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Mucinex Dm

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Active ingredients
  • Guaifenesin 1200 mg
  • Dextromethorphan Hydrobromide 60 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2012
Label revision date
April 8, 2025
Active ingredients
  • Guaifenesin 1200 mg
  • Dextromethorphan Hydrobromide 60 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2012
Label revision date
April 8, 2025
Manufacturer
RB Health (US) LLC
Registration number
NDA021620
NDC root
63824-072

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Drug Overview

Mucinex®DM is a medication that combines 1200 mg of guaifenesin (an expectorant that helps loosen phlegm and thin bronchial secretions) with 60 mg of dextromethorphan HBr (a cough suppressant). It comes in the form of extended-release tablets designed to provide maximum strength relief. This medication works by helping to clear mucus from your airways, making coughs more productive, while also controlling the urge to cough, which can be particularly helpful for getting a good night's sleep.

You can use Mucinex®DM to temporarily relieve cough caused by minor throat and bronchial irritation, such as that which may occur with the common cold or from inhaled irritants. Its dual action not only thins and loosens mucus but also helps reduce the intensity of coughing, allowing you to feel more comfortable.

Uses

This medication is designed to help you breathe easier by loosening phlegm (mucus) and thinning bronchial secretions. This action helps clear out bothersome mucus from your airways, making your coughs more productive.

You can also use this medication to temporarily relieve coughing caused by minor throat and bronchial irritation, which can happen with the common cold or from inhaling irritants. It can help reduce the intensity of your cough and lessen the urge to cough, making it easier for you to get a good night's sleep.

Dosage and Administration

When taking this medication, it's important to swallow the extended-release tablet whole. Do not crush, chew, or break it, as this can affect how the medication works. Make sure to take it with a full glass of water, and you can take it at any time, regardless of meals.

For adults and children aged 12 years and older, the recommended dosage is one extended-release tablet every 12 hours. You should not take more than two tablets in a 24-hour period. If you have children under 12 years of age, this medication is not suitable for them, so please avoid using it for that age group.

What to Avoid

You should avoid using this product if you are under 12 years of age. Additionally, do not take it if you are currently using a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication often prescribed for depression or certain psychiatric conditions. If you have recently stopped taking an MAOI, wait at least two weeks before using this product. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist.

It's also important to follow the dosage instructions carefully and not exceed the recommended amount. Misuse or taking more than directed can lead to serious health issues, including dependence (a condition where your body becomes reliant on a substance). Always prioritize your safety and well-being when using any medication.

Side Effects

You should be aware of some important side effects and warnings associated with this medication. It is not recommended for children under 12 years old, and you should avoid using it if you are currently taking a monoamine oxidase inhibitor (MAOI) or have taken one in the past two weeks. If you have a persistent cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus, consult your doctor before using this product.

If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, stop using the medication and seek medical advice, as these may indicate a more serious condition. Additionally, if you are pregnant or breastfeeding, it's important to talk to a healthcare professional before using this medication. In case of an overdose, seek medical help immediately or contact a Poison Control Center.

Warnings and Precautions

You should not use this medication if you are under 12 years old. Additionally, avoid it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression or certain other conditions, or if you have stopped taking an MAOI within the last two weeks. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist.

Before using this product, it's important to talk to your doctor if you have a long-lasting cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is producing a lot of mucus. If you experience an overdose, seek medical help or contact a Poison Control Center immediately. You should also stop using this medication and call your doctor if your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these may indicate a more serious condition.

Overdose

If you suspect an overdose, it’s crucial to seek medical help immediately or contact a Poison Control Center. Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing.

Don’t wait for symptoms to worsen; acting quickly can make a significant difference in your safety. Always prioritize getting professional assistance in these situations.

Pregnancy Use

If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using this medication. They can provide guidance on whether it’s safe for you and your baby. Always prioritize your health and the health of your child by seeking expert advice.

Lactation Use

If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using any medication. This ensures that you understand any potential risks and can make informed decisions about your health and the health of your baby. Always prioritize open communication with your doctor regarding your breastfeeding journey.

Pediatric Use

It’s important to be cautious when considering medication for your child. This particular medication is not recommended for children under 12 years of age. For those who are 12 years and older, the dosage is one tablet every 12 hours, with a maximum of two tablets in a 24-hour period.

Always consult with a healthcare professional before giving any medication to ensure it’s safe and appropriate for your child's specific needs.

Geriatric Use

While there are no specific guidelines or recommendations for older adults regarding this medication, it's always important to approach any new treatment with caution. Since the insert does not mention any dosage adjustments or safety concerns for elderly patients, you should still consult with your healthcare provider to ensure that this medication is appropriate for your individual health needs.

If you or a loved one is an older adult, discussing any potential risks or benefits with a doctor can help ensure safe and effective use of the medication. Always prioritize open communication with your healthcare team to address any questions or concerns you may have.

Renal Impairment

If you have kidney problems, it's important to know that the information provided does not include specific guidelines for dosage adjustments, special monitoring, or safety considerations related to renal impairment (kidney issues). This means that there are no tailored recommendations for how your treatment may need to change based on your kidney function.

Always consult your healthcare provider for personalized advice and to ensure that your treatment plan is safe and effective for your specific situation. They can help monitor your kidney health and make any necessary adjustments to your medications.

Hepatic Impairment

If you have liver problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or precautions for your condition. This means that there are no tailored guidelines for how this medication may affect you if you have hepatic impairment (liver issues).

Always consult your healthcare provider for personalized advice and to discuss any concerns regarding your liver health and how it may relate to your treatment. They can help ensure that you receive the safest and most effective care.

Drug Interactions

It's important to be cautious about combining medications. If you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression, certain psychiatric conditions, or Parkinson's disease, you should not use this product. Additionally, you should wait at least two weeks after stopping an MAOI before starting this medication. If you're unsure whether your current prescription includes an MAOI, please consult your doctor or pharmacist for clarification.

Always discuss any medications you are taking with your healthcare provider to ensure your safety and avoid potentially harmful interactions. Your health is a priority, and your provider can help you make informed decisions about your treatment options.

Storage and Handling

To ensure the best performance and safety of your product, store it at a temperature between 20-25°C (68-77°F). This temperature range helps maintain the integrity of the device.

When handling the product, be sure to do so with clean hands and in a clean environment to avoid contamination. Always follow any specific disposal instructions provided to ensure safe and responsible disposal of any components.

Additional Information

No further information is available.

FAQ

What is Mucinex®DM?

Mucinex®DM is a medication that contains 1200 mg of guaifenesin and 60 mg of dextromethorphan HBr, designed as an expectorant and cough suppressant in extended-release tablet form.

How does Mucinex®DM work?

It helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive while controlling the impulse to cough.

What are the indications for using Mucinex®DM?

Mucinex®DM temporarily relieves cough due to minor throat and bronchial irritation, the intensity of coughing, and the impulse to cough to help you sleep.

What is the recommended dosage for adults and children over 12?

Adults and children 12 years and older should take 1 extended-release tablet every 12 hours, not exceeding 2 tablets in 24 hours.

Are there any contraindications for Mucinex®DM?

Do not use Mucinex®DM for children under 12 years of age or if you are taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one within the last 2 weeks.

What should I do if I experience side effects?

Stop using Mucinex®DM and consult a doctor if your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or persistent headache.

Can I take Mucinex®DM if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, consult a health professional before using Mucinex®DM.

How should I take Mucinex®DM?

Take Mucinex®DM with a full glass of water and do not crush, chew, or break the extended-release tablet.

What should I do in case of an overdose?

In case of overdose, seek medical help or contact a Poison Control Center immediately.

Packaging Info

Below are the non-prescription pack sizes of Mucinex Dm (guaifenesin and dextromethorphan hydrobromide). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucinex Dm.
Details

Drug Information (PDF)

This file contains official product information for Mucinex Dm, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Description

Mucinex® DM is an extended-release formulation containing 1200 mg of guaifenesin and 60 mg of dextromethorphan HBr per tablet. This product is classified as an expectorant and cough suppressant, designed to provide relief for up to 12 hours. The formulation works by thinning and loosening mucus while controlling cough. Each package contains 14 extended-release tablets, offering both immediate and extended release of the active ingredients. The National Drug Code (NDC) for this product is 63824-072-35.

Uses and Indications

This drug is indicated for the relief of cough associated with minor throat and bronchial irritation, which may occur due to the common cold or inhaled irritants. It assists in loosening phlegm (mucus) and thinning bronchial secretions, thereby facilitating the expulsion of bothersome mucus and enhancing the productivity of coughs.

Additionally, this drug temporarily alleviates the intensity of coughing and reduces the impulse to cough, which may aid in promoting sleep.

There are no teratogenic or nonteratogenic effects associated with this drug.

Dosage and Administration

The extended-release tablet should be taken with a full glass of water. It is important to note that the tablet must not be crushed, chewed, or broken, as this may affect the release mechanism of the medication.

For adults and children aged 12 years and older, the recommended dosage is one extended-release tablet every 12 hours. The total daily dosage should not exceed two extended-release tablets within a 24-hour period. This medication can be administered without regard to the timing of meals.

Use of this product is not recommended for children under 12 years of age.

Contraindications

Use of this product is contraindicated in the following situations:

  • Children under 12 years of age.

  • Patients currently taking a prescription monoamine oxidase inhibitor (MAOI) or those who have discontinued MAOI therapy within the past 2 weeks. MAOIs are commonly prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. If there is uncertainty regarding the presence of an MAOI in a prescription medication, consultation with a healthcare professional is advised.

Warnings and Precautions

The use of this product is contraindicated in children under 12 years of age. Additionally, it must not be administered to individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within two weeks of discontinuing such medication. MAOIs are commonly prescribed for depression, psychiatric or emotional conditions, and Parkinson's disease. If there is uncertainty regarding the presence of an MAOI in a prescription medication, it is imperative to consult a healthcare professional, such as a doctor or pharmacist, prior to use.

Healthcare professionals should exercise caution and advise patients to seek medical advice before using this product if they have a persistent or chronic cough, particularly those associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, patients should be advised to consult a healthcare provider if their cough is accompanied by excessive phlegm (mucus).

In the event of an overdose, immediate medical assistance should be sought, or the local Poison Control Center should be contacted without delay.

Patients should be instructed to discontinue use and consult a healthcare professional if their cough persists for more than seven days, recurs, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Side Effects

Patients should be aware of the following adverse reactions associated with the use of this product.

Serious adverse reactions may occur, and it is crucial to discontinue use and consult a healthcare professional if a cough persists for more than 7 days, recurs, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

The product is contraindicated for use in children under 12 years of age and should not be taken concurrently with prescription monoamine oxidase inhibitors (MAOIs) or within two weeks of stopping such medications. Patients are advised to consult a doctor or pharmacist if they are uncertain whether their prescription includes an MAOI.

Additionally, patients with persistent or chronic coughs, such as those associated with smoking, asthma, chronic bronchitis, or emphysema, should seek medical advice before using this product. Coughs accompanied by excessive phlegm (mucus) also warrant consultation with a healthcare provider.

For pregnant or breastfeeding individuals, it is recommended to consult a health professional prior to use. In the event of an overdose, immediate medical assistance should be sought, or contact with a Poison Control Center is advised.

Drug Interactions

The concomitant use of this product with prescription monoamine oxidase inhibitors (MAOIs) is contraindicated. MAOIs are typically prescribed for the treatment of depression, psychiatric or emotional conditions, and Parkinson's disease. Patients should not take this product while on MAOIs or for a minimum of two weeks following the discontinuation of an MAOI.

It is essential for patients to consult with a healthcare professional, such as a doctor or pharmacist, if there is any uncertainty regarding the presence of an MAOI in their current prescription medications before initiating treatment with this product.

Packaging & NDC

Below are the non-prescription pack sizes of Mucinex Dm (guaifenesin and dextromethorphan hydrobromide). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucinex Dm.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For adolescents aged 12 years and older, the recommended dosage is 1 tablet every 12 hours, with a maximum of 2 tablets in a 24-hour period. Caution is advised when prescribing to younger populations, as safety and efficacy have not been established in children under 12 years.

Geriatric Use

Elderly patients may not have specific geriatric use information available in the prescribing information. The absence of recommended age considerations, dosage adjustments, safety concerns, or special precautions indicates that the data does not highlight any particular risks or modifications for this population.

Healthcare providers should remain vigilant and consider individual patient factors when prescribing to geriatric patients, as the lack of specific guidance does not preclude the need for careful monitoring and assessment of treatment efficacy and safety in this demographic.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. The potential risks and benefits must be carefully weighed, as the effects on fetal outcomes and lactation are not fully established. It is essential for women of childbearing potential to seek medical advice to ensure safe use during pregnancy and lactation.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no available data on the excretion of this drug in human breast milk or its effects on breastfed infants. Therefore, caution is recommended when administering this medication to lactating individuals.

Renal Impairment

Patients with renal impairment have not been specifically addressed in the available prescribing information. There are no dosage adjustments, special monitoring requirements, or safety considerations outlined for individuals with reduced kidney function. Healthcare professionals should exercise caution and consider the lack of data when prescribing to this patient population.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in clinical trials for this medication. Consequently, there is no available information regarding dosage adjustments, special monitoring requirements, or precautions for individuals with compromised liver function. It is recommended that healthcare providers exercise caution when prescribing this medication to patients with hepatic impairment, given the lack of data on its safety and efficacy in this population. Regular monitoring of liver function may be warranted based on clinical judgment.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay. Prompt intervention is crucial to mitigate potential adverse effects associated with the overdose.

Healthcare professionals should be vigilant in monitoring for symptoms that may arise from an overdose. While specific symptoms are not detailed in the provided information, it is essential to remain alert to any signs of toxicity or adverse reactions that may occur.

Management of an overdose should be guided by clinical judgment and may involve supportive care, symptomatic treatment, and specific interventions as deemed necessary based on the patient's condition and the substance involved. Continuous assessment and monitoring of the patient are recommended to ensure appropriate management and to address any complications that may arise.

Nonclinical Toxicology

No information is available regarding teratogenic or non-teratogenic effects. Additionally, there is no data provided concerning nonclinical toxicology, animal pharmacology, or toxicology.

Postmarketing Experience

Reports of side effects have been received through voluntary submissions and surveillance programs. Individuals are encouraged to report any adverse events to the designated phone number provided for this purpose.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion. In the event of an overdose, patients should be instructed to seek medical help or contact a Poison Control Center immediately.

It is important to inform patients that this product is not recommended for use in children under 12 years of age. Additionally, patients should be cautioned against using this medication if they are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have stopped taking an MAOI within the last two weeks. If patients are uncertain whether their prescription includes an MAOI, they should be encouraged to consult with their doctor or pharmacist prior to use.

Patients should be advised to discontinue use and consult a doctor if their cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious illness.

While using this product, patients must be reminded not to exceed the recommended dosage. Furthermore, healthcare providers should encourage patients to seek medical advice before using this medication if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema, or if their cough is accompanied by excessive phlegm (mucus).

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It is essential to store the product at a controlled temperature range of 20-25°C (68-77°F) to maintain its integrity and efficacy. Proper storage conditions should be ensured to prevent any degradation of the product.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Mucinex Dm, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It was built from the FDA Structured Product Label (DailyMed) for Mucinex Dm, retrieved by a validated AI data-extraction workflow.

All FDA-listed dosage forms and strengths are shown in the Packaging & NDC Codes section above. Regulatory status appears in the Summary Information panel above and was verified in the FDA National Drug Code directory and the NSDE NDC Directory daily file.

Note: an automated daemon monitors NSDE checksums; when the record for this NDC changes, the new file is pulled instantly and this page is refreshed.

No human clinician has reviewed this version.

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Orange Book data shown on this page are limited to Regulatory Status (Rx), Established Pharmacologic Class (EPC), and Mechanism of Action (MoA).

Regulatory data notice: Information on this page is reproduced verbatim from FDA public databases (NSDE, Orange Book, Purple Book, DailyMed SPL). NDA/ANDA drugs are FDA-approved, BLA biologics are FDA-licensed. Inclusion alone does not guarantee current market availability or imply FDA endorsement.

Medical disclaimer: This AI-generated content is provided for educational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional for diagnosis or treatment decisions.