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Mucus Relief Dm Extended Release Caplets

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Active ingredients
  • Guaifenesin 600 mg
  • Dextromethorphan Hydrobromide 30 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2018
Label revision date
February 10, 2026
Active ingredients
  • Guaifenesin 600 mg
  • Dextromethorphan Hydrobromide 30 mg
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2018
Label revision date
February 10, 2026
Manufacturer
Rugby Laboratories
Registration number
ANDA209692
NDC root
0536-1161

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Drug Overview

Mucus Relief DM ER is an extended-release tablet 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: guaifenesin (an expectorant that helps loosen phlegm and thin bronchial secretions) and dextromethorphan HBr (a cough suppressant that temporarily relieves the urge to cough).

This medication works by making coughs more productive, allowing you to clear bothersome mucus from your airways. It provides relief for up to 12 hours, helping to control coughing and reduce the intensity of your cough, which can be especially helpful for getting 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 coughing caused by minor throat and bronchial irritation, which can happen with the common cold or from inhaling irritants. It also helps reduce the intensity of your cough and can lessen the urge to cough, making it easier for you to get a good night's sleep.

Dosage and Administration

When taking this medication, it's important to swallow the tablet whole—do not crush, chew, or break it. Make sure to take it with a full glass of water, which helps the tablet dissolve properly in your stomach. You can take this medication at any time, regardless of your meal schedule.

For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, but you should not exceed 4 tablets in a 24-hour period. If you have children under 12 years of age, this medication is not suitable for them, so please avoid using it for that age group. Always follow these guidelines to ensure safe and effective use of the medication.

What to Avoid

It’s important to be cautious when considering this medication. You should not use it if you are under 12 years of age. Additionally, if you are currently taking a prescription monoamine oxidase inhibitor (MAOI)—which is a type of medication used for depression, psychiatric or emotional conditions, or Parkinson's disease—or if you have stopped taking an MAOI within the last two weeks, you must avoid this product. If you are unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist before using this medication.

Side Effects

You should be aware of some important warnings and potential side effects when considering this medication. It is not recommended for children under 12 years old, and you should avoid using it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one in the past two weeks. If you have a persistent cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus, consult your doctor before use.

While using this product, make sure to follow the dosage instructions carefully. If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, stop using the medication and seek medical advice, as these may indicate a more serious condition. If you are pregnant or breastfeeding, it's best to consult a healthcare professional before using this product. Always keep it out of reach of children, and in case of an overdose, contact medical help or a Poison Control Center immediately.

Warnings and Precautions

You should not use this medication if you are under 12 years old or 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 wait at least two weeks after stopping an MAOI before using this product. If you're unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist.

If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, stop using the medication and contact your doctor. These symptoms could 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 or contact a Poison Control Center at 1-800-222-1222. Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing.

Do not wait for symptoms to worsen; getting prompt assistance can be vital. Always keep emergency contact information handy and be aware of the signs of overdose to ensure 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 considering this medication for children. You should not use it for anyone under 12 years of age. For those who are 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, but be sure not to exceed 4 tablets in a 24-hour period.

Always consult with a healthcare professional if you have questions about using this medication for your child, especially if they are under 12, as it is not recommended for that age group.

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 should be used 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 determine the best course of action based on your kidney function and overall health.

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

When handling the product, be cautious and check the blister unit carefully. If you notice that it is torn, broken, or shows any signs of tampering, do not use it. Following these guidelines will help you use the product safely and effectively.

Additional Information

You should take this medication orally. For adults and children aged 12 and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum of 4 tablets in a 24-hour period. If your child is under 12 years old, do not use this medication.

If you are pregnant or breastfeeding, consult a healthcare professional before using this medication. Always keep it out of reach of children. In case of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222.

FAQ

What is Mucus Relief DM ER?

Mucus Relief DM ER is an extended-release tablet that contains Guaifenesin (600 mg) as an expectorant and Dextromethorphan HBr (30 mg) as a cough suppressant.

How does Mucus Relief DM ER 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 ER?

Adults and children 12 years of age and older can use it, taking 1 or 2 tablets every 12 hours, not exceeding 4 tablets in 24 hours. It should not be used by children under 12 years of age.

Are there any warnings for Mucus Relief DM ER?

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 if symptoms worsen.

What should I do in case of overdose?

In case of overdose, seek medical help or contact a Poison Control Center immediately at 1-800-222-1222.

Can I take Mucus Relief DM ER if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, ask a health professional before use.

How should I take Mucus Relief DM ER?

Take the tablets with a full glass of water and do not crush, chew, or break them. You can take it without regard for meal timing.

What should I do if my cough lasts more than 7 days?

If your cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache, stop use and consult a doctor.

Packaging Info

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

Packaging configurations for Mucus Relief Dm Extended Release Caplets.
Details

Drug Information (PDF)

This file contains official product information for Mucus Relief Dm Extended Release Caplets, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

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.

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

Dosage and Administration

Patients should take the tablets with a full glass of water. It is important to note that the tablets must not be crushed, chewed, or broken prior to ingestion. This medication can be administered without regard to the timing of meals.

For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum of 4 tablets in a 24-hour period.

This medication is not recommended for use in children under 12 years of age.

Contraindications

Use of this product is contraindicated in the following situations:

Children under 12 years of age should not use this product due to safety concerns related to efficacy and potential adverse effects in this age group.

The product is also contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI) or within 2 weeks of discontinuing an MAOI. This is due to the risk of 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

The use of this product is contraindicated in children under 12 years of age. Additionally, it should not be administered to individuals currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. This contraindication extends for a period of two weeks following the cessation 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 prior to recommending this product.

Patients should be instructed 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 the presence of a serious underlying condition that requires further evaluation.

In the event of an overdose, immediate medical assistance should be sought, or the individual should contact a Poison Control Center at 1-800-222-1222 for guidance. Prompt action is essential to ensure patient safety and appropriate management of the situation.

Side Effects

Patients should be aware of the following adverse reactions associated with the use of this product.

Serious adverse reactions may occur, and patients are advised to stop use and consult a healthcare professional if the cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

This product is contraindicated for use in children under 12 years of age and should not be used in conjunction with prescription monoamine oxidase inhibitors (MAOIs) or within 2 weeks of discontinuing such medications. Patients uncertain about whether their prescription includes an MAOI should seek guidance from a doctor or pharmacist prior to use.

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

During the use of this product, it is crucial for patients to adhere strictly to the recommended dosage and not exceed the directed amount.

For pregnant or breastfeeding individuals, it is recommended to consult a health professional before use.

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 should be made at 1-800-222-1222.

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 Extended Release Caplets (guaifenesin, dextromethorphan hbr). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Dm Extended Release Caplets.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For adolescents aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum of 4 tablets in a 24-hour period. Caution is advised when prescribing to younger populations, as safety and efficacy have not been established in children under 12 years.

Geriatric Use

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. The potential risks and benefits must be carefully considered in these populations to ensure the safety of both the mother and the fetus or infant.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no available data 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 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. The national Poison Control Center can be reached at 1-800-222-1222.

Healthcare professionals should be aware that timely intervention is crucial in managing overdose situations. Symptoms of overdose may vary depending on the substance involved and the individual’s health status. Therefore, a thorough assessment of the patient is essential to determine the appropriate course of action.

Management of an overdose may include supportive care and symptomatic treatment, tailored to the specific symptoms presented. Continuous monitoring of the patient’s vital signs and clinical status is recommended to ensure prompt identification and management of any complications that may arise.

In summary, immediate medical attention and appropriate management strategies are vital in addressing overdose cases effectively.

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

Postmarketing experience has revealed that various adverse reactions have been reported voluntarily or through surveillance programs. These include allergic reactions such as rash, pruritus, and urticaria. Additionally, instances of dizziness, nausea, and vomiting have been documented. Reports of confusion and hallucinations have also been noted. Furthermore, cases of respiratory depression and serotonin syndrome have been identified, particularly in patients using the medication in conjunction with other serotonergic drugs.

Patient Counseling

Healthcare providers should advise patients to seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222 in the event of an overdose. It is important to inform patients that this product is not recommended for use in children under 12 years of age.

Patients should be cautioned against using this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications for depression, psychiatric or emotional conditions, or Parkinson's disease. They should also 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 use.

Healthcare providers should instruct patients to discontinue use and consult a doctor if their cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious condition.

When using this product, patients must be reminded not to exceed the recommended dosage. Additionally, it is advisable for patients to consult a doctor before using this product if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. Patients should also be encouraged to seek medical advice if their cough is accompanied by excessive phlegm (mucus).

Storage and Handling

The product is supplied in a tamper-evident blister unit. It is essential to inspect the blister unit prior to use; do not use if the unit is torn, broken, or shows any signs of tampering.

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

Additional Clinical Information

The medication is administered orally, with the recommended dosage for adults and children aged 12 years and older being 1 or 2 tablets every 12 hours, not exceeding 4 tablets within a 24-hour period. It is contraindicated for children under 12 years of age.

Clinicians should advise patients who are pregnant or breastfeeding to consult a health professional prior to use. Additionally, it is crucial to keep the medication out of reach of children, and in the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately at 1-800-222-1222.

Drug Information (PDF)

This file contains official product information for Mucus Relief Dm Extended Release Caplets, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It was built from the FDA Structured Product Label (DailyMed) for Mucus Relief Dm Extended Release Caplets, retrieved by a validated AI data-extraction workflow.

All FDA-listed dosage forms and strengths are shown in the Packaging & NDC Codes section above. Regulatory status appears in the Summary Information panel above and was verified in the FDA National Drug Code directory and the NSDE NDC Directory daily file.

Note: an automated daemon monitors NSDE checksums; when the record for this NDC changes, the new file is pulled instantly and this page is refreshed.

No human clinician has reviewed this version.

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