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Maximum Strength Mucus Relief Dm

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This product has been discontinued

Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2017
Label revision date
September 12, 2025
Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2017
Label revision date
September 12, 2025
Manufacturer
CARDINAL HEALTH
Registration number
M012
NDC root
70000-0129

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Drug Overview

Mucus Relief DM is a maximum strength formula designed to help you manage cough and chest congestion. It contains two active ingredients: dextromethorphan HBr, which acts as a cough suppressant, and guaifenesin, an expectorant that helps loosen phlegm (mucus) and thin bronchial secretions. This combination works to relieve cough caused by minor throat and bronchial irritation, making your coughs more productive and helping you get a better night's sleep.

By thinning and loosening mucus, Mucus Relief DM helps clear your bronchial passageways, providing temporary relief from coughing and chest congestion. It is suitable for adults and children aged 12 and older, and is available in a 6 FL OZ (180 mL) bottle.

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 reduce the intensity of your cough and help lessen the urge to cough, making it easier for you to get a good night's sleep.

Dosage and Administration

It's important to follow the correct dosage when taking this medication to ensure your safety and effectiveness. For adults and children aged 12 years and older, you should take 20 mL every 4 hours, but remember not to exceed 6 doses in a 24-hour period. If you have a doctor’s instructions, be sure to follow those as well.

When measuring your dose, use only the dosing cup that comes with the medication. This ensures you get the right amount. Avoid using this dosing cup with any other products to prevent confusion or incorrect dosing. If you have children under 12 years of age, do not use this medication for them. Always prioritize safety and consult with a healthcare professional if you have any questions.

What to Avoid

You should avoid using this medication 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 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 current medication includes an MAOI, please consult your doctor or pharmacist.

It's also important to follow the dosage instructions carefully and not exceed the recommended amount. Taking more than directed can lead to serious health issues. Always prioritize your safety and well-being by adhering to these guidelines.

Side Effects

You should be aware of some important warnings and considerations when using this product. It is not recommended for children under 12 years old, and you should avoid it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one in the last 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.

While using this medication, do not exceed the recommended dosage. If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, stop using it and seek medical advice, as these may indicate a more serious condition. If you are pregnant or breastfeeding, it's best to consult a healthcare professional before use. Always keep this product out of reach of children, and in case of an overdose, contact medical help or a Poison Control Center immediately at 1-800-222-2222.

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 persistent cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus. If you experience an overdose, seek emergency medical help immediately or contact a Poison Control Center at 1-800-222-2222. 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 health issue.

Overdose

If you suspect an overdose, it’s crucial to seek medical help immediately. You can contact a Poison Control Center at 1-800-222-2222 for guidance. Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing.

Always err on the side of caution—if you notice any concerning symptoms or if you’re unsure, don’t hesitate to get help right away. Your safety is the top priority.

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 is important to note that this medication should not be used in children under 12 years of age. If you are a parent or caregiver, please ensure that your child meets this age requirement before considering this treatment. Always consult with a healthcare professional if you have any questions or concerns regarding the use of this medication for your child.

Geriatric Use

When it comes to using this medication in older adults, there is no specific information available about dosage adjustments, safety concerns, or special precautions. This means that if you or a loved one is an older adult considering this medication, it’s important to consult with a healthcare provider. They can help determine the best approach based on individual health needs and any other medications being taken. Always prioritize open communication with your healthcare team to ensure safe and effective treatment.

Renal Impairment

If you have kidney problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or safety considerations for your condition. This means that there are no tailored guidelines for how this medication may affect you if your kidneys are not functioning properly.

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your kidney health. They can help monitor your condition and make any necessary adjustments to your treatment plan.

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).

Before starting any new medication, including this one, you should discuss your liver health with your healthcare provider. They can help determine the best approach for your treatment and ensure your safety.

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications or tests you may be taking. While there are no specific drug interactions or laboratory test interactions noted for this medication, your healthcare provider can help ensure that everything you are taking works well together and is safe for you.

Always feel free to ask questions and share your complete list of medications and any tests you might be undergoing. This way, you can avoid any potential issues and ensure the best possible care for your health.

Storage and Handling

To ensure the best performance of your product, store it at room temperature. It's important to avoid refrigerating it, as this can affect its effectiveness. You will find a dosing cup included with your product, which is designed to help you measure the correct amount safely and accurately.

When handling the product, always use the dosing cup to ensure proper dosing. This will help you avoid any potential errors in measurement. Following these simple storage and handling guidelines will help you use the product safely and effectively.

Additional Information

You should take this medication orally. If you are pregnant or breastfeeding, it's important to consult with a healthcare professional before using it. Always keep this medication out of reach of children. In the event of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-2222 for assistance.

FAQ

What is Mucus Relief DM?

Mucus Relief DM is a maximum strength formula that contains Dextromethorphan HBr (a cough suppressant) and Guaifenesin (an expectorant) to help relieve cough and chest congestion.

Who can use Mucus Relief DM?

This product is intended for adults and children aged 12 years and older. It should not be used by children under 12 years of age.

How does Mucus Relief DM work?

It helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive and temporarily relieving cough due to minor throat and bronchial irritation.

What is the recommended dosage for adults?

Adults and children 12 years and older should take 20 mL every 4 hours, not exceeding 6 doses in a 24-hour period.

Are there any warnings associated with Mucus Relief DM?

Do not use if you are taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI. Also, consult a doctor if you have a persistent cough or cough with too much phlegm.

What should I do if I experience an overdose?

In case of overdose, seek medical help or contact a Poison Control Center immediately at 1-800-222-2222.

Can I use Mucus Relief DM if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, consult a health professional before using this product.

How should I store Mucus Relief DM?

Store Mucus Relief DM at room temperature and do not refrigerate.

Packaging Info

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

Packaging configurations for Maximum Strength Mucus Relief Dm.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

No description information is available for the drug.

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 aids in loosening phlegm (mucus) and thinning bronchial secretions, thereby facilitating the clearance of mucus from the bronchial passageways and making coughs more productive.

Additionally, this drug temporarily relieves the intensity of coughing and the impulse to cough, which may assist patients in achieving restful sleep.

No teratogenic or nonteratogenic effects have been reported.

Dosage and Administration

The maximum recommended dosage is 6 doses within a 24-hour period. Dosing should be measured exclusively with the dosing cup provided with the product; the use of this dosing cup with other products is not advised.

For adults and children aged 12 years and older, the recommended dose is 20 mL every 4 hours, as needed. It is imperative that individuals under 12 years of age do not use this product. Dosing should be adhered to as specified or as directed by a healthcare professional.

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 two weeks. It is essential to consult a healthcare professional if there is uncertainty regarding the presence of an MAOI in any prescription medication.

Additionally, the product should not be used in excess of the directed dosage.

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 prior to use.

Healthcare professionals should advise patients to seek medical guidance before using this product if they have a persistent or chronic cough, particularly those associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, individuals experiencing a cough accompanied by excessive phlegm (mucus) should also consult a physician prior to use.

In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center should be contacted at 1-800-222-2222.

Patients are advised to discontinue use and consult a healthcare provider 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 more 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 patients are advised to stop use and consult a healthcare professional if the cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms could indicate a serious underlying condition.

This product is contraindicated for use in children under 12 years of age and should not be used in conjunction with prescription monoamine oxidase inhibitors (MAOIs) or within 2 weeks of discontinuing such medications. Patients should consult a doctor or pharmacist if they are uncertain whether their prescription includes an MAOI.

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. Additionally, those experiencing coughs that produce excessive phlegm (mucus) should also consult a healthcare professional prior to use.

During the use of this product, it is crucial that patients adhere to the recommended dosage and not exceed the directed amount.

For pregnant or breastfeeding individuals, it is recommended to seek guidance from a healthcare professional before using this product.

In the event of an overdose, immediate medical assistance should be sought, or contact a Poison Control Center at 1-800-222-2222. It is important to keep this product out of reach of children to prevent accidental ingestion.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there is no information available regarding interactions with laboratory tests. As such, no specific recommendations for dosage adjustments or monitoring are warranted at this time.

Packaging & NDC

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

Packaging configurations for Maximum Strength Mucus Relief Dm.
Details

Pediatric Use

Pediatric patients under 12 years of age should not be administered this medication. There is insufficient data to support its safety and efficacy in this age group. Therefore, healthcare professionals are advised to avoid prescribing this treatment to children younger than 12 years.

Geriatric Use

Elderly patients may not have specific information regarding the use of this medication, including dosage adjustments, safety concerns, or special precautions. Therefore, healthcare providers should exercise caution when prescribing this medication to geriatric patients. It is advisable to monitor these patients closely for any adverse effects or changes in therapeutic response, given the lack of targeted data for this population.

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 considered in these populations to ensure the safety of both the mother and the fetus or infant.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is no specific data available regarding the excretion of this medication in 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 drug insert regarding dosage adjustments, special monitoring, or safety considerations. Therefore, healthcare professionals should exercise caution when prescribing this medication to patients with reduced kidney function, as the absence of detailed guidance necessitates careful clinical judgment. Regular monitoring of renal function may be advisable in these patients to ensure safety and efficacy.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this drug. Consequently, there are no established dosage adjustments, special monitoring requirements, or precautions outlined 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 prudent in these cases, although specific parameters are not defined in the prescribing information.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance. Healthcare professionals are advised to contact a Poison Control Center without delay. The national Poison Control Center can be reached at 1-800-222-2222 for guidance and support.

Prompt intervention is crucial in managing overdose situations to mitigate potential adverse effects. It is essential for healthcare providers to assess the patient's condition and initiate appropriate management protocols based on the specific circumstances of the overdose.

Nonclinical Toxicology

If pregnant or breastfeeding, it is advised to consult a health professional prior to use. No specific non-teratogenic effects have been identified in the available data. Additionally, there are no detailed findings regarding nonclinical toxicology or animal pharmacology and toxicology provided in the current information.

Postmarketing Experience

No specific postmarketing experience details are available. As such, there are no additional adverse events or rare case reports to summarize at this time.

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 immediately or contact a Poison Control Center at 1-800-222-2222.

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 taken one within the past 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 using this product.

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 condition. Furthermore, patients must be reminded to adhere strictly to the recommended dosage and not exceed the directed amount.

Healthcare providers should also recommend that patients seek medical advice before using this product if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. Lastly, patients should be encouraged to consult a doctor if their cough is accompanied by excessive phlegm (mucus).

Storage and Handling

The product is supplied in a configuration that includes a dosing cup. It should be stored at room temperature and must not be refrigerated to maintain its integrity and effectiveness. Proper handling is essential to ensure the product remains within the specified storage conditions.

Additional Clinical Information

The medication is administered orally. Clinicians should advise patients who are pregnant or breastfeeding to consult a health professional prior to use. It is essential to keep the medication out of reach of children. In the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately at 1-800-222-2222. No further information is available regarding laboratory tests, abuse potential, or postmarketing experiences.

Drug Information (PDF)

This file contains official product information for Maximum Strength Mucus Relief 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 Maximum Strength Mucus Relief 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.