonin reuptake inhibitor (SSRI), or other medications for depression, psychiatric, or emotional conditions, or Parkinson’s disease, or for 2 weeks after stopping the medication. If you are not sure if your prescription medication contains one of these drugs, ask a doctor or pharmacist before taking this product. In case of overdose: Stop use and contact a doctor or poison control centre immediately, even if there are no symptoms.

Robitussin Ac

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 10/28/2016

Robitussin Ac (guaifenesin and codeine) is a combination of an expectorant and a narcotic used to treat cough and to reduce chest congestion caused by upper respiratory infections or the common cold. Robitussin Ac is available in generic form. Common side effects of Robitussin Ac include:

  • drowsiness,
  • dizziness,
  • lightheadedness,
  • headache,
  • facial flushing,
  • nausea,
  • vomiting,
  • upset stomach,
  • constipation,
  • skin rash,
  • itching, or
  • warmth, redness, or tingling under your skin.

Tell your doctor if you have serious side effects of Robitussin Ac including:

  • mental/mood changes (e.g., hallucinations),
  • fast or irregular heartbeat, or
  • trouble urinating.

Get medical help right away if you have a very serious side effect of Robitussin Ac such as seizure.

Take Robitussin Ac by mouth with or without food, usually every 4 to 6 hours as needed with a full glass of water or as directed by your doctor. Robitussin Ac may interact with cimetidine, quinidine, naloxone, naltrexone, or other medicines that make you sleepy (such as allergy medicine, narcotics, sleeping pills, muscle relaxers, and seizure medicine, depression, or anxiety). Tell your doctor all medications you use. During pregnancy, Robitussin Ac should be used only if prescribed. It is not recommended during the last 3 months of pregnancy due to increased risk for serious side effects in a newborn baby (e.g., withdrawal symptoms such as irritability, abnormal/persistent crying, diarrhea, seizures). Tell the doctor if you notice symptoms in your newborn. This medication passes into breast milk and could have undesirable effects on a nursing infant. Consult your doctor before breastfeeding. The codeine in this medication may be habit-forming, and you may have withdrawal symptoms if you suddenly stop taking it.

Our Robitussin Ac (guaifenesin and codeine) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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