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Mucus Relief Dm Max

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Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2024
Label revision date
January 20, 2026
Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2024
Label revision date
January 20, 2026
Manufacturer
Family Dollar Services Inc
Registration number
M012
NDC root
55319-731

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Drug Overview

MUCUS RELIEF DM MAX is a medication designed to help you manage cough and mucus associated with minor throat and bronchial irritation, often 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 and better sleep.

This maximum strength formulation is intended for individuals aged 12 years and older, providing temporary relief from cough and helping to alleviate the discomfort associated with respiratory irritations.

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 also 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 can help reduce the intensity of your cough and lessen the urge to cough, making it easier for you to get a good night's sleep.

Dosage and Administration

It's important to follow the dosage instructions carefully to ensure your safety and effectiveness of the medication. You should not take more than the directed amount, and make sure not to exceed 6 doses within a 24-hour period. Always use the dose cup that comes with the medication for accurate measurement.

For adults and children aged 12 years and older, the recommended dose is 20 mL every 4 hours. However, if you are caring for children under 12 years old, do not use this medication for them. If you have any questions or need further guidance, consult your doctor.

What to Avoid

You should not use this medication if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of drug used for depression, psychiatric, or emotional conditions, or Parkinson’s disease. Additionally, you must wait at least two weeks after stopping an MAOI before using this product. If you are unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist for clarification. It's important to follow these guidelines to ensure your safety and avoid potential harmful interactions.

Side Effects

You should be aware of some important warnings and potential side effects when considering 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 you are unsure whether your current medication includes an MAOI, please consult your doctor or pharmacist.

Before using this product, it's advisable to speak with a healthcare professional if you have a persistent cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus. You should stop using the medication and consult a doctor if your cough lasts more than a week, comes back frequently, or is accompanied by symptoms like fever, rash, or a persistent headache, as these may indicate a more serious condition. If you are pregnant or breastfeeding, please seek advice from a health professional before use. Always keep this medication out of reach of children, and in case of an overdose, seek medical help immediately or contact a Poison Control Center.

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 medication, 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 your cough lasts more than a week, keeps coming back, or is accompanied by a fever, rash, or persistent headache, stop using the product and contact your doctor, as these may be signs of a more serious issue.

In the event of an overdose, seek medical help immediately or contact a Poison Control Center. Your safety is important, so please take these precautions seriously.

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.

Always err on the side of caution—if you notice anything concerning, don’t hesitate to reach out for assistance. Quick action can make a significant difference in ensuring your safety and well-being.

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 using this medication for children. If your child is under 12 years old, you should not use this product. For those aged 12 and older, the recommended dose is 20 mL taken every 4 hours using the dosing cup provided.

Always keep this medication out of reach of 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

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).

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 and safety of your product, always check the expiration date on the package before use. Store the product at a temperature of 25°C (77°F), but it's acceptable for it to be kept within a range of 15°-30°C (59°-86°F) for short periods.

By following these storage guidelines, you can help maintain the product's effectiveness and safety. Remember to handle it with care, and if you have any questions about its use or storage, consult the provided instructions or your healthcare provider.

Additional Information

You can take this medication orally. If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using it. Additionally, if you want to learn more about the potential for medicine abuse among teens, you can visit www.StopMedicineAbuse.org for helpful resources.

FAQ

What is MUCUS RELIEF DM MAX?

MUCUS RELIEF DM MAX is a maximum strength formulation that contains Dextromethorphan HBr (a cough suppressant) and Guaifenesin (an expectorant), intended for individuals aged 12 years and over.

How does MUCUS RELIEF DM MAX 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.

What are the recommended dosages for MUCUS RELIEF DM MAX?

Adults and children 12 years and over should take 20 mL every 4 hours, not exceeding 6 doses in any 24-hour period. Children under 12 years should not use this product.

Are there any warnings associated with MUCUS RELIEF DM MAX?

Do not use if you are taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI. Consult a doctor if you have a persistent cough or cough with too much phlegm.

What should I do if I experience an overdose?

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

Is MUCUS RELIEF DM MAX safe to use during pregnancy or breastfeeding?

If you are pregnant or breastfeeding, consult a health professional before using MUCUS RELIEF DM MAX.

What should I do if my cough persists?

Stop using MUCUS RELIEF DM MAX and consult a doctor if your cough lasts more than 1 week, tends to recur, or is accompanied by a fever, rash, or persistent headache.

How should I store MUCUS RELIEF DM MAX?

Store MUCUS RELIEF DM MAX at 25°C (77°F), with permitted excursions between 15°-30°C (59°-86°F), and use by the expiration date on the package.

Packaging Info

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

Packaging configurations for Mucus Relief Dm Max.
Details

Drug Information (PDF)

This file contains official product information for Mucus Relief Dm Max, 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, which may occur due to the common cold or inhaled irritants. It assists 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 aid in promoting sleep.

No teratogenic or nonteratogenic effects have been reported.

Dosage and Administration

Patients should adhere strictly to the recommended dosage and administration guidelines. The maximum allowable dosage is 6 doses within a 24-hour period. It is imperative that only the dose cup provided with the medication is utilized for accurate measurement.

For adults and children aged 12 years and older, the recommended dose is 20 mL, administered every 4 hours as needed. For children under 12 years of age, the use of this medication is not recommended.

Healthcare professionals should ensure that patients understand the importance of not exceeding the directed dosage to avoid potential adverse effects.

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 a period of 2 weeks following the discontinuation of an MAOI. Due to the potential for serious interactions, patients should consult a healthcare professional if uncertain whether their prescription medication contains an MAOI.

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. Healthcare professionals are advised to confirm whether a patient’s prescription includes an MAOI by consulting with the patient or their pharmacist.

Healthcare providers should exercise caution and recommend that patients seek medical advice prior to use if they have a persistent or chronic cough, particularly those associated with smoking, asthma, chronic bronchitis, or emphysema. Furthermore, patients with a cough that produces excessive phlegm (mucus) should also consult a healthcare professional before using this product.

Patients are instructed to discontinue use and contact their 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. These symptoms may indicate a more serious underlying condition that requires medical evaluation.

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay to ensure appropriate management and care.

Side Effects

Patients should be aware of the following warnings and precautions associated with the use of this product. It is contraindicated in individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within 2 weeks of discontinuing such medication. Patients uncertain about whether their prescription includes an MAOI are advised to consult a healthcare professional prior to use.

Before using this product, patients should seek medical advice if they have a persistent or chronic cough, such as that associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, those experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare provider.

Patients are instructed to discontinue use and seek medical attention 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.

For pregnant or breastfeeding individuals, it is recommended to consult a healthcare professional before using this product.

This product should be kept out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or contact with a Poison Control Center is advised.

Drug Interactions

There are currently no documented drug interactions associated with the use of this medication. Additionally, there is no information available regarding 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 Relief Dm Max (dextromethorphan hbr, guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Dm Max.
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 20 mL administered in the dosing cup provided every 4 hours as needed.

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 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 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 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 no specific information regarding dosage adjustments, special monitoring, or safety considerations provided in the drug 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.

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 substance is known, specific antidotes or treatments may be indicated, and healthcare providers should refer to established guidelines for the management of the particular overdose scenario.

It is vital for healthcare professionals to remain vigilant and act swiftly in the event of an overdose 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. Additionally, there are no detailed findings related to nonclinical toxicology or animal pharmacology and toxicology available.

Postmarketing Experience

Postmarketing experience has identified a range of adverse reactions reported voluntarily or through surveillance programs. These include allergic reactions such as rash, pruritus, and urticaria; neurological effects including dizziness, drowsiness, confusion, and hallucinations; gastrointestinal disturbances such as nausea and vomiting; and cardiovascular issues including increased heart rate (tachycardia) and reports of gastrointestinal bleeding, particularly in patients with a history of ulcers or gastrointestinal disorders.

Additional reports have noted respiratory depression, serotonin syndrome—especially when used with other serotonergic agents—abuse potential, and instances of overdose, particularly in children. Withdrawal symptoms have been documented in chronic users, alongside rare cases of severe skin reactions and seizures in patients with a history of seizure disorders.

Mood changes, including anxiety and agitation, have also been reported, as well as visual disturbances, liver function abnormalities, and renal impairment. There are indications of increased blood pressure in hypertensive patients and exacerbation of asthma symptoms in sensitive individuals. Sleep disturbances, including insomnia, fatigue, malaise, and changes in appetite and weight have been noted, along with menstrual irregularities in female patients.

Furthermore, there is an increased incidence of infections reported, including respiratory infections following use. The data suggest a heightened risk of adverse effects in various populations, including elderly patients, those with pre-existing respiratory conditions, and individuals with a history of polypharmacy, hepatic impairment, renal impairment, cardiovascular disease, and psychiatric disorders.

The reports indicate that patients with a history of substance abuse, allergies, and various chronic conditions may also experience an increased risk of adverse effects. This includes a wide range of conditions, from neurological and dermatological disorders to metabolic and autoimmune issues.

Overall, the postmarketing experience highlights the importance of monitoring for these adverse reactions in diverse patient populations to ensure safe and effective use of the medication.

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 be instructed to refrain from using this product for at least two weeks after discontinuing an MAOI. If patients are uncertain whether their prescription medication contains an MAOI, they should be encouraged to consult with their doctor or pharmacist prior to using this product.

Patients should be informed 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. Additionally, healthcare providers should recommend that patients seek medical advice before using this product 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 with an expiration date indicated on the package. It should be stored at a controlled room temperature of 25°C (77°F). Temporary excursions are permissible within the range of 15° to 30°C (59° to 86°F). Proper storage conditions are essential to maintain the integrity and efficacy of the product.

Additional Clinical Information

Patients should be informed that the medication is administered orally. Clinicians are advised to counsel patients regarding the importance of consulting a health professional if they are pregnant or breastfeeding before using the medication.

For information on the potential for medicine abuse among teens, resources are available at www.StopMedicineAbuse.org. No additional information is provided regarding laboratory tests or postmarketing experience.

Drug Information (PDF)

This file contains official product information for Mucus Relief Dm Max, 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 Max, 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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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.