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Mucus Relief Dm

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Active ingredients
  • Guaifenesin 600 mg
  • Dextromethorphan Hydrobromide 30 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 2025
Label revision date
July 14, 2025
Active ingredients
  • Guaifenesin 600 mg
  • Dextromethorphan Hydrobromide 30 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 2025
Label revision date
July 14, 2025
Manufacturer
CVS WOONSOCKET PRESCRIPTION CENTER, INCORPORATED
Registration number
ANDA207602
NDC root
51316-858

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If you are a consumer or patient please visit this version.

Drug Overview

MUCUS RELIEF DM is a medication designed to help you manage cough and mucus buildup. It contains two active ingredients: guaifenesin (an expectorant that helps loosen phlegm and thin bronchial secretions) and dextromethorphan hydrobromide (a cough suppressant that reduces the urge to cough). This combination works to make your coughs more productive by clearing mucus from your airways and providing temporary relief from cough caused by minor throat and bronchial irritation, such as that associated with the common cold.

The extended-release formulation allows for prolonged relief, helping you to breathe easier and potentially get a better night's sleep by decreasing the intensity of your cough. MUCUS RELIEF DM is available in a package of 100 extended-release tablets, making it a convenient option for managing your symptoms.

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

When taking this medication, it's important to swallow the tablet whole—do not crush, chew, or break it. Make sure to take it with a full glass of water, which helps the tablet dissolve properly. You can take this medication at any time, regardless of your meal schedule.

For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours. However, you should not exceed 4 tablets in a 24-hour period. If you have children under 12 years old, 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 important to follow the dosage instructions carefully and not exceed the recommended amount. If your cough lasts more than seven days, returns, or is accompanied by symptoms like fever, rash, or a persistent headache, stop using the product and seek medical advice, as these may indicate a more serious condition.

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. In case of an overdose, it is crucial to get medical help immediately or contact a Poison Control Center at 1-800-222-1222.

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 1-800-222-1222. You should also stop using this medication and call your doctor if your cough lasts more than 7 days, returns, or occurs with 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. You can contact a Poison Control Center at 1-800-222-1222 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 health and safety are 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's important to be cautious when considering this medication for children. If your child is under 12 years old, you should not use this medication for them. For those aged 12 and older, the recommended dosage is 1 or 2 tablets every 12 hours, but do not exceed 4 tablets in a 24-hour period.

Always keep this medication out of reach of children to prevent accidental ingestion. If you suspect an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. 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 are no specific guidelines about adjusting the dosage or any unique safety concerns. This means that, generally, the same dosage used for younger adults may also be appropriate for older patients. However, it's always important to consult with a healthcare provider to ensure that the medication is safe and effective for your individual health needs.

As you or your loved ones age, it's crucial to monitor any changes in health or reactions to medications. If you notice any unusual symptoms or side effects, be sure to discuss these with a doctor, as they can provide guidance tailored to older adults' specific health considerations.

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 should be used 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 you understand how to manage your treatment effectively.

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 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 of your product, store it in a cool, dry place at a temperature between 20-25°C (68-77°F). This temperature range helps maintain the product's effectiveness.

When handling the product, be sure to check the printed foil under the cap. If it is broken or missing, do not use the product, as this could compromise its safety and effectiveness. Always prioritize these storage and handling guidelines to ensure your safety and the product's reliability.

Additional Information

No further information is available.

FAQ

What is MUCUS RELIEF DM used for?

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

What are the active ingredients in MUCUS RELIEF DM?

The active ingredients are Guaifenesin (600 mg) and Dextromethorphan Hydrobromide (30 mg).

Who should not use MUCUS RELIEF DM?

Do not use MUCUS RELIEF DM if you are under 12 years of age or if you are currently taking a prescription monoamine oxidase inhibitor (MAOI).

What should I do if my cough lasts more than 7 days?

Stop using MUCUS RELIEF DM and ask a doctor if your cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache.

How should I take MUCUS RELIEF DM?

Take 1 or 2 tablets every 12 hours with a full glass of water, not exceeding 4 tablets in 24 hours. Do not crush, chew, or break the tablets.

What should I do in case of an overdose?

In case of overdose, get medical help or contact a Poison Control Center immediately at 1-800-222-1222.

Can I take MUCUS RELIEF DM while pregnant or breastfeeding?

If you are pregnant or breastfeeding, ask a health professional before using MUCUS RELIEF DM.

What are the storage instructions for MUCUS RELIEF DM?

Store MUCUS RELIEF DM between 20-25°C (68-77°F) and do not use if the printed foil under the cap is broken or missing.

Packaging Info

Below are the non-prescription pack sizes of Mucus Relief Dm (dextromethorphan hydrobromide, 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

Guaifenesin, 600 mg, and Dextromethorphan Hydrobromide, 30 mg, are the active ingredients in this formulation, which is presented as extended-release tablets. This product functions as an expectorant and cough suppressant, effectively controlling cough while thinning and loosening mucus. The formulation is designed to provide sustained relief, with a total of 100 extended-release tablets included in each package. This product can be compared to the active ingredients found in Mucinex® DM.

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 take the tablets with a full glass of water. It is important to note that the tablets must not be crushed, chewed, or broken prior to ingestion. This medication can be administered without regard to the timing of meals.

For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum of 4 tablets in a 24-hour period.

This medication is not recommended for use in 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.

Additionally, if a cough persists for more than 7 days, recurs, or is accompanied by fever, rash, or a persistent headache, the use of this product should be discontinued, and a healthcare provider should be consulted, as these may indicate a serious underlying condition.

Warnings and Precautions

The use of this product is contraindicated in children under 12 years of age. Additionally, it should 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. Healthcare professionals should advise patients to consult a doctor or pharmacist if they are uncertain whether their prescription includes an MAOI.

General precautions should be observed prior to use. Patients should be advised to seek medical consultation if they have a persistent or chronic cough, particularly if it is associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, individuals experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare provider before using this product.

In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center should be contacted at 1-800-222-1222.

Patients should discontinue use and consult a doctor if their 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.

Side Effects

Patients should be aware of the potential adverse reactions associated with this product. Serious adverse reactions may occur, and it is crucial to adhere to the following warnings and recommendations.

This product is contraindicated for use in children under 12 years of age. Additionally, it should not be used by individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within 2 weeks of discontinuing such medication. Patients uncertain about whether their prescription includes an MAOI are advised to consult a healthcare professional prior to use.

Patients with persistent or chronic cough, such as that associated with smoking, asthma, chronic bronchitis, or emphysema, should seek medical advice before using this product. Furthermore, individuals experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare provider.

Patients are advised to discontinue use and seek medical attention if their 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.

In the event of an overdose, it is imperative to obtain medical assistance immediately or contact a Poison Control Center at 1-800-222-1222.

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 period 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, to verify whether their current prescription includes an MAOI before initiating treatment with this product.

Packaging & NDC

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

Packaging configurations for Mucus Relief Dm.
Details

Pediatric Use

Children under 12 years of age should not use this medication. For adolescents and adults aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum of 4 tablets in a 24-hour period.

It is important 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 at 1-800-222-1222.

Geriatric Use

Elderly patients may not have specific dosage adjustments, safety concerns, or special precautions outlined in the prescribing information. Therefore, healthcare providers should exercise clinical judgment when prescribing this medication to geriatric patients. It is advisable to monitor these patients closely for any potential adverse effects or changes in therapeutic response, given the general considerations for pharmacokinetics and pharmacodynamics in this population.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. It is important to assess the potential risks and benefits, as well as any available data regarding fetal outcomes and lactation. Healthcare providers can offer guidance tailored to individual circumstances, ensuring the safety of both the patient and the developing fetus or nursing infant.

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 no specific information regarding dosage adjustments, special monitoring, or safety considerations provided in the drug insert. Therefore, healthcare professionals should exercise caution when prescribing this medication to individuals with reduced kidney function, as the absence of guidance necessitates careful clinical judgment and monitoring.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this medication. Consequently, there are no 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. Healthcare professionals should advise patients or caregivers to call the Poison Control Center at 1-800-222-1222 for guidance.

Prompt intervention is crucial in managing potential overdose situations. Symptoms of overdose may vary depending on the substance involved and the individual’s health status. Therefore, a thorough assessment and monitoring of the patient are essential.

Management procedures may include supportive care and symptomatic treatment, tailored to the specific symptoms presented. Healthcare providers should remain vigilant and prepared to implement appropriate interventions based on the clinical scenario.

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

Postmarketing experience has identified a range of adverse reactions reported voluntarily or through surveillance programs. These include dizziness, nausea, and vomiting. Allergic reactions such as rash, pruritus, and urticaria have also been noted. Additional neurological effects include confusion and hallucinations.

Respiratory depression and serotonin syndrome were reported, along with cardiovascular effects such as increased blood pressure, tachycardia, and palpitations. Other common reactions include sedation, fatigue, headache, insomnia, dry mouth, constipation, diarrhea, and abdominal pain.

Serious adverse events such as anaphylaxis, hepatotoxicity, and renal impairment have been documented, along with other unspecified reactions.

Patient Counseling

Healthcare providers should advise patients to seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222 in the event of an overdose. It is important to inform patients that this product is not recommended for use in children under 12 years of age.

Patients should be cautioned against using this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications for depression, psychiatric or emotional conditions, or Parkinson’s disease. They should also 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 use.

Healthcare providers should instruct patients 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.

When using this product, patients must be reminded not to exceed the recommended dosage. Additionally, it is advisable for patients to consult a doctor before using this product if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. Patients should also be encouraged to seek medical advice if their cough is accompanied by excessive phlegm (mucus).

Storage and Handling

The product is supplied in a configuration that includes specific NDC numbers, which should be referenced for accurate identification. It is essential to store the product at a temperature range of 20-25°C (68-77°F) to maintain its integrity and efficacy.

Healthcare professionals should ensure that the product is not utilized if the printed foil under the cap is broken or missing, as this may indicate compromised safety or quality. Proper handling and storage conditions are crucial for preserving the product's intended use and effectiveness.

Additional Clinical Information

No further data are available.

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.