Mucinex Dm Side Effects

Published
Mucinex Dm Side Effects
Young doctor talking to group of his colleagues and business people during presentation in convention center.

Many readers are interested in the following topic: Side Effects of Mucinex D. We are happy to note, that our authors have already studied the modern research about the topic you are interested in. Based on the information provided in the latest medical digests, modern research and surveys, we provide extensive answer. Keep reading to find out more.

If these symptoms are mild, they probably won’t bother you. However, if you feel that these side effects are severe or if they don’t go away, contact your doctor.

Side Effects of Mucinex DM (guaifenesin and dextromethorphan hydrobromide)

Mucinex DM (guaifenesin and dextromethorphan hydrobromide tablet, extended release) is a combination of an expectorant and cough suppressant used to help loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive.

Mucinex DM temporarily relieves cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants, the intensity of coughing, and the impulse to cough to help you get to sleep. Mucinex DM is available over-the-counter (OTC).

Common side effects of Mucinex DM include dizziness, drowsiness, nausea, and vomiting.

If pregnant or breastfeeding, ask a health professional before use.

What are the side effects of Mucinex DM?

What are the serious side effects of Mucinex DM?

Mucinex DM may cause serious side effects including:

  • hives,
  • difficulty breathing,
  • swelling of your face, lips, tongue, or throat,
  • severe dizziness,
  • rash, and
  • itching

Get medical help right away, if you have any of the symptoms listed above.

What are the common side effects of Mucinex DM?

The most common side effects of Mucinex DM include:

Tell the doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of Mucinex. For more information, ask your doctor or pharmacist.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Is Mucinex DM addictive?

No information provided

What drugs interact with Mucinex DM?

No information provided

Side effect list for healthcare professionals

No information provided

Summary

Mucinex DM (guaifenesin and dextromethorphan hydrobromide tablet, extended release) is a combination of an expectorant and cough suppressant used to help loosen phlegm (mucus) and relieve cough symptoms. Common side effects of Mucinex DM include dizziness, drowsiness, nausea, and vomiting.

Multimedia: Slideshows, Images & Quizzes

Cold, Flu, and Cough: 13 Foods to Eat When Fighting the Flu

The best foods to eat when you have the flu soothe symptoms and help you feel better faster. Good foods to eat with the flu.

Cold Sores Causes, Remedies, & Diagnosis

How do you get rid of cold sores? First learn about the herpes virus and how it causes cold sores. When are cold sores.

Cold, Fever and Flu Symptoms in Children: Medications and Home Remedies

How long does a cold last? How long is a cold contagious? Colds and fevers are some of the most common ailments in children.

Cold and Flu: Finding Fast Cough Relief

Remedies for coughing to relieve symptoms, thin mucus, and clear phlegm include cough syrup and honey in hot water. Use.

How to Get Rid of a Cold: Natural Remedies

What home remedies work to get rid of a cold fast? Many claim cold symptoms and flu symptoms can be relieved with Echinacea.

Picture of Panniculitis from Cold

Panniculitis is an inflammation of the fat beneath the outer layer of skin, leaving the area red and tender. In this case, the.

Common Cold Quiz: Test Your Medical IQ

Take this quiz to learn the truth behind the infectious, contagious, uncomfortable disease known as the common cold. Test your.

Cold & Flu Quiz: Influenza vs. Common Cold

Aches? Pain? Fever? This Cold & Flu Quiz tests your knowledge on the difference between coming down with the common cold and.

GERD Quiz: Test Your Digestive Diseases IQ

Who is at risk for developing GERD? Are you? Take this quiz to learn what GERD is, if you’re at risk, and what you can do about.

Picture of Herpes Blister (Cold Sore)

Cold sores (fever blisters) are caused by the herpes simplex virus (HSV), passed on through contact with infected skin or body.

Picture of Cold Sores Treatment

You can’t cure HSV or a cold sore, but you can alleviate the pain it causes by avoiding spicy or acidic foods, applying ice, and.

Picture of Cold Sore and Canker Sore

Cold sores and canker sores aren’t the same. See a picture of Cold Sore and Canker Sore and learn more about the health topic.

Picture of Cold Sore Between Nose and Mouth

Can a cold sore appear somewhere other than your lip? They are not as common, but cold sores can appear anywhere on the face.

Picture of Influenza Virus

The flu is caused by viruses that infect the respiratory tract which are divided into three types, designated A, B, and C. See a.

Picture of Cold Sores (Fever Blisters)

Cold sores, sometimes called fever blisters, are groups of small blisters on the lip and around the mouth. See a picture of Cold.

Healthy Living: Ways to Warm Up if You’re Always Cold

Always shivering when others aren’t? Here are some tips for warming up if you’re a “cold-natured” person.

Why Do I Have the Chills? Reasons Other Than Fever

Chills and fever often come as a combo, but sometimes chills happen with a normal temperature. Find out what could be behind.

How to Prevent the Common Cold

What home remedies work for the common cold? The common cold is arguably the most common human illness. Learn how long the common.

Home Remedies for Sick Children

Home remedies for sick babies, toddlers, and kids can help with things like colds, flu, cough, sore throat, stuffy nose, fever.

Nasal Irrigation: Natural Relief for Cold & Allergy Symptoms

Clogged sinuses and congestion bothering you? Nasal irrigation can relieve sinus symptoms associated with colds and allergies.

Whooping Cough (Pertussis) Symptoms, Vaccine Facts

Whooping cough (Bordetella pertussis) is a highly contagious bacterial infection. Vaccines and antibiotics could prevent whooping.

A Cold or The Flu? How to Tell the Difference

Discover the difference between cold vs. flu symptoms. Learn the difference between cold and flu symptoms. Read about cold and.

Cold, Flu, & Cough: How to Clean After Illness

This slideshow gives you a room-by-room look at how and what to disinfect after someone in your family has been sick.

Cold, Flu, and Cough: Things That Suppress Your Immune System

A strong immune system is your best protection against infections and illnesses. Find out what can weaken that defense.

Cold, Flu, and Cough: How to Avoid Infectious Diseases

The right habits will lower your chances of catching an infectious disease. Learn what you can do to help yourself stay healthy.

Germs: Everyday Items with the Most Bacteria

Explore the germiest places you may encounter daily. Bacteria is everywhere. Learn tips to avoid germs and bacteria in public.

Cold and Flu: The Truth About Hand Sanitizer

Hand sanitizers are a convenient way to kill germs. But do they really work? Here’s what we found.

Flu Shots: 10 Facts About Flu Shots

What are the side effects of a flu shot? Who should get vaccinated? Learn the benefits and risks of vaccination for seasonal.

Cold and Flu: What Doctors Do to Boost Their Immune Systems

How can you make your immune system stronger? Why not try what the pros try?

Cold, Flu, & Cough: Symptoms of Immune System Problems

Your immune system is your main line of defense against infection and illness. Learn the warning signs that yours isn’t working.

Related Disease Conditions

Cough: 19 Tips on How to Stop a Cough

Coughing is a reflex that helps a person clear their airways of irritants. There are many causes of an excessive or severe cough including irritants like cigarette and secondhand smoke, pollution, air fresheners, medications like beta blockers and ACE inhibitors, the common cold, GERD, lung cancer, and heart disease.Natural and home remedies to help cure and soothe a cough include staying hydrated, gargle salt water, use cough drops or lozenges, use herbs and supplements like ginger, mint, licorice, and slippery elm, and don’t smoke. Over-the-counter products (OTC)to cure and soothe a cough include cough suppressants and expectorants, and anti-reflux drugs. Prescription drugs that help cure a cough include narcotic medications, antibiotics, inhaled steroids, and anti-reflux drugs like proton pump inhibitors or PPIs, for example, omeprazole (Prilosec), rabeprazole (Aciphex), and pantoprazole (Protonix).

Common Cold

The common cold (viral upper respiratory tract infection) is a contagious illness that may be caused by various viruses. Symptoms include a stuffy nose, headache, cough, sore throat, and maybe a fever. Antibiotics have no effect upon the common cold, and there is no evidence that zinc and vitamin C are effective treatments.

Do Cold Sores Mean You Have an STD?

Having a cold sore does not necessarily mean you have an STD. Most cold sores are caused by herpes simplex virus type 1 (HSV-1), which typically is not transmitted by sexual contact.

Cold Sores (Oral Herpes, Herpes Labialis)

Cold sores (labial herpes) are caused by herpes simplex virus type 1 infection and often appear on the mouth and lips. Read about treatment causes, symptoms, treatment, and diagnosis of oral herpes.

Pimple vs. Cold Sore

Pimples are areas of skin inflammation with pus in the center. Cold sores are fluid-filled blisters. Pimples are caused by bacterial overgrowth and inflammation. Cold sores are caused by infection with herpes simplex viruses (HSV-1 and HSV-2). Benzoyl peroxide and sometimes antibiotics treat acne. Antiviral medications accelerate the healing process of oral herpes.

Chronic Cough

Chronic cough is a cough that does not go away and is generally a symptom of another disorder such as asthma, allergic rhinitis, sinus infection, cigarette smoking, GERD, postnasal drip, bronchitis, pneumonia, medications, and less frequently tumors or other lung disease. Chronic cough treatment is based on the cause, but may be soothed natural and home remedies.

Why Am I Coughing Up Bloody Mucus?

Coughing up blood may be caused by benign conditions such as a throat infection or very serious conditions such as lung cancer. Learn when to go to the ER.

Cold and Cough Medicine for Infants and Children

The safety of giving infants and children over-the-counter (OTC) cold and cough medicine is important for caregivers to understand. While there is no “gold standard” recommendation for giving infants and children OTC cold and cough medicine for fever, aches, cough, and runny nose, a few standards have been recommended.

Is It Common to Get a Cold During Early Pregnancy?

It is common to get a cold and the flu during pregnancy. Find out if it affects the baby and how to take care of yourself.

Common Cold: Early Signs and 4 Stages

The common cold or viral rhinitis is an upper respiratory infection caused by several types of viruses. It is one of the most common infectious diseases affecting humans. A common cold may typically follow a certain pattern of progression that has four different stages.

Is a Cough Contagious?

There are many types of coughs: for example, dry cough, wet cough, a barking cough, whooping cough, stress induced cough, acute cough, and chronic cough. Cough is a symptom of an underlying condition or disease. Treatment of cough as a symptom is generally with OTC lozenges and liquids. The cause of the cough will be necessary to treat.

Hypothermia

Hypothermia or extreme exposure to cold can be classified as either accidental hypothermia (unintentional cold exposure) or intentional hypothermia (generally induced for a medical procedure). Hypothermia is caused by exposure to extremely cold temperatures. Risk factors for hypothermia include cold exposure and/or certain medical conditions. Symptoms of hypothermia include shivering; increased heart rate, breathing rate, and blood pressure; apathy, confusion, slurred speech, no reflexes, and dilated pupils. Medical attention is generally necessary to treat hypothermia.

Adenovirus 14 (Killer Cold Virus)

Adenovirus infection, particularly Ad14, or the “killer cold virus” has been on the increase in the past two years. Symptoms range from those experienced with colds, sore throat, bronchitis, pneumonia, diarrhea, pinkeye, fever, bladder infection, and neurological conditions. Diagnosis and treatment options need to be discussed with your physician.

Flu (Influenza)

Influenza (flu) is a respiratory illness caused by a virus. Flu symptoms include fever, cough, sore throat, runny nose, headache, fatigue, and muscle aches. The flu may be prevented with an annual influenza vaccination.

Diabetes and Safe Medications for Colds & Flu

If you have diabetes and catch a cold or the flu, can be more difficult to recover from infections and their complications, for example, pneumonia. Home remedies and over-the-counter (OTC) drugs used for the treatment of the signs and symptoms of colds and the flu may affect blood sugar levels in people with diabetes.Some medications are OK to take if you have diabetes get a cold or the flu include nonsteroidal anti-inflammatory drugs or NSAIDs, like acetaminophen (Tylenol) and ibuprofen (Motrin) to control symptoms of fever and pain. Most cough syrups are safe to take; however, check with your pediatrician to see what medications are safe to give your child if he or she has type 1 or 2 diabetes. If you have diabetes and are sick with a cold or flu, you need to check your blood sugar levels more frequently. Continue taking your regular medications. Eat a diabetic low-glycemic index diet rich in antioxidants. To prevent colds and the flu drink at least eight 8 ounce glasses of water a day. To replenish fluids, drink sports drinks like Gatorade and Pedialyte to replenish electrolytes. Avoid people who are sick, sneezing, coughing, or have other symptoms of a cold or flu.

How Cold Is Too Cold to Go Outside?

Human body is capable of maintaining a steady core temperature between 97°F and 99°F. However, it is essential to layer up in cold weather and wear comfortable clothes in warm weather, so that we stay protected from extremes of temperature.

How Long Is a Cold or Flu Contagious?

Viruses cause the common cold and the flu. Early symptoms and signs for a cold and the flu are similar, however, flu symptoms are typically more severe than cold symptoms. Cold and flu viruses are transmitted typically via coughing or sneezing.

How Do You Get Rid of a Cold Overnight?

Cold symptoms are part of your body’s healing processes. Most of the time, it does not require any help. However, you can get rid of a cold faster, even overnight, by resting, drinking hot fluids, blowing your nose, gargling with salt water, taking a hot shower, using a humidifier and taking OTC pain relievers and decongestants.

What Can I Take for a Cough While Pregnant?

Seasonal flu, colds, and allergies are common ailments affecting most people all round the year. You must always be cautious of any medication that you take. This is especially true in pregnancy and during breastfeeding, given the effects these drugs may have on the unborn or breastfed child.

What Happens if a Pregnant Woman Gets a Cold?

Having an ordinary cold shouldn’t be harmful to the baby or mother. Pregnant women are highly likely to pick up a cold at some time during pregnancy because it’s normal to catch two or three colds a year. A healthy lifestyle is a must to keep the immune system strong and to prevent colds.

Are Cold Sores (Fever Blisters) Contagious?

About 20% of cases of cold sores are caused by herpes simplex virus type 2 (HSV-2), and approximately 80% of cold sores are caused by herpes simplex virus type 1 (HSV-1). Cold sores are transmitted by sharing utensils and razors, kissing, and oral sex. There is no cure for cold sores.

Are Cold Sores the Same as Herpes?

What is the difference between cold sores and herpes? Cold sores are painful, unsightly sores that usually pop up around your mouth. Certain medications, home care and alternative therapies may help you get rid of cold sores fast.

COVID-19 vs. Flu vs. Cold

When you’re feeling sick, it can be difficult to distinguish the symptoms of a COVID-19 infection from the symptoms of the common cold or the flu (influenza). While fever is common with the flu and COVID-19, sneezing is typically only associated with colds. Though sore throats are typical with colds, they are uncommon with COVID-19 infections and the flu.

Cold vs. Flu

Though the common cold and flu share many signs and symptoms, they are caused by different viruses. Signs and symptoms include sneezing, sore throat, runny nose, fatigue, and cough. Treatment options for the cold and flu are similar and focus on reducing symptoms. Doctors may prescribe antivirals/neuraminidase inhibitors for the flu.

Whooping Cough (Pertussis)

Whooping cough (pertussis) is a highly contagious respiratory infection caused by the bacteria Bordetella pertussis. There are an estimated 300,000 plus deaths annually from whooping cough (pertussis). Whooping cough commonly affects infants and young children but can be prevented with immunization with the vaccine. First stage whooping cough symptoms are a runny nose, sneezing, low-grade fever, a mild cough with the cough gradually becoming more severe. After one to two weeks, the second stage of whooping cough begins.

How Can I Stop My Child From Coughing?

Treatment for cough is not recommended unless the cough interferes with the child’s sleep or activity or is accompanied by a fever. Different age groups of children require different therapies to stop them from coughing. Some good home remedies to treat cough in children include honey, warm milk, hydration, steam inhalation, resting, saline nose drops and other strategies.

Cold, Flu, Allergy Treatments

Before treating a cold, the flu, or allergies with over-the-counter (OTC) medications, it’s important to know what’s causing the symptoms, which symptoms one wishes to relieve, and the active ingredients in the OTC product. Taking products that only contain the medications needed for relieving your symptoms prevents ingestion of unnecessary medications and reduces the chances of side effects.

How Do I Get Rid of a Cold Sore Overnight?

You cannot get rid of cold sores overnight. There is no cure for cold sores. However, to speed up the healing time of a cold sore, you can consult with your doctor and take prescription medications such as antiviral tablets and creams. A cold sore may go away without treatment within a week or two.

Genital Herpes and Cold Sores: 10 Myths and Facts

Genital herpes and cold sores (oral herpes) are the names given to two types of infection caused by the two types of herpes simplex virus (HSV): HSV-1 and HSV-2.

Children’s Cough Causes and Treatments

Children’s cough causes include infection, acid reflux, asthma, allergies or sinus infection, whooping cough, and exposure to irritants. Treatment for a child’s cough include cough medicine for children over the age of four.

Is Drinking Cold Water Bad?

About 60 percent of the body is made up of water. It forms a major part of the blood. The cells and the body cannot function right if the water levels go down. Drinking cold water often causes “cold stress” in the body.

What Is the Fastest Way To Cure a Cough?

Learn what medical treatments can help ease your cough symptoms and speed up your recovery.

Sinus Infection vs. Cold

Viruses cause the common cold and most sinus infections. Bacterial and fungal infections may also cause a sinus infection. Signs and symptoms of colds and sinus infections include nasal irritation or dryness, sore throat, stuffy nose, nasal discharge/congestion, sneezing, and cough. Additional symptoms of sinus infections include sinus pressure behind the cheeks or eyes, facial pain when pressure is applied, bad breath, and thick yellow or green mucus. Treatment focuses on symptom relief.

How Do You Cure the Flu Quickly?

Flu or influenza is a common viral disease affecting the respiratory system. This infectious disease is caused by the influenza virus. Most cases of flu are self-limiting and can be easily managed at home.

How Long Does Whooping Cough Last?

What is whooping cough and how long does whooping cough last? Learn more about whooping cough and how to recover from whooping cough.

Is It a Cold or a Sinus Infection?

A sinus infection, also known as sinusitis or rhinosinusitis, is a condition in which the delicate membranes that line the sinuses may get swollen and become red. A cold or common cold is a viral infection. It affects the upper respiratory system, which includes the nose, mouth, throat, and lungs.

What Is the Best Treatment for Whooping Cough?

Learn what medical treatments can help ease your whooping cough symptoms and speed up your recovery.

What Can You Take for a Cold While Pregnant?

You may take over-the-counter (OTC) treatment after consulting with the physician because these are generally safe. OTC medications for colds and flus include acetaminophen, guaifenesin syrup and saline nasal drops or spray. You can also use natural remedies to treat a cold during pregnancy.

How Serious Is Whooping Cough in Adults?

What is whooping cough (pertussis) and how serious is it for adults? Learn causes, symptoms and treatments.

Is Whooping Cough (Pertussis) Contagious?

Whooping cough (pertussis) is a highly contagious respiratory infection caused by Bordetella pertussis. Whooping cough symptoms include severe coughing fits and whooping sound produced during inhalation. The bacteria spreads via airborne droplets produced during sneezing or coughing. There is a whooping cough vaccine that is typically administered during childhood vaccinations.

Emphysema, Chronic Bronchitis, and Colds

If you have a COPD such as emphysema, avoiding chronic bronchitis and colds is important to avoid a more severe respiratory infection such as pneumonia. Avoiding cigarette smoking, practice good hygeine, stay away from crowds, and alerting your healthcare provider if you have a sinus infection or cold or cough that becomes worse. Treatment options depend upon the severity of the emphysema, bronchitis, or cold combination.

How Can Teens Cope With A Cold?

Usually, teens have a healthy immune system to cope with common cold. Getting plenty of rest and drinking lots of fluids can ease the symptoms.

What Can Trigger a Cold Sore?

After you get infected with HSV, it lies inactively in the nerve cells inside your skin and may appear as another cold sore at the same place as before.

How Do You Know If Your Child Has Whooping Cough?

Whooping cough is a common issue that affects many children. Learn the signs of whooping cough, what causes it, how doctors diagnose it, and what you can do to treat it.

How Long Are You Contagious With the Flu?

The flu is contagious 1-2 days before symptoms start and up to 5-7 days after symptoms have developed. Young children and people who have weak immune systems may be contagious for longer.

What Can I Do for My Baby’s Cough?

Cough can cause significant discomfort to a baby. The baby may also have difficulty relaxing and sleeping. Numerous illnesses can cause cough as a primary symptom. Coughing is the result of the baby’s airway being affected or irritated.

How Do I Get Rid of My Toddler’s Cough?

Cough is one of the common complaints in toddlers. Get rid of your toddler’s cough by making sure your child rests, stays hydrated, takes over-the-counter pain medication, uses nasal spray and uses a humidifier or steam to provide relief.

What Do You Give a Child With a Cold?

Unfortunately, there is no cure for the common cold. Antibiotics may be used to fight bacterial infections, but they have no effect on viruses.

What Is Good for a Child’s Cold?

The common cold is one of the main reasons for missing schools in children and missing work in adults. Children are affected more commonly with cold than adults, who may have an average of two to three colds each year.

How Do You Tell If Your Child Has Allergies or a Cold?

Colds and allergies have different causes, but both involve the body’s immune system. Since the symptoms of allergies and the symptoms of a cold overlap, it can be hard to tell which one your child has.

How Do You Treat a Cold Naturally?

Hundreds of viruses and bacteria can cause the common cold and flu. Most cases of cold and flu usually resolve in a week with simple home remedies and over the counter (OTC) medications. If there is no improvement in a few days, it is advised to consult a doctor.

How to Identify Cold Symptoms in Children

When a child is sick, their way of showing it may not always be clear. Here’s what to look for to determine whether your child is sick with a cold.

Side Effects of Mucinex D

Cold and allergy symptoms can really be bothersome. Sometimes, you just need a little relief. There are several over-the-counter drugs that can help, including Mucinex D.

Mucinex D contains two active ingredients: guaifenesin and pseudoephedrine. Guaifenesin helps loosen mucus in your chest. Pseudoephedrine temporarily helps with congestion in your nose. Together, these two ingredients work well to relieve symptoms of the common cold and allergies. These include cough, stuffy nose, sneezing, and sinus congestion and pressure.

However, there are side effects associated with the ingredients in this medication that you should know about.

Mucinex D works by combining the actions of the drugs guaifenesin and pseudoephedrine. Each ingredient can affect different parts of your body in different ways. Here are the effects you should be aware of while you take this drug.

Cardiovascular system effects

The pseudoephedrine in Mucinex D can affect your heart and increase your blood pressure. Symptoms of heart-related side effects include:

  • increased heart rate
  • pounding heart beat

If these symptoms are mild, they probably won’t bother you. However, if you feel that these side effects are severe or if they don’t go away, contact your doctor.

Nervous system effects

The active ingredients in Mucinex D can both affect your nervous system. However, these side effects are rare.

Most of the side effects of guaifenesin are mild and well-tolerated. They include:

  • dizziness
  • headache
  • drowsiness

Nervous system side effects from pseudoephedrine can include:

  • anxiety
  • restlessness
  • tremors
  • headache
  • lightheadedness
  • dizziness
  • sleeping trouble

Digestive system effects

Guaifenesin rarely causes stomach problems when you use it at recommended doses. Pseudoephedrine can cause the following side effects:

  • nausea
  • vomiting
  • loss of appetite

If you experience nausea, try taking Mucinex D with food or a glass of milk.

Skin effects and allergic reaction

A possible side effect of Mucinex D is an allergic reaction. This may cause a skin rash. If you experience a rash after taking Mucinex D, stop taking it and contact your doctor.

If you notice any of the following, call 911 or local emergency services immediately:

  • the rash is worsening
  • you have swelling of your tongue or lips
  • you have any difficulties breathing

Taking this drug if you have certain conditions increases your risk of severe side effects. Talk to your doctor before taking Mucinex-D if you have medical conditions such as:

  • high blood pressure
  • heart disease
  • diabetes
  • increased eye pressure
  • thyroid problems
  • prostate problems

It’s very important to use Mucinex D exactly as directed. Most of the severe side effects of Mucinex D can happen when you use too much. If you have any questions about how much you should use, ask your pharmacist.

The following side effects can occur if you use too much Mucinex D:

  • changes in heart rhythm
  • chest pain
  • hallucinations
  • heart attack
  • seizures
  • severe diarrhea
  • severe increase in blood pressure
  • severe nausea
  • severe stomach pain
  • severe vomiting
  • stroke
  • kidney stones
  • brain or nerve damage

Symptoms of kidney stones include:

  • fever
  • chills
  • vomiting
  • severe, persisting pain in your back or side
  • foul-smelling urine
  • cloudy urine
  • blood in your urine
  • pain or burning when you urinate
  • difficulty urinating

Symptoms of brain or nerve damage include:

  • memory or vision loss
  • arm and leg weakness
  • coordination problems

Stop using Mucinex D and contact your doctor immediately if you have any of these severe side effects.

Maximum Strength Mucinex D contains double the amount of medicine. There are no additional side effects of the stronger formula as long as you take it as directed. However, taking the stronger formula at the dosage that’s recommended for the regular formula can lead to overuse and severe side effects.

Mucinex D can help most people relieve chest and nasal congestion without side effects that are harmful or worrisome. However, this is not true for everyone, especially if you have certain medical conditions or take other drugs.

If you’re unsure if Mucinex is right for you, ask your doctor. And if you can’t take Mucinex D, check out the best natural cough remedies and the best natural antihistamines.

Q:

When should I start feeling better?

A:

When taking Mucinex D, your symptoms should improve within 7 days. Stop taking it and call your doctor if your symptoms don’t go away or if they come back. Also, stop taking the drug if you develop a fever or rash. These could be signs of a more serious problem.

Answers represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.

Last medically reviewed on July 25, 2016

How we reviewed this article:

Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

  • Drug monograph: Guaifenesin; Pseudoephedrine. (2015, September)
    clinicalkey.com/#!/content/drug_monograph/6-s2.0-1066
  • Mucinex-D – guaifenesin and pseudoephedrine hydrochloride tablet, extended release. (2016, May)
    dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=734bfd5f-146e-47ab-8326-cc66a25fc540
  • Tietze, K. J. (2015). Cough. In D. L. Krinsky, S. P. Fereri, B. A. Hemstreet, A. L. Hume, G. D. Newton, C. J. Rollins, & K. J. Tietze (Eds.), Handbook of nonprescription drugs: An interactive approach to self-care (18 th ed.), 197-208. Washington, DC: American Pharmacists Association.
  • U.S. National Library of Medicine. (2011, May). Guaifenesin
    nlm.nih.gov/medlineplus/druginfo/meds/a682494.html
  • U.S. National Library of Medicine. (2014, February). Pseudoephedrine
    nlm.nih.gov/medlineplus/druginfo/meds/a682619.html
  • U.S. National Library of Medicine. (2016, May). Kidney stones
    nlm.nih.gov/medlineplus/kidneystones.html