ADD CONDITION

items per page

Kirkland Signature Mucus Dm

Last content change checked dailysee data sync status

Active ingredients
  • Guaifenesin 1200 mg
  • Dextromethorphan Hydrobromide 60 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 2023
Label revision date
August 20, 2025
Active ingredients
  • Guaifenesin 1200 mg
  • Dextromethorphan Hydrobromide 60 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 2023
Label revision date
August 20, 2025
Manufacturer
Costco Wholesale Company
Registration number
ANDA207602
NDC root
63981-812

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

KIRKLAND Signature MUCUS-DM is a maximum strength medication that combines guaifenesin (an expectorant that helps loosen phlegm) and dextromethorphan hydrobromide (a cough suppressant). This medication is designed to help you manage coughs caused by minor throat and bronchial irritation, such as those that may occur with the common cold or from inhaled irritants.

By thinning and loosening mucus in your airways, KIRKLAND Signature MUCUS-DM makes coughs more productive, allowing you to clear out bothersome mucus more effectively. Additionally, it helps reduce the intensity of coughing and decreases the urge to cough, which can be particularly helpful for getting a good night's sleep. This extended-release formulation provides relief for up to 12 hours, making it a convenient option for managing your symptoms.

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. 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 one tablet every 12 hours. However, you should not take more than two tablets in a 24-hour period. If you have children under 12 years of age, please do not use this medication for them. Always follow these guidelines to ensure safe and effective use.

What to Avoid

You should avoid using this product if you are a child under 12 years of age. Additionally, do not take it 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. It's important to wait at least two weeks after stopping an MAOI before using this product. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist for guidance.

Side Effects

If you experience a cough that lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, it's important to stop using the medication and consult a doctor, as these could indicate a serious illness.

Before using this medication, you should also speak with your doctor if you have a chronic cough related to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is producing excessive mucus (phlegm).

Warnings and Precautions

You should not use this medication if you are under 12 years old. Additionally, avoid it if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression or certain psychiatric 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, 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 you experience an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. You should also stop using the medication and call your doctor if your cough lasts more than 7 days, returns, or occurs with fever, rash, or a persistent headache, as these may indicate a more serious condition.

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 take overdosing seriously. If you notice any of these symptoms or have concerns about your health, don’t hesitate to reach out for 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

It’s important to know that this medication is not recommended for children under 12 years of age. If your child is 12 years or older, the typical dosage is one tablet every 12 hours, with a maximum of two tablets in a 24-hour period. Always ensure that medications are kept out of reach of children to prevent accidental ingestion.

In the event of an overdose, it’s crucial to seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. Your child's safety is the top priority, so please follow these guidelines carefully.

Geriatric Use

While there is no specific information about how this medication should be used by older adults, it’s important to approach any new treatment with caution. If you or a loved one is an older adult, it’s always a good idea to discuss any medications with a healthcare provider. They can help ensure that the treatment is safe and appropriate, considering any unique health needs or conditions that may be present.

Since there are no dosage adjustments or special precautions mentioned for elderly patients, your healthcare provider will be the best resource for personalized advice. Always keep them informed about any other medications or health issues to help manage your overall care effectively.

Renal Impairment

If you have kidney problems, it's important to know that the information provided does not include specific guidelines for dosage adjustments, special monitoring, or safety considerations related to renal impairment (kidney issues). This means that there are no tailored recommendations for how your treatment may need to change based on your kidney function.

Always consult your healthcare provider for personalized advice and to ensure that your treatment is safe and effective for your specific condition. They can help determine the best approach for managing your health, especially if you have concerns about your kidneys.

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 (issues with liver function).

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 guidance.

Always discuss any medications you are taking with your healthcare provider to ensure your safety and avoid potentially harmful interactions. Your health and well-being are the top priority, so don't hesitate to ask questions about your treatments.

Storage and Handling

To ensure the best performance of your product, store it in a cool, dry place at a temperature between 20-25°C (68-77°F). This temperature range helps maintain the product's effectiveness.

When handling the product, be sure to check the printed foil under the cap. If it is broken or missing, do not use the product, as this could compromise its safety and effectiveness. Always prioritize these storage and handling guidelines to ensure your safety and the product's reliability.

Additional Information

You should take this medication orally, with a full glass of water. If you are an adult or a child aged 12 years and older, the recommended dose is 1 tablet every 12 hours, with a maximum of 2 tablets in a 24-hour period. If you are under 12 years old, do not use this medication.

It's important to swallow the tablet whole—do not crush, chew, or break it. You can take this medication without worrying about meal times.

FAQ

What is KIRKLAND Signature MUCUS-DM?

KIRKLAND Signature MUCUS-DM is a maximum strength medication containing 1200 mg of Guaifenesin and 60 mg of Dextromethorphan Hydrobromide in extended-release tablets.

How does KIRKLAND Signature MUCUS-DM work?

It helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive, while also temporarily relieving cough due to throat and bronchial irritation.

Who can use KIRKLAND Signature MUCUS-DM?

Adults and children 12 years and older can use 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 12 hours, with a maximum of 2 tablets in 24 hours.

Are there any contraindications for using this medication?

Yes, do not use if you are taking a prescription monoamine oxidase inhibitor (MAOI) or if you are under 12 years of age.

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

Stop use and ask a doctor if your cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache.

Can I take KIRKLAND Signature MUCUS-DM if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using this product.

How should I take KIRKLAND Signature MUCUS-DM?

Take the tablet with a full glass of water and do not crush, chew, or break it. It can be taken without regard for meals.

What should I do in case of an overdose?

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

Packaging Info

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

Packaging configurations for Kirkland Signature Mucus Dm.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

KIRKLAND Signature Maximum Strength MUCUS-DM is formulated to provide effective relief from cough and mucus congestion. Each extended-release tablet contains 1200 mg of guaifenesin, an expectorant that thins and loosens mucus, and 60 mg of dextromethorphan hydrobromide, a cough suppressant. This combination is designed to control cough and facilitate mucus clearance over a 12-hour period. The product is available in a package containing 84 extended-release tablets, each designed for optimal dosing and efficacy.

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 making coughs more productive.

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

The tablet should be taken whole; it must not be crushed, chewed, or broken. It is recommended that the tablet be ingested with a full glass of water. 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 tablet every 12 hours, with a maximum of 2 tablets in a 24-hour period. The use of this product is not recommended for 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 contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI) or within 2 weeks of discontinuing such medication. MAOIs are commonly prescribed for depression, psychiatric or emotional conditions, and Parkinson’s disease. Patients should consult a healthcare professional if uncertain about the presence of an MAOI in their current medication regimen.

Warnings and Precautions

The use of this product is contraindicated in children under 12 years of age. Additionally, it must not be administered to individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within two weeks of discontinuing such medication. MAOIs are commonly prescribed for depression, psychiatric or emotional conditions, and Parkinson’s disease. Healthcare professionals should advise patients to consult a doctor or pharmacist if they are uncertain whether their prescription includes an MAOI.

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 experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare professional.

In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center should be contacted at 1-800-222-1222.

Patients should be instructed to discontinue use and consult a healthcare provider if their cough persists for more than 7 days, recurs, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Side Effects

Patients should discontinue use and consult a healthcare professional if a cough persists for more than 7 days, recurs, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Before initiating treatment, patients are advised to seek medical advice if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, those experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare provider prior to use.

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 minimum 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 medication contains an MAOI before initiating treatment with this product.

Packaging & NDC

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

Packaging configurations for Kirkland Signature Mucus Dm.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For adolescents aged 12 years and older, the recommended dosage is 1 tablet every 12 hours, with a maximum of 2 tablets in a 24-hour period.

It is essential to keep this medication out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or contact a Poison Control Center at 1-800-222-1222.

Geriatric Use

There is no specific information 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. Monitoring for potential adverse effects and therapeutic efficacy is recommended in this population, given the lack of targeted data.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. It is important to evaluate the potential risks and benefits associated with its use during pregnancy and lactation. The safety of this medication in pregnant women has not been established, and caution is advised to ensure the well-being of both the mother and the fetus.

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 drug 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 prescribing information 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 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 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 and monitoring of the patient are essential.

Management procedures may include supportive care and symptomatic treatment, tailored to the specific symptoms presented. It is recommended that healthcare providers remain vigilant and prepared to implement appropriate interventions based on the clinical presentation of the patient.

Nonclinical Toxicology

If pregnant or breast-feeding, 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 identified several adverse reactions reported voluntarily or through surveillance programs. These include dizziness, nausea, and vomiting. Allergic reactions such as rash, pruritus, and urticaria have also been noted. Additional events include confusion, hallucinations, and respiratory depression. Cases of serotonin syndrome have been reported, particularly in patients using concomitant serotonergic drugs. Cardiovascular effects such as increased heart rate and elevated blood pressure have been observed. Hepatotoxicity has been documented in instances of excessive use. Furthermore, other unspecified reactions have been reported.

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 be informed that this product should not be used for 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 illness.

Patients must be reminded to adhere strictly to the recommended dosage and not exceed the directed amount when using this product. Additionally, healthcare providers should advise 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. It is also advisable for patients to seek medical advice if their cough is accompanied by excessive phlegm (mucus).

Storage and Handling

The product is supplied in a configuration that includes specific NDC numbers, which should be referenced for accurate identification. It is essential to store the product at a temperature range of 20-25°C (68-77°F) to maintain its integrity and efficacy.

Healthcare professionals are advised to inspect the product prior to use; it should not be utilized if the printed foil under the cap is broken or missing, as this may indicate compromised safety or quality. Proper handling and storage conditions are crucial to ensure the product remains effective and safe for patient use.

Additional Clinical Information

The medication is administered orally, with a recommended dosage of one tablet every 12 hours for adults and children aged 12 years and older, not exceeding two tablets within a 24-hour period. It is contraindicated for children under 12 years of age. Patients should take the tablet with a full glass of water and are advised not to crush, chew, or break the tablet. The product can be taken without regard to meal timing.

Drug Information (PDF)

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

View product document (PDF)

Data Generation & Sources

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

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

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

No human clinician has reviewed this version.

Learn more in our Editorial Policy

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.