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Mucus Dm

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Active ingredients
  • Guaifenesin 400 mg
  • Dextromethorphan Hydrobromide 20 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2025
Label revision date
March 6, 2026
Drug Information (PDF)
Prescribing information, PDF file
Active ingredients
  • Guaifenesin 400 mg
  • Dextromethorphan Hydrobromide 20 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2025
Label revision date
March 6, 2026
Manufacturer
Meijer Distribution, Inc.
Registration number
M012
NDC root
79481-5330
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info
Packaging & NDC Codes

If you are a healthcare professional or from the pharmaceutical industry please visit this version.

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

Drug Overview

Mucus DM is a medication that combines two active ingredients: dextromethorphan HBr, which acts as a cough suppressant, and guaifenesin, an expectorant. This medication is designed to help control coughing and make it easier to clear mucus from your airways. It works by loosening phlegm (mucus) and thinning bronchial secretions, which can help make your coughs more productive and relieve irritation in your throat and bronchial passages.

You may find Mucus DM helpful for temporarily relieving coughs associated with minor throat and bronchial irritation, such as those caused by the common cold. It can also reduce the intensity of your cough and help suppress the urge to cough, making it easier for you to get a good night's 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 coughs caused by minor throat and bronchial irritation, often associated with the common cold. It can also help reduce the intensity of your cough and lessen the urge to cough, which may help you get a better night's sleep.

Dosage and Administration

It's important to follow the dosage instructions carefully to ensure your safety. For adults and children aged 12 years and older, you should take 1 tablet every 4 hours as needed. However, make sure not to exceed 6 tablets in a 24-hour period.

If you have children under 12 years old, this medication is not recommended for them, so please avoid using it for that age group. Always remember to take the medication exactly as directed and never take more than the recommended amount.

What to Avoid

You should avoid using this product if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression, psychiatric conditions, or Parkinson’s disease. Additionally, you should not use this product for at least two weeks after stopping an MAOI. If you are unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist before using this product.

It's also important to follow the recommended dosage and not exceed it, as misuse can lead to serious health issues. Always prioritize your safety and well-being by adhering to these guidelines.

Side Effects

You should be aware of some important side effects and warnings associated with this medication. Do not use 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 your cough lasts more than a week, keeps coming back, or is accompanied by a fever, rash, or persistent headache, you should stop using the medication and consult a doctor, as these may indicate a more serious issue. Additionally, if you have a cough with excessive mucus or a chronic cough due to smoking, asthma, chronic bronchitis, or emphysema, it's important to talk to your doctor before using this medication. In case of an overdose, seek medical help or contact a Poison Control Center immediately.

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. Additionally, you should wait at least two weeks after stopping an MAOI before using this product. 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 cough that produces a lot of mucus or if you have a chronic cough due to smoking, asthma, chronic bronchitis, or emphysema. If you experience an overdose, seek emergency medical help or contact a Poison Control Center immediately.

You should stop using this product and call your doctor if your cough lasts more than a week, keeps coming back, or is accompanied by a fever, rash, or persistent headache, as these may indicate a more serious health issue.

Overdose

If you suspect an overdose, it’s crucial to seek medical help immediately or contact a Poison Control Center. Signs of an overdose can vary, but they may include unusual symptoms that are more severe than what you would typically experience with the medication.

Don’t wait for symptoms to worsen; getting prompt assistance can be vital. Always keep emergency contact numbers handy and be prepared to provide information about the medication involved and the amount taken. Your safety is the top priority, so don’t hesitate to reach out for help.

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 one tablet every four hours, but make sure they do not exceed six tablets in a 24-hour period.

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

Geriatric Use

While there is no specific information available about the use of this medication in older adults, it’s important to approach any new treatment with caution. Since older adults may have different health needs and may be taking multiple medications, it’s always a good idea to consult with a healthcare provider before starting any new medication. They can help ensure that the treatment is safe and appropriate for your individual health situation.

If you or a loved one is an older adult, be sure to discuss any concerns about potential side effects or interactions with other medications you may be taking. Your healthcare provider can provide guidance tailored to your specific needs.

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 (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’s okay if the temperature occasionally varies between 15°C and 30°C (59°F and 86°F). Always check the end flap of the packaging for the expiration date and lot number, as this information is important for safety and effectiveness.

When handling the product, make sure to do so in a clean environment to maintain its integrity. Proper storage and careful handling will help you use the product safely and effectively.

Additional Information

If you are pregnant or breastfeeding, it's important to consult with a healthcare professional before using this medication. Additionally, if you're concerned about the potential for medicine abuse among teens, you can find helpful resources at www.StopMedicineAbuse.org.

FAQ

What is Mucus DM used for?

Mucus DM is a cough suppressant and expectorant that helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive.

What are the active ingredients in Mucus DM?

The active ingredients in Mucus DM are DEXTROMETHORPHAN HBr and GUAIFENESIN.

How should I take Mucus DM?

Adults and children 12 years and over should take 1 tablet every 4 hours, not exceeding 6 tablets in 24 hours. Do not use if you are under 12 years old.

Are there any contraindications for Mucus DM?

Do not use Mucus DM if you are taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one within the last 2 weeks.

What should I do if I experience an overdose?

In case of overdose, seek medical help or contact a Poison Control Center immediately.

What should I do if my cough persists?

Stop using Mucus DM and consult a doctor if your cough lasts more than 1 week, recurs, or is accompanied by a fever, rash, or persistent headache.

Is Mucus DM safe to use during pregnancy or breastfeeding?

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

What are the storage instructions for Mucus DM?

Store Mucus DM at 25°C (77°F), with permitted excursions between 15°-30°C (59°-86°F).

What should I know about teen medicine abuse?

Parents are encouraged to learn about teen medicine abuse. More information can be found at www.StopMedicineAbuse.org.

Packaging Info

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

Packaging configurations for Mucus Dm.
Details

Drug Information (PDF)

This file contains official product information for Mucus 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 specified drug.

Uses and Indications

This drug is indicated for the relief of cough associated with minor throat and bronchial irritation due to the common cold. It helps to loosen phlegm (mucus) and thin bronchial secretions, facilitating the clearance of mucus from the bronchial passageways and making coughs more productive.

Additionally, this drug temporarily relieves 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

Healthcare professionals should advise patients to adhere strictly to the recommended dosage and not exceed the directed amount.

For adults and children aged 12 years and older, the recommended dosage is 1 tablet every 4 hours as needed. It is important to note that no more than 6 tablets should be taken within a 24-hour period to avoid potential overdose.

The use of this medication is not recommended for children under 12 years of age.

Contraindications

Use of this product is contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI) for conditions such as depression, psychiatric disorders, emotional conditions, or Parkinson’s disease, as well as for a period of 2 weeks following the discontinuation of an MAOI. Patients should consult a healthcare professional if uncertain whether their prescription medication contains an MAOI.

Additionally, exceeding the recommended dosage is contraindicated.

Warnings and Precautions

Patients should not use 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. Additionally, use of this product is contraindicated for a period of two weeks following the discontinuation of an MAOI. If there is uncertainty regarding whether a prescription drug 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 experience a cough that is accompanied by excessive phlegm (mucus) or if they have a persistent or chronic cough, which may be indicative of underlying conditions such as smoking, asthma, chronic bronchitis, or emphysema.

In the event of an overdose, it is crucial to obtain emergency medical assistance or contact a Poison Control Center immediately.

Patients are advised 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 a persistent headache. These symptoms may indicate a more serious underlying condition that requires medical evaluation.

Side Effects

Patients should be aware of the potential adverse reactions associated with the use of this medication. Serious warnings include the contraindication of use in individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within two weeks of discontinuing such treatment. MAOIs are typically prescribed for depression, psychiatric or emotional conditions, or Parkinson’s disease.

Patients are advised to discontinue use and consult a healthcare professional if a 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 serious underlying condition.

Before using this medication, patients should seek medical advice if they experience a cough accompanied by excessive phlegm (mucus) or if they have a persistent or chronic cough, which may be associated with smoking, asthma, chronic bronchitis, or emphysema.

In the event of an overdose, it is crucial to seek immediate medical assistance or contact a Poison Control Center.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there are no known 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 Dm (dextromethorphan hbr, guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus 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 1 tablet every 4 hours, with a maximum of 6 tablets in a 24-hour period.

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 potential adverse effects or changes in efficacy, 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. It is essential to evaluate the potential risks and benefits associated with its use during pregnancy and lactation.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no available data regarding the excretion of this medication 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 not been specifically studied in relation to dosage adjustments, special monitoring, or safety considerations for this medication. As such, there is no available information regarding the use of this drug in individuals with reduced kidney function. Healthcare professionals should exercise caution and consider the lack of data when prescribing this medication to patients with renal impairment.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in clinical trials for 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 regarding 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 in monitoring for symptoms that may arise from an overdose. While specific symptoms are not detailed in the provided information, it is essential to remain alert to any unusual or severe reactions in the patient.

Management of an overdose should be guided by established protocols, which may include supportive care and symptomatic treatment as necessary. The healthcare provider should ensure that the patient is stabilized and that any life-threatening conditions are addressed promptly.

In summary, immediate medical attention is essential in cases of overdose, and healthcare professionals should be prepared to implement appropriate management strategies based on the clinical presentation of the patient.

Nonclinical Toxicology

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

Postmarketing Experience

No postmarketing experience details are available in the insert text.

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 also be cautioned against using this product for at least two weeks after discontinuing an MAOI. If patients are uncertain whether their prescription includes an MAOI, they should be encouraged to consult with their doctor or pharmacist prior to use.

Patients should be instructed 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 serious underlying condition. It is important to emphasize that patients must not exceed the recommended dosage while using this product.

Additionally, healthcare providers should recommend that patients consult a doctor before using this product if they have a cough that is accompanied by excessive phlegm (mucus) or if they experience a persistent or chronic cough, which may be associated with smoking, asthma, chronic bronchitis, or emphysema.

Storage and Handling

The product is supplied in configurations that include specific NDC numbers, which can be found on the packaging. It should be stored at a controlled room temperature of 25°C (77°F), with permissible excursions between 15°C and 30°C (59°F to 86°F).

Healthcare professionals are advised to check the end flap of the packaging for the expiration date and lot number to ensure proper inventory management and product safety.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Mucus 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 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.

Learn more in our Editorial Policy

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Primary FDA sources:

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.