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Mucus Relief Dm Extended Release Caplets

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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
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2019
Label revision date
August 20, 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
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2019
Label revision date
August 20, 2025
Manufacturer
Dolgencorp, Inc. (DOLLAR GENERAL & REXALL)
Registration number
ANDA209692
NDC root
55910-634

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Drug Overview

Mucus Relief DM is a maximum strength, extended-release tablet designed to help you manage cough and mucus. It contains two active ingredients: guaifenesin (an expectorant) and dextromethorphan HBr (a cough suppressant). Guaifenesin works by loosening phlegm and thinning bronchial secretions, making it easier to clear mucus from your airways. Dextromethorphan helps to temporarily relieve the urge to cough, which can be particularly helpful if you're trying to get some rest.

This medication is effective for relieving cough caused by minor throat and bronchial irritation, such as that which may occur with the common cold or from inhaled irritants. By controlling your cough and thinning mucus, Mucus Relief DM aims to make your coughs more productive and provide you with some comfort during your recovery.

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 one tablet every 12 hours. However, 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 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, psychiatric conditions, or Parkinson's disease. You must also wait at least two weeks after stopping an MAOI before using this product. If you're unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist.

It's important to follow the dosage instructions carefully and not exceed the recommended amount. Always prioritize your safety by adhering to these guidelines.

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 prescription monoamine oxidase inhibitor (MAOI) or have taken one in the past two weeks. If you're unsure whether your medication contains an MAOI, consult your doctor or pharmacist.

Before using this product, consult 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. You should stop using the medication and seek medical advice 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.

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 take overdosing seriously. If you notice any of these symptoms or have concerns about your health, don’t hesitate to reach out for 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 considering this medication for older adults, it's important to proceed with caution, as specific studies on geriatric use have not been conducted. You should be aware that older adults may have reduced kidney function, which can impact how the body processes the drug. This means that the medication might stay in the system longer, potentially increasing the risk of side effects.

Additionally, older adults may be more sensitive to these side effects. Because of this, it may be necessary to adjust the dosage based on individual health conditions and how the patient responds to the treatment. Always consult with a healthcare provider to ensure the safest and most effective use of the medication.

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 health situation. They can help monitor your kidney function 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 (issues with liver function).

Always consult your healthcare provider for personalized advice and to discuss any concerns you may have regarding your liver health and medication use. They can help ensure that you receive the safest and most effective treatment based on your individual needs.

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 20º to 25ºC (68º to 77ºF). This temperature range helps maintain the product's effectiveness and safety.

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.

Additional Information

You should take this medication orally. For adults and children aged 12 years and older, the recommended dose is 1 tablet every 12 hours, with a maximum of 2 tablets in a 24-hour period. If you are caring for a child under 12 years of age, do not use this medication for them. There are no additional details regarding laboratory tests, abuse potential, or patient counseling available at this time.

FAQ

What is Mucus Relief DM?

Mucus Relief DM is a maximum strength, extended-release tablet that contains Guaifenesin (1200 mg) as an expectorant and Dextromethorphan HBr (60 mg) as a cough suppressant.

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.

Who should not use Mucus Relief DM?

Do not use Mucus Relief DM for children under 12 years of age or if you are taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one in the last two weeks.

What are the dosage instructions for Mucus Relief DM?

Adults and children 12 years and older should take 1 tablet every 12 hours, not exceeding 2 tablets in 24 hours. Do not crush, chew, or break the tablet.

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

Stop using Mucus Relief DM and consult a doctor if your cough lasts more than 7 days, returns, or occurs with fever, rash, or persistent headache.

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

If you are pregnant or breastfeeding, consult a health professional before using Mucus Relief DM.

What should I do in case of an overdose?

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

What are the storage conditions for Mucus Relief DM?

Store Mucus Relief DM between 20º to 25ºC (68º to 77ºF).

Packaging Info

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

Packaging configurations for Mucus Relief Dm Extended Release Caplets.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

Guaifenesin, an expectorant, is present at a dosage of 1200 mg per tablet. Dextromethorphan HBr, a cough suppressant, is included at a dosage of 60 mg per tablet. This formulation is designed as extended-release tablets, allowing for prolonged therapeutic effects.

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.

No teratogenic or nonteratogenic effects have been reported.

Dosage and Administration

The tablet should be taken whole; it must not be crushed, chewed, or broken. It is recommended to administer the tablet with a full glass of water. This product can be taken without regard to the timing of meals.

For adults and children 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. The 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.

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

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 2 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 seek medical advice 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.

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 are advised to 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 the use of 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 in conjunction with prescription monoamine oxidase inhibitors (MAOIs), which are medications prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. Patients must refrain from using this product for at least two weeks after discontinuing an MAOI. If there is uncertainty regarding the presence of an MAOI in a prescription medication, patients are advised to consult a healthcare professional.

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

Patients are instructed to discontinue use and consult a doctor if their cough persists for more than seven days, recurs, or is accompanied by fever, rash, or a persistent headache. These symptoms may indicate a serious underlying condition that requires medical evaluation.

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

Packaging & NDC

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

Packaging configurations for Mucus Relief Dm Extended Release Caplets.
Details

Pediatric Use

Pediatric patients under 12 years of age should not be administered this medication. Safety and efficacy have not been established in this population, and use is contraindicated for children in this age group.

Geriatric Use

Caution should be exercised when administering this product to elderly patients, as geriatric use has not been specifically studied. It is important to consider that elderly patients may have reduced kidney function, which could impact the clearance of the drug.

Additionally, increased sensitivity to side effects may be observed in this population. Therefore, dosage adjustments may be necessary based on individual patient conditions and responses. Healthcare providers should closely monitor elderly patients for any adverse effects and adjust treatment as needed to ensure safety and efficacy.

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 may not have specific dosage adjustments, special monitoring, or safety considerations outlined in the drug insert. 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 is advisable to ensure patient safety and therapeutic efficacy.

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 overdose situations, and the appropriate medical response may vary depending on the specific circumstances and the substance involved. It is essential for healthcare providers to assess the patient's condition thoroughly and initiate supportive care as needed.

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 several adverse reactions reported voluntarily or through surveillance programs. These include dizziness, nausea, vomiting, rash, and allergic reactions, which may encompass anaphylaxis. Additionally, cases of hallucinations, confusion, agitation, increased heart rate, and respiratory depression have also been documented.

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) or have stopped taking an MAOI within the past two weeks. Healthcare providers should encourage patients to consult with a doctor or pharmacist if they are uncertain whether their prescription medication contains an MAOI.

Patients must be instructed to discontinue use and consult a healthcare professional 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 should be reminded to adhere strictly to the recommended dosage and not exceed the directed amount. Additionally, healthcare providers should advise patients to consult a doctor prior to use 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 various package configurations, with specific NDC numbers available for identification. It is essential to store the product at a controlled temperature range of 20º to 25ºC (68º to 77ºF) to maintain its integrity and efficacy. Proper storage conditions must be adhered to, ensuring that the product is kept within the specified temperature limits to prevent degradation.

Additional Clinical Information

The medication is administered orally. For adults and children aged 12 years and older, the recommended dosage is one tablet every 12 hours, with a maximum of two tablets within a 24-hour period. It is contraindicated for use in children under 12 years of age. No additional information is available regarding laboratory tests, abuse potential, patient counseling, or postmarketing experience.

Drug Information (PDF)

This file contains official product information for Mucus Relief Dm Extended Release Caplets, 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 Extended Release Caplets, 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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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.