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Mucus Relief Dm

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Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2025
Label revision date
December 30, 2025
Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2025
Label revision date
December 30, 2025
Manufacturer
Chain Drug Marketing Association, Inc.
Registration number
M012
NDC root
83324-323

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Drug Overview

QC® QUALITY CHOICE Maximum Strength Mucus Relief DM is an expectorant and cough oral solution designed for individuals aged 12 years and older. This berry-flavored liquid 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. By doing so, it aids in clearing the bronchial passageways of bothersome mucus, making coughs more productive.

This medication temporarily relieves cough caused by minor throat and bronchial irritation, which can occur with the common cold or from inhaled irritants. It also helps reduce the intensity of coughing and can alleviate the impulse to cough, making it easier for you to get to sleep.

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 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 also helps reduce the intensity of your cough and can 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 dosage instructions carefully to ensure your safety and effectiveness of the medication. You should not take more than the directed amount, and make sure not to exceed 6 doses within a 24-hour period. Always use the dose cup that comes with the medication for accurate measurement.

For adults and children aged 12 years and older, the recommended dose is 20 mL every 4 hours. However, if you are caring for children under 12 years old, this medication is not suitable for them, so please do not use it. If you have any questions or need further guidance, consult your doctor.

What to Avoid

It's important to be cautious when considering this medication. You should not use it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which are specific medications often prescribed for depression, psychiatric conditions, or Parkinson’s disease. 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.

Taking this medication while on an MAOI can lead to serious health risks, so it's crucial to follow these guidelines to ensure your safety.

Side Effects

You should be aware of some important warnings and considerations when using this medication. Do not take it if you are currently on a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression or certain other conditions, or for two weeks after stopping an MAOI. If you're unsure whether your medication contains an MAOI, consult your doctor or pharmacist.

Before using this product, it's advisable to speak with a 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 your cough lasts more than a week, keeps coming back, or is accompanied by a fever, rash, or persistent headache, stop using the medication and consult a doctor, as these may indicate a more serious issue. If you are pregnant or breastfeeding, please consult a healthcare professional before use. Always keep this medication out of reach of children, and in case of overdose, seek medical help immediately or contact a Poison Control Center.

Warnings and Precautions

You should not use this product 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.

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 your cough lasts more than a week, keeps coming back, or is accompanied by a fever, rash, or persistent headache, stop using the product and contact your doctor, as these may be signs of a more serious issue.

In the event of an overdose, seek emergency medical help or contact a Poison Control Center immediately. Your safety is important, so please take these precautions seriously.

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 symptoms that are more severe than typical side effects.

Always err on the side of caution—if you think you or someone else may have taken too much of a medication, don’t wait for symptoms to appear. Getting prompt assistance can be vital for safety and recovery.

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 using this medication for children. If your child is under 12 years old, you should not use this product. For those aged 12 and older, the recommended dosage is 20 mL taken every 4 hours, using the dosing cup provided.

Always keep this medication out of reach of children to prevent accidental ingestion. In the event of an overdose, seek medical help immediately or contact a Poison Control Center for assistance. Your child's safety is the top priority, so please follow these guidelines carefully.

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, it’s important to consult with a healthcare provider before starting the medication. 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 you have renal impairment (kidney issues).

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 lab tests you may be undergoing. This way, you can receive the best possible care tailored to your needs.

Storage and Handling

To ensure the best performance of your product, store it at a temperature of 25°C (77°F). It can safely be kept in a range between 15°C and 30°C (59°F to 86°F) for short periods. Always check the expiration date on the package and use the product before this date to guarantee its effectiveness.

When handling the product, make sure to do so with clean hands and in a safe environment to maintain its integrity. Proper storage and careful handling are key to ensuring your product remains safe and effective for use.

Additional Information

You should take this medication orally, using the provided dosing cup. For adults and children aged 12 years and older, the recommended dose is 20 mL every 4 hours. However, it is important not to use this medication for children under 12 years of age.

If you are pregnant or breastfeeding, consult a healthcare professional before using this medication. Always keep it out of reach of children, and in the event of an overdose, seek medical help or contact a Poison Control Center immediately.

FAQ

What is QC® QUALITY CHOICE Maximum Strength Mucus Relief DM?

It is an expectorant and cough oral solution for ages 12 years and over, designed to help relieve cough and loosen mucus.

What are the active ingredients in this product?

The active ingredients are Dextromethorphan HBr, a cough suppressant, and Guaifenesin, an expectorant.

How does this medication work?

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

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

The recommended dosage is 20 mL in the dosing cup provided every 4 hours, not to exceed 6 doses in 24 hours.

Are there any warnings for this medication?

Do not use if you are taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI. 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, get medical help or contact a Poison Control Center immediately.

Is it safe to use during pregnancy or breastfeeding?

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

What should I do if my cough persists?

Stop use and consult a doctor if your cough persists for more than 1 week, tends to recur, or is accompanied by a fever, rash, or persistent headache.

How should I store this medication?

Store at 25°C (77°F), with permitted excursions between 15°-30°C (59°-86°F), and use by the expiration date on the package.

Packaging Info

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

Packaging configurations for Mucus Relief Dm.
Details

Drug Information (PDF)

This file contains official product information for 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 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 assist patients in achieving restful sleep.

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

Dosage and Administration

Patients should adhere strictly to the recommended dosage and administration guidelines. The maximum dosage should not exceed the directed amount, and no more than 6 doses should be taken within a 24-hour period.

The dosing should be performed using only the dose cup provided with the medication. For adults and children aged 12 years and older, the recommended dose is 20 mL, administered every 4 hours as needed. It is important to note that this medication is not indicated for use in children under 12 years of age.

Healthcare professionals should ensure that patients understand these guidelines to promote safe and effective use of the medication.

Contraindications

Use of this product is contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications for depression, psychiatric or emotional conditions, or Parkinson’s disease. Additionally, use is contraindicated for a period of 2 weeks following the discontinuation of an MAOI. Due to the potential for serious interactions, patients should consult a healthcare professional if uncertain whether their prescription medication contains an MAOI.

Warnings and Precautions

Patients should not use this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications prescribed for depression, psychiatric or emotional conditions, or Parkinson’s disease. Additionally, the product should not be used for at least two weeks following the discontinuation of an MAOI. If there is uncertainty regarding whether a prescription medication contains an MAOI, it is imperative to consult a healthcare professional, such as a doctor or pharmacist, 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 if it is associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, patients with a cough that produces excessive phlegm (mucus) should also consult a healthcare provider before use.

Patients are instructed to discontinue use and contact their healthcare provider if the cough persists for more than one week, recurs, or is accompanied by additional symptoms such as fever, rash, or a persistent headache. These symptoms may indicate a more serious underlying condition that requires medical evaluation.

In the event of an overdose, it is critical to seek immediate medical assistance or contact a Poison Control Center without delay. Prompt action is essential to ensure patient safety and appropriate management of the situation.

Side Effects

Patients should be aware of the potential adverse reactions associated with the use of this product. Serious adverse reactions may occur, particularly in individuals who are currently taking or have recently discontinued a prescription monoamine oxidase inhibitor (MAOI). It is contraindicated to use this product if a patient is taking an MAOI or has stopped taking one within the past two weeks. Patients are advised to consult a healthcare professional if they are uncertain whether their prescription medication contains an MAOI.

Common adverse reactions may include persistent or chronic cough, especially in patients with underlying conditions such as smoking, asthma, chronic bronchitis, or emphysema. Additionally, patients experiencing a cough accompanied by excessive phlegm (mucus) should seek medical advice before using this product.

Patients are instructed to discontinue use and consult a healthcare provider if their cough persists for more than one week, recurs, or is accompanied by symptoms such as fever, rash, or persistent headache, as these may indicate a serious underlying condition.

For pregnant or breastfeeding individuals, it is recommended to seek guidance from a health professional prior to use. Furthermore, this product should be kept out of reach of children, and in the event of an overdose, immediate medical assistance should be sought or contact with a Poison Control Center should be made.

Drug Interactions

There are currently no documented drug interactions associated with the use of 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 Mucus Relief Dm (dextromethorphan hbr, guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief 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 20 mL, administered every 4 hours using the dosing cup provided.

It is essential to keep this medication out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or contact a Poison Control Center without delay.

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 currently no specific data available regarding the excretion of this medication in breast milk or its effects on breastfed infants. Therefore, caution is recommended when considering the use of this medication during lactation.

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 individuals 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 medication. 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 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 for symptoms that may arise from an overdose, although specific symptoms are not detailed in the provided information. The management of an overdose typically involves supportive care and symptomatic treatment, tailored to the individual patient's needs.

It is essential for healthcare providers to remain alert and prepared to implement appropriate management strategies in response to an overdose situation.

Nonclinical Toxicology

If pregnant or breast-feeding, it is advised to consult a health professional before 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

Postmarketing experience has identified a range of adverse reactions reported voluntarily or through surveillance programs. These include allergic reactions such as rash, pruritus, and urticaria. Neurological effects reported include dizziness, somnolence, confusion, hallucinations, and agitation. Gastrointestinal disturbances such as nausea, vomiting, constipation, and dry mouth have also been noted.

Cardiovascular effects include increased blood pressure, tachycardia, and palpitations. Additionally, respiratory depression and serotonin syndrome have been reported. There are instances of hepatic dysfunction and renal impairment. Anaphylaxis and other hypersensitivity reactions have been documented as well. Other central nervous system effects and various adverse reactions not specifically listed may also occur.

Patient Counseling

Healthcare providers should advise patients to seek immediate medical assistance or contact a Poison Control Center in the event of an overdose. It is crucial to inform patients that this product should not be used concurrently with prescription monoamine oxidase inhibitors (MAOIs), which are medications prescribed for depression, psychiatric or emotional conditions, or Parkinson’s disease. Patients should be instructed to refrain from using this product for at least two weeks after discontinuing an MAOI. If patients are uncertain whether their prescription medication contains an MAOI, they should be encouraged to consult with their doctor or pharmacist prior to using this product.

Patients should also be informed to discontinue use and consult a healthcare professional if their cough persists for more than one week, recurs, or is accompanied by symptoms such as fever, rash, or a persistent headache, as these may indicate a more serious underlying condition. Additionally, healthcare providers should 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, 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 upon request. It should be stored at a controlled room temperature of 25°C (77°F). Temporary excursions are permissible within the range of 15° to 30°C (59° to 86°F). It is essential to adhere to the expiration date indicated on the package to ensure product efficacy and safety.

Additional Clinical Information

The medication is administered orally, with a recommended dosage of 20 mL every 4 hours for adults and children aged 12 years and older. It is contraindicated for children under 12 years of age. Clinicians should advise patients who are pregnant or breastfeeding to consult a health professional prior to use. Additionally, it is important to keep the medication out of reach of children, and in the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately.

No further information is available regarding laboratory tests, abuse potential, or postmarketing experience.

Drug Information (PDF)

This file contains official product information for 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 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.