ADD CONDITION

items per page

Mucus Relief Dm

Last content change checked dailysee data sync status

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)
Marketed in the U.S.
Since 2005
Label revision date
June 30, 2025
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
Marketed in the U.S.
Since 2005
Label revision date
June 30, 2025
Manufacturer
ARMY AND AIR FORCE EXCHANGE SERVICE
Registration number
M012
NDC root
55301-533

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 Relief DM is a medication designed to help alleviate coughs and relieve congestion. It contains two active ingredients: dextromethorphan HBr, which acts as a cough suppressant to reduce the urge to cough, and guaifenesin, an expectorant that helps loosen phlegm (mucus) and thin bronchial secretions. This combination makes it easier for you to clear mucus from your airways, leading to more productive coughs and temporary relief from coughing associated with minor throat and bronchial irritation, such as that caused by the common cold.

This medication provides up to four hours of relief, helping you manage your symptoms effectively. Mucus Relief DM is available in film-coated tablets, making it easy to take. If you're dealing with a cough and congestion, this product may help you feel more comfortable and get the rest you need.

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.

Additionally, it provides temporary relief from the intensity of coughing and can help reduce the urge to cough, which may assist you in getting a better night's sleep. It is also effective for alleviating coughs caused by minor throat and bronchial irritation, often associated with the common cold.

Dosage and Administration

It's important to follow the dosage instructions carefully to ensure your safety and effectiveness of the medication. 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 only the directed amount to prevent any potential risks.

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're 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 carefully. Do not exceed the suggested amount, 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. It is crucial not to use it if you are currently taking a 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, consult your doctor before using this medication if your cough comes with excessive mucus or if you have a chronic cough due to smoking, asthma, chronic bronchitis, or emphysema.

Warnings and Precautions

You should not use this product if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression or certain other conditions, or if you have stopped taking an MAOI within the last two weeks. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist before using this product.

Before using this product, it's important to talk to your doctor if you have a 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 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 typical side effects.

Don’t wait for symptoms to worsen; acting quickly can make a significant difference in your safety. Always prioritize your health and well-being by reaching out for professional assistance in these situations.

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

If you are considering this medication for your child, it's important to know that it is not recommended for children under 12 years old. For those aged 12 and older, the dosage is one tablet every four hours, but you should not exceed six tablets in a 24-hour period. Always follow these guidelines to ensure your child's safety and well-being.

Geriatric Use

When it comes to using this medication in older adults, there is no specific information available about dosage adjustments, safety concerns, or special precautions. This means that if you or a loved one is an older adult, it’s important to consult with a healthcare provider before starting the medication. They can help determine the best approach based on individual health needs and any other medications being taken. Always prioritize open communication with your healthcare team to ensure safe and effective treatment.

Renal Impairment

If you have kidney problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or safety considerations for your condition. This means that there are no tailored guidelines for how this medication may affect you if you have renal impairment (kidney issues).

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your 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 should be used if you have hepatic impairment (liver issues).

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your liver health. They can help you understand how to manage your treatment effectively.

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.

Storage and Handling

To ensure the safety and effectiveness of your product, always check the outer package before use. Do not use it if the package is opened or if the blister is torn or broken. You can find important information like the expiration date and lot number on the end flap of the package.

For proper storage, keep the product at a temperature of 25ºC (77ºF). It’s okay if the temperature occasionally varies between 15°-30°C (59°-86°F), but try to avoid prolonged exposure to temperatures outside this range. Following these guidelines will help maintain the product's quality and safety.

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, especially among teens, you can find helpful resources at www.StopMedicineAbuse.org.

FAQ

What is Mucus Relief DM used for?

Mucus Relief DM is used as a cough suppressant and expectorant to help loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive.

What are the active ingredients in Mucus Relief DM?

The active ingredients are Dextromethorphan HBr 20 mg and Guaifenesin 400 mg.

How should I take Mucus Relief 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 using Mucus Relief DM?

Do not use Mucus Relief 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 my cough persists?

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

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

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

What are the side effects of Mucus Relief DM?

While specific side effects are not listed, you should stop use and consult a doctor if you experience any unusual symptoms or if your cough worsens.

How should Mucus Relief DM be stored?

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

What should I do in case of an overdose?

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

Packaging Info

Below are the non-prescription pack sizes of Mucus Relief Dm (dextromethorphan hbr and 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

Mucus Relief DM is formulated as an immediate-release dosage form in the form of film-coated tablets. Each tablet contains 20 mg of dextromethorphan HBr and 400 mg of guaifenesin, serving as a cough suppressant and expectorant. The product is designed to control cough and thin and loosen mucus, providing relief for up to 4 hours. The packaging includes 30 tablets and is tamper evident, with a warning to not use if the package is opened or if the blister unit is torn, broken, or shows any signs of tampering.

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 loosen phlegm (mucus) and thins 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 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), which includes certain medications for depression, psychiatric or emotional conditions, or Parkinson’s disease. Additionally, use is contraindicated for 2 weeks following the discontinuation of an MAOI. Patients should consult a healthcare professional if uncertain whether their prescription medication contains an MAOI.

Exceeding the recommended dosage while using this product is also contraindicated.

Warnings and Precautions

The use of this product is contraindicated in individuals currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications prescribed for depression, psychiatric or emotional conditions, or Parkinson’s disease. Additionally, it should not be used for a period of two weeks following the discontinuation of an MAOI. Patients uncertain about whether their prescription includes an MAOI are advised to consult a healthcare professional, such as a doctor or pharmacist, prior to using this product.

Healthcare professionals should exercise caution and recommend that patients seek medical advice 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, immediate medical assistance should be sought, or the local Poison Control Center should be contacted without delay.

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

Side Effects

Patients should be aware of the potential adverse reactions associated with the use of this medication. Serious adverse reactions may occur, particularly in patients who are currently taking or have recently discontinued a prescription monoamine oxidase inhibitor (MAOI). The use of this medication is contraindicated in such cases, as it may lead to significant health risks.

Common adverse reactions include the persistence of cough beyond one week, especially if it tends to recur or is accompanied by additional symptoms such as fever, rash, or persistent headache. These symptoms may indicate a serious underlying condition, and patients are advised to discontinue use and consult a healthcare professional if they experience these signs.

Additionally, patients should seek medical advice before using this medication if they have a cough that is accompanied by excessive phlegm (mucus) or if they suffer from a persistent or chronic cough due to conditions such as smoking, asthma, chronic bronchitis, or emphysema. It is essential for patients to communicate their health status and any ongoing symptoms to their healthcare provider to ensure safe and effective use of the medication.

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 hbr and guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Dm.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For adolescents aged 12 years and older, the recommended dosage is 1 tablet every 4 hours, with a maximum of 6 tablets in a 24-hour period. Caution is advised when administering this medication to ensure adherence to the specified dosing guidelines.

Geriatric Use

There is no specific information available 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. It is advisable to monitor these patients closely for any 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 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 no specific data available regarding the excretion of this medication in 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 addressed in the drug insert text regarding dosage adjustments, special monitoring, or safety considerations. Therefore, healthcare professionals should exercise caution when prescribing this medication to individuals with reduced kidney function, as the absence of detailed guidance necessitates careful clinical judgment and monitoring of these patients.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this medication. Consequently, there are no established dosage adjustments, special monitoring requirements, or precautions outlined for individuals with compromised liver function. It is recommended that healthcare providers exercise caution when prescribing this medication to patients with hepatic impairment, given the lack of data on its safety and efficacy in this population. Regular monitoring of liver function may be prudent in these cases, although specific parameters are not defined in the prescribing information.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay. Prompt intervention is crucial to mitigate potential adverse effects associated with the overdose.

Healthcare professionals should be aware that the specific symptoms of an overdose may vary depending on the substance involved. Therefore, a thorough assessment of the patient's condition is essential to determine the appropriate course of action.

Management of an overdose typically involves supportive care and symptomatic treatment. Continuous monitoring of the patient's vital signs and clinical status is recommended. In cases where the specific substance is known, targeted therapies may be employed as indicated.

It is essential for healthcare providers to remain vigilant and act swiftly in the management of overdose situations to ensure optimal patient outcomes.

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 emphasize the importance of adhering to the recommended dosage and not exceeding it.

Patients should be encouraged to consult with their healthcare provider 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, particularly one associated with smoking, asthma, chronic bronchitis, or emphysema.

Healthcare providers should instruct patients to discontinue use and consult a doctor if their cough persists for more than one week, tends to recur, or is accompanied by symptoms such as fever, rash, or a persistent headache, as these may indicate a serious underlying condition.

Additionally, it is important to inform patients that they should not use this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI) for conditions such as depression, psychiatric or emotional disorders, or Parkinson’s disease, or for two weeks after discontinuing an MAOI. If patients are uncertain whether their prescription medication contains an MAOI, they should be advised to consult their doctor or pharmacist prior to using this product.

Storage and Handling

The product is supplied in tamper-evident packaging. It is imperative that the product not be used if the outer package is opened or if the blister is torn or broken. Healthcare professionals should refer to the end flap of the packaging for the expiration date and lot number.

For optimal storage, the product should be maintained at a temperature of 25ºC (77ºF). Temporary excursions are permissible within the range of 15°-30°C (59°-86°F). Proper handling and storage conditions are essential to ensure the integrity and efficacy of the product.

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.

Learn more in our Editorial Policy

Last AI update:

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.