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
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2020
Label revision date
August 11, 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
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2020
Label revision date
August 11, 2025
Manufacturer
Good Sense (Geiss, Destin & Dunn, Inc.)
Registration number
M012
NDC root
50804-858

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 you manage cough and mucus associated with minor throat and bronchial irritation, such as that caused by the common cold or inhaled irritants. 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 your coughs more productive by clearing out bothersome mucus, allowing for easier breathing.

By temporarily relieving coughing and helping to clear mucus from your airways, Mucus Relief DM can provide comfort and support, especially when you're trying to rest or 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.

It can temporarily relieve coughs caused by minor throat and bronchial irritation, which may happen due to the common cold or exposure to irritants. Additionally, it can 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.

Dosage and Administration

When you need to take this medication, make sure to follow the dosage instructions carefully. For adults and children aged 12 years and older, you should take 1 tablet every 4 hours as long as your symptoms continue. However, it's important not to exceed 6 tablets in a 24-hour period. Always take your tablet with a full glass of water to help it work effectively.

If you have children under 12 years of age, please do not use this medication for them. Always ensure you are following these guidelines to use the medication safely and effectively.

What to Avoid

It's important to be cautious when considering this medication. You should not use it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which are specific medications often prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. 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.

Taking this medication while on an MAOI can lead to serious health risks, so it's crucial to follow these guidelines to ensure your safety.

Side Effects

You should be aware of some important side effects and warnings associated with this medication. If you are currently taking a prescription monoamine oxidase inhibitor (MAOI) for conditions like depression or Parkinson's disease, do not use this medication, and wait at least two weeks after stopping the MAOI before starting it.

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 consult a doctor, as these could indicate a more serious health issue. Additionally, if you have a chronic cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough produces excessive mucus, it's important to talk to your doctor before using this medication. In case of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222.

Warnings and Precautions

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

It's important to stop using this medication and contact your doctor if your cough lasts more than seven days, returns, or occurs alongside a fever, rash, or persistent headache, as these may indicate a more serious health issue. In the event of an overdose, seek medical assistance immediately or call the Poison Control Center at 1-800-222-1222.

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 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

If you are considering this medication for your child, it's important to know that it should not be used in children under 12 years of age. For those who are 12 years and older, the recommended dosage is one tablet every four hours as needed for symptoms, but you should not give more than six tablets in a 24-hour period. Always ensure you follow these guidelines to keep your child safe and healthy.

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 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 your kidneys are not functioning properly.

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your kidney health. They can help monitor your condition 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 differently due to your liver health.

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

Drug Interactions

It's crucial to be aware of potential interactions when taking medications. 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 drug. Additionally, you need to 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 harmful interactions. Your health is important, and your provider can help you navigate any concerns regarding your prescriptions.

Storage and Handling

To ensure the safety and effectiveness of your product, store it at a temperature between 20-25ºC (68-77ºF). It's important to keep the outer carton, as it contains essential warnings and product information that you may need.

When handling the product, check the safety seal under the cap before use. If the seal is broken or missing, do not use the product, as this indicates it may have been tampered with. Following these guidelines will help you use the product safely and effectively.

Additional Information

You should take this medication orally with a full glass of water. For adults and children aged 12 and older, the recommended dose is 1 tablet every 4 hours as needed, but do not exceed 6 tablets in a 24-hour period. If you are under 12 years old, do not use this medication.

FAQ

What is Mucus Relief DM?

Mucus Relief DM is an immediate acting expectorant and cough suppressant that contains Dextromethorphan HBr 20 mg and Guaifenesin 400 mg in dye-free tablets.

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 can use Mucus Relief DM?

Adults and children 12 years of age and older can take it, but it should not be used by children under 12 years of age.

What is the recommended dosage for adults and children over 12?

The recommended dosage is 1 tablet every 4 hours while symptoms persist, with a maximum of 6 tablets in 24 hours.

Are there any warnings associated with Mucus Relief DM?

Yes, do not use it if you are taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI. Consult a doctor if your cough lasts more than 7 days or is accompanied by fever, rash, or persistent headache.

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.

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

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

How should I store Mucus Relief DM?

Store Mucus Relief DM between 20-25ºC (68-77ºF) and keep the outer carton for complete warnings and product information.

Packaging Info

Below are the non-prescription pack sizes of Mucus Relief Dm (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 a combination expectorant and cough suppressant formulated as tablets. Each tablet contains 20 mg of Dextromethorphan HBr and 400 mg of Guaifenesin. The product is dye-free and is packaged in a tamper-evident container, with a warning to not use if the printed safety seal under the cap is broken or missing. Users are advised to keep the outer carton for complete warnings and product information. Mucus Relief DM is distributed by Geiss, Destin & Dunn, Inc., a Perrigo Company, located in Peachtree City, GA 30269. Further information can be accessed at www.PerrigoDirect.com.

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

Adults and children 12 years of age and older are instructed to take 1 tablet every 4 hours while symptoms persist. It is essential that the total dosage does not exceed 6 tablets within a 24-hour period. Each tablet should be taken with a full glass of water to ensure proper administration and absorption.

For children under 12 years of age, the use of this medication is not recommended.

Contraindications

Use is contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI) or within 2 weeks of discontinuing an MAOI. This contraindication is due to the potential for serious interactions that may occur when combining these medications. If there is uncertainty regarding the presence of an MAOI in a prescription drug, consultation with a healthcare professional is advised prior to use.

Warnings and Precautions

Patients should not use this medication concurrently with prescription monoamine oxidase inhibitors (MAOIs), which are commonly prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. Additionally, this medication should not be taken for at least two weeks following the discontinuation of an MAOI. Healthcare professionals are advised to confirm with patients whether their current prescriptions include an MAOI, and to consult a doctor or pharmacist if there is any uncertainty.

It is imperative to discontinue use and seek medical advice if a 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 further evaluation.

In the event of an overdose, immediate medical assistance should be sought. Patients or caregivers should contact a Poison Control Center at 1-800-222-1222 without delay.

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 patients 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 stop use and consult a healthcare professional if their cough persists for more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Additionally, individuals should seek medical advice before using this medication if they have a persistent or chronic cough, such as that associated with smoking, asthma, chronic bronchitis, or emphysema, or if their cough is accompanied by excessive phlegm (mucus).

In the event of an overdose, it is crucial for patients to seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222.

Drug Interactions

The concomitant use of this drug with 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 initiate therapy with this drug while currently taking an MAOI or within 2 weeks of discontinuing an MAOI. It is essential for patients to consult with a healthcare professional, such as a doctor or pharmacist, to confirm whether their prescription medication contains an MAOI before starting this drug.

Packaging & NDC

Below are the non-prescription pack sizes of Mucus Relief Dm (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 as needed while symptoms persist, with a maximum of 6 tablets in a 24-hour period. Caution is advised to ensure that the dosage does not exceed the recommended limits.

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 therapeutic response, 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. The potential risks and benefits must be carefully considered, as the effects on fetal outcomes and lactation are not fully established. It is essential for women of childbearing potential to discuss their individual circumstances with a healthcare provider to ensure safe 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 addressed in the drug insert regarding dosage adjustments, special monitoring, or safety considerations. Therefore, healthcare professionals should exercise caution when prescribing this medication to patients with reduced kidney function, as the absence of detailed guidance 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 at 1-800-222-1222. Prompt action is crucial to mitigate potential adverse effects associated with overdosage.

Healthcare professionals should be vigilant for symptoms that may arise from an overdose, although specific symptoms are not detailed in the provided information. The management of an overdose will depend on the substance involved and the severity of the symptoms presented.

It is essential to follow established protocols for overdose management, which may include supportive care and symptomatic treatment as necessary. Continuous monitoring of the patient’s condition is recommended to ensure appropriate interventions are implemented in a timely manner.

Nonclinical Toxicology

If pregnant or breast-feeding, it is advised to consult a health professional before use. There are no specific non-teratogenic effects or detailed nonclinical toxicology information available. Additionally, no specific animal pharmacology and toxicology details have been provided.

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 at 1-800-222-1222 in the event of an overdose. It is crucial to inform patients that this medication should not be used concurrently with prescription monoamine oxidase inhibitors (MAOIs), which are used for treating depression, psychiatric or emotional conditions, or Parkinson's disease. Patients should also be cautioned against using this medication 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 their doctor or pharmacist prior to taking this medication.

Patients should be instructed to discontinue use and consult a healthcare provider if their cough persists for more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition. It is important to emphasize that patients must adhere to the recommended dosage and not exceed the directed amount while using this product.

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

Storage and Handling

The product is supplied in a configuration that includes a tamper-evident seal. It is essential to inspect the safety seal under the cap; the product should not be used if this seal is broken or missing.

For optimal storage, the product must be kept at a temperature range of 20-25ºC (68-77ºF). It is recommended to retain the outer carton, as it contains important warnings and product information that may be necessary for reference.

Additional Clinical Information

The medication is administered orally and should be taken with a full glass of water. For adults and children aged 12 years and older, the recommended dosage is one tablet every four hours as needed, with a maximum of six 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, 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.