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Mucus Relief Dm Extended Release Caplets

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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
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2019
Label revision date
August 28, 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
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 28, 2025
Manufacturer
Walgreens
Registration number
ANDA209692
NDC root
0363-0733

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Drug Overview

Mucus Relief DM is a medication that combines two active ingredients: guaifenesin (600 mg) and dextromethorphan HBr (30 mg). It is classified as an expectorant and cough suppressant, designed to help you manage coughs and mucus. 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 when you're trying to sleep.

This medication is formulated as extended-release tablets, providing relief for up to 12 hours. It is effective for coughs caused by minor throat and bronchial irritation, such as those associated with the common cold or inhaled irritants.

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 in your stomach. 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 of age, please do not use this medication for them. Always follow these guidelines to ensure safe and effective use.

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, psychiatric conditions, or Parkinson's disease. If you have recently stopped taking an MAOI, wait at least two weeks before using this product. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist.

It's also important to follow the dosage instructions carefully and not exceed the recommended amount. Misusing this product can lead to serious health issues, including dependence (a condition where your body becomes reliant on a substance). Always prioritize your safety and well-being 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 are unsure whether your medication contains an MAOI, consult your doctor or pharmacist.

If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, you should stop using the medication and seek medical advice, as these could indicate a more serious condition. Additionally, consult your doctor before using this product if you have a chronic cough related to smoking, asthma, chronic bronchitis, or emphysema, or if your cough produces excessive mucus.

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 psychiatric 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. You should not use it for anyone under 12 years of age. For those who are 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.

Always consult with a healthcare professional before giving any medication to your child, especially if they are under the age limit. Keeping your child safe and healthy is the top priority.

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

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

Hepatic Impairment

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

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 crucial to be aware of potential interactions when taking any medication. If you are currently using a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication often prescribed for depression, psychiatric conditions, or Parkinson's disease, you should not take 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 your medications and any lab tests with your healthcare provider to ensure your safety and the effectiveness of your treatment. This conversation can help prevent any harmful interactions and support your overall health.

Storage and Handling

To ensure the safety and effectiveness of your product, store it in a cool, dry place at a temperature between 20º to 25ºC (68º to 77ºF). It's important to check the packaging before use; do not use the product if the blister unit is torn, broken, or shows any signs of tampering, as this could compromise its safety.

Additionally, keep the outer carton, as it contains important warnings and product information that you may need to refer to later. Following these guidelines will help you handle the product safely and effectively.

Additional Information

You should take this medication as directed. Adults and children aged 12 and older can take 1 or 2 tablets every 12 hours, but do not exceed 4 tablets in a 24-hour period. Make sure to swallow the tablet whole with a full glass of water—do not crush, chew, or break it. This medication can be taken without regard to meal timing. If you are under 12 years old, do not use this product.

If you are pregnant or breastfeeding, consult a healthcare professional before using this medication. In the event of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222.

FAQ

What is Mucus Relief DM?

Mucus Relief DM is an extended-release tablet that contains GUAIFENESIN 600 mg and DEXTROMETHORPHAN HBr 30 mg, classified as an expectorant and 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 is the recommended dosage for adults?

Adults and children 12 years and older should take 1 or 2 tablets every 12 hours, not exceeding 4 tablets in 24 hours.

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 with food?

Yes, Mucus Relief DM can be taken without regard for the timing of meals.

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.

Is it safe to use Mucus Relief DM during pregnancy or breastfeeding?

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

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)

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.

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

Dosage and Administration

Patients should take the tablets whole, without crushing, chewing, or breaking them. It is recommended to administer the tablets with a full glass of water. This medication can be taken 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 indicated 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. Due to the potential for serious interactions, it is essential to consult a healthcare professional if there is uncertainty regarding the presence of an MAOI in any prescription medication.

Additionally, it is advised not to exceed the recommended dosage while using this product.

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. If there is uncertainty regarding the presence of an MAOI in a prescription medication, it is imperative to consult a healthcare professional, such as a doctor or pharmacist, prior to use.

Healthcare professionals should exercise caution and advise patients to seek medical consultation before using this product if they have a persistent or chronic cough, particularly those associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, patients 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 healthcare professional 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, particularly in specific populations. The product is contraindicated for use in children under 12 years of age and should not be used concurrently with prescription monoamine oxidase inhibitors (MAOIs) or within two weeks of discontinuing such medications. Patients are advised to consult a healthcare professional if they are uncertain whether their prescription includes an MAOI.

Common adverse reactions may include a persistent cough that lasts more than seven days, recurs, or is accompanied by fever, rash, or a persistent headache. These symptoms could indicate a serious underlying condition, and patients should seek medical advice if they experience them.

Additionally, patients should consult a healthcare provider prior to use if they have a persistent or chronic cough due to smoking, asthma, chronic bronchitis, or emphysema, or if their cough is accompanied by excessive phlegm (mucus). Monitoring for these conditions is essential to ensure safe and effective use of the product.

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 includes 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 use this medication. For adolescents 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. Caution is advised when prescribing to younger populations, as safety and efficacy have not been established in children under 12 years.

Geriatric Use

There is no specific information regarding the use of this medication in geriatric patients, including dosage adjustments, safety concerns, or special precautions. Healthcare providers should exercise caution when prescribing this medication to elderly patients, as individual responses may vary. Monitoring for potential adverse effects and therapeutic efficacy is recommended in 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 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 insert. Therefore, healthcare professionals should exercise caution when prescribing this medication to individuals with reduced kidney function, as the lack of data 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 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. The national Poison Control Center can be reached at 1-800-222-1222.

Healthcare professionals should be aware that timely intervention is crucial in managing 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. It is recommended that healthcare providers remain vigilant and prepared to implement appropriate interventions based on the clinical presentation of the patient.

Nonclinical Toxicology

No teratogenic or non-teratogenic effects were identified in the nonclinical studies. Additionally, there are no findings related to animal pharmacology and toxicology. The available data does not indicate any significant toxicological concerns in the evaluated nonclinical studies.

Postmarketing Experience

No postmarketing experience details are provided in the insert.

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 taken one within the last 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 not to exceed the recommended dosage. Additionally, healthcare providers should advise 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 tamper-evident blister unit. It is essential to inspect the blister unit prior to use; do not use if the unit is torn, broken, or shows any signs of tampering.

For optimal storage, the product should be maintained at a temperature range of 20º to 25ºC (68º to 77ºF). It is advisable to keep the outer carton for complete warnings and product information.

Additional Clinical Information

Patients should be advised on the proper administration of the medication, which includes taking the tablet whole with a full glass of water and not crushing, chewing, or breaking it. The medication can be taken without regard to meal timing. 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. Use is not recommended for children under 12 years of age.

Clinicians should counsel patients who are pregnant or breastfeeding to consult a health professional before use. In the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately at 1-800-222-1222. No additional information is available regarding laboratory tests, abuse potential, 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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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.