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Mucus Relief Severe Congestion and Cough

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Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
  • Phenylephrine Hydrochloride 10 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist, alpha-1 Adrenergic Agonist
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2021
Label revision date
December 16, 2025
Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
  • Phenylephrine Hydrochloride 10 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist, alpha-1 Adrenergic Agonist
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2021
Label revision date
December 16, 2025
Manufacturer
Harris Teeter, LLC
Registration number
M012
NDC root
69256-337

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If you are a consumer or patient please visit this version.

Drug Overview

Maximum Strength Mucus Relief is a medication designed to help you manage symptoms associated with colds and respiratory irritations. It contains three active ingredients: dextromethorphan HBr, which acts as a cough suppressant to reduce the urge to cough; guaifenesin, an expectorant that helps loosen phlegm (mucus) and thin bronchial secretions, making it easier to clear mucus from your airways; and phenylephrine HCl, a nasal decongestant that relieves nasal congestion.

This product is intended for individuals aged 12 years and older and provides multi-symptom relief by controlling cough, alleviating nasal and chest congestion, and thinning mucus to make coughs more productive. It can help you feel more comfortable and may even assist you in getting a better night's sleep by reducing coughing.

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 coughs 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. Additionally, it can relieve nasal congestion associated with a cold.

Dosage and Administration

When using this medication, it's important to follow the dosing instructions carefully to ensure your safety and effectiveness. For adults and children aged 12 years and older, you should take 20 mL (milliliters) using the dosing cup provided every 4 hours. Make sure to shake the bottle well before each use to mix the medication properly.

You should not take more than 6 doses within a 24-hour period, and it's crucial to only use the dosing cup that comes with the product—do not use any other measuring device. Keep the dosing cup with the medication to avoid any confusion. If you have children under 12 years of age, 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 currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression, psychiatric conditions, or Parkinson's disease. Additionally, you should not take this product for at least two weeks after stopping an MAOI. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist. This product is also not suitable for children under 12 years of age.

It's important to follow the dosage instructions carefully and not exceed the recommended amount. Always prioritize your safety and well-being by adhering to these guidelines.

Side Effects

If you experience nervousness, dizziness, or trouble sleeping while using this medication, it's important to stop taking it and consult your doctor. Additionally, if your symptoms do not improve within seven days, or if they are accompanied by a fever, you should seek medical advice. A returning cough, especially if it comes with fever, rash, or a persistent headache, may indicate a more serious condition that requires attention.

Warnings and Precautions

You should not use this medication if you are currently taking a prescription monoamine oxidase inhibitor (MAOI) for depression, psychiatric conditions, or Parkinson's disease, or if you have stopped taking an MAOI within the last two weeks. Additionally, this product is not suitable for children under 12 years of age.

Before using this medication, consult your doctor if you have any of the following conditions: heart disease, high blood pressure, thyroid disease, diabetes, difficulty urinating due to an enlarged prostate, or a chronic cough related to smoking, asthma, chronic bronchitis, or emphysema. If you experience an overdose, seek emergency medical help immediately or contact a Poison Control Center at 1-800-222-1222.

You should stop taking this medication and call your doctor if you experience nervousness, dizziness, or sleeplessness, if your symptoms do not improve within 7 days or are accompanied by a fever, or if your cough returns with fever, rash, or a persistent headache. These symptoms may indicate a more serious condition that requires medical attention.

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 health and safety are 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 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 20 mL taken every 4 hours using the dosing cup provided. Always follow these guidelines to ensure the safety and well-being of your child.

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 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, especially if you have any concerns about your kidney health. They can provide guidance based on your individual situation.

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 be cautious about combining medications. If you are currently taking a prescription monoamine oxidase inhibitor (MAOI), or if you have stopped taking one within the last two weeks, you should not use this medication. Mixing these drugs can lead to serious interactions that could affect your health.

Always discuss any medications you are taking, including over-the-counter drugs and supplements, with your healthcare provider. They can help ensure that your treatment is safe and effective, minimizing the risk of harmful interactions.

Storage and Handling

To ensure the best performance of your product, store it at room temperature, specifically between 20-25ºC (68-77ºF). It's important to avoid refrigeration, as this can affect its effectiveness.

When handling the product, make sure to do so in a clean environment to maintain its integrity. Always follow any additional safety instructions provided to ensure safe and effective use.

Additional Information

You should take this medication orally. If you are pregnant or breastfeeding, it’s important to consult with a healthcare professional before using this medication to ensure it’s safe for you and your baby.

FAQ

What is Maximum Strength Mucus Relief used for?

Maximum Strength Mucus Relief helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive and relieving nasal congestion due to a cold.

What are the active ingredients in Maximum Strength Mucus Relief?

The active ingredients are Dextromethorphan HBr (20 mg), Guaifenesin (400 mg), and Phenylephrine HCl (10 mg).

Who should use Maximum Strength Mucus Relief?

This product is intended for adults and children aged 12 years and over. Do not use for children under 12 years of age.

How should I take Maximum Strength Mucus Relief?

Adults and children 12 years and older should take 20 mL every 4 hours using the dosing cup provided. Do not exceed 6 doses in a 24-hour period.

Are there any contraindications for using this medication?

Do not use if you are currently taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI.

What should I do if I experience side effects?

Stop use and ask a doctor if you experience nervousness, dizziness, sleeplessness, or if symptoms do not improve within 7 days.

Is it safe to use Maximum Strength Mucus Relief during pregnancy or breastfeeding?

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

How should I store Maximum Strength Mucus Relief?

Store the product between 20-25ºC (68-77ºF) and do not refrigerate.

Packaging Info

Below are the non-prescription pack sizes of Mucus Relief Severe Congestion and Cough (dextromethorphan hydrobromide, guaifenesin, phenylephrine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Severe Congestion and Cough.
Details

Drug Information (PDF)

This file contains official product information for Mucus Relief Severe Congestion and Cough, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Description

No Description information provided.

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 helps to loosen phlegm (mucus) and thin bronchial secretions, facilitating the clearance of bothersome mucus and making coughs more productive.

Additionally, this drug temporarily relieves the intensity of coughing and the impulse to cough, aiding in sleep. It also alleviates nasal congestion associated with colds.

There are no teratogenic or nonteratogenic effects reported for this drug.

Dosage and Administration

Healthcare professionals should advise patients to adhere strictly to the following dosage and administration guidelines.

For adults and children aged 12 years and older, the recommended dose is 20 mL, to be measured using the dosing cup provided, every 4 hours as needed. It is imperative that no more than 6 doses are taken within a 24-hour period.

For children under 12 years of age, the product is not recommended for use.

Prior to administration, the product must be shaken well. The dosing cup should be kept with the product to ensure accurate measurement, and no other dosing devices should be utilized.

Contraindications

Use of this product is contraindicated in the following situations:

Patients currently taking a prescription monoamine oxidase inhibitor (MAOI) or those who have discontinued MAOI therapy within the past two weeks. The combination may lead to serious interactions. If there is uncertainty regarding the presence of an MAOI in a prescription medication, consultation with a healthcare professional is advised.

This product is also contraindicated in children under 12 years of age due to safety concerns.

Additionally, it is important to adhere to the recommended dosage and not exceed the directed use.

Warnings and Precautions

Patients should not use 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. Additionally, use is contraindicated for a period of 2 weeks following the discontinuation of an MAOI. If there is uncertainty regarding whether a prescription drug contains an MAOI, it is imperative to consult a healthcare professional, such as a doctor or pharmacist, prior to use.

This product is not recommended for children under 12 years of age.

Healthcare professionals should advise patients to seek medical guidance before using this product if they have any of the following conditions: heart disease, high blood pressure, thyroid disease, diabetes, difficulty urinating due to an enlarged prostate gland, or a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, patients with a cough that produces excessive phlegm (mucus) should also consult a healthcare provider prior to use.

In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center (1-800-222-1222) should be contacted without delay.

Patients are advised to discontinue use and consult a healthcare professional if they experience nervousness, dizziness, or sleeplessness. Furthermore, if symptoms do not improve within 7 days, or if they are accompanied by fever, or if a cough recurs or is associated with fever, rash, or a persistent headache, medical advice should be sought, as these may indicate a serious condition.

Side Effects

Patients should discontinue use and consult a healthcare professional if they experience nervousness, dizziness, or sleeplessness. Additionally, if symptoms do not improve within 7 days or are accompanied by fever, or if a cough recurs or presents with fever, rash, or a persistent headache, these may indicate a serious underlying condition that requires medical attention.

Drug Interactions

The concomitant use of this medication with prescription monoamine oxidase inhibitors (MAOIs) is contraindicated. Patients should not take this medication while on MAOIs or for a period of two weeks following the discontinuation of MAOI therapy. The combination may result in serious interactions that could pose significant health risks. It is essential for healthcare providers to ensure that patients are not concurrently using MAOIs before initiating treatment with this medication.

Packaging & NDC

Below are the non-prescription pack sizes of Mucus Relief Severe Congestion and Cough (dextromethorphan hydrobromide, guaifenesin, phenylephrine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Severe Congestion and Cough.
Details

Pediatric Use

Pediatric patients under 12 years of age should not use this medication. For patients aged 12 years and older, the recommended dosage is 20 mL, administered using the dosing cup provided, every 4 hours. Caution is advised when considering the use of this medication in pediatric populations, as safety and efficacy have not been established in children under the age of 12.

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. It is important to assess the potential risks and benefits, as well as any available data regarding fetal outcomes and maternal health. Healthcare providers should consider the individual circumstances of each patient when making recommendations.

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 drug in human breast milk or its effects on breastfed infants. Therefore, caution is recommended when administering this medication to lactating individuals.

Renal Impairment

There is no specific information regarding renal impairment, dosage adjustments, special monitoring, or safety considerations for patients with reduced kidney function provided in the insert. Healthcare professionals should exercise caution when prescribing to patients with renal impairment, as the absence of detailed guidance necessitates careful clinical judgment and monitoring.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this drug. 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.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance. Healthcare professionals are advised to contact a Poison Control Center at 1-800-222-1222 for guidance on managing the situation effectively.

Prompt intervention is crucial in mitigating potential adverse effects associated with overdose. Symptoms may vary depending on the substance involved, and healthcare providers should be prepared to assess and manage these symptoms accordingly.

Management procedures may include supportive care and symptomatic treatment, tailored to the specific clinical presentation of the patient. Continuous monitoring and evaluation are essential to ensure patient safety and to address any complications that may arise during the course of treatment.

Nonclinical Toxicology

If pregnant or breast-feeding, it is advised to consult a health professional before use. No specific non-teratogenic effects have been identified in the available data. Additionally, there are no detailed findings regarding nonclinical toxicology or animal pharmacology and toxicology provided in the current information.

Postmarketing Experience

No postmarketing experience details are available in the insert.

Patient Counseling

Patients should be advised 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 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. Additionally, patients should refrain from using this product for two weeks after discontinuing an MAOI. If patients are uncertain whether their prescription contains an MAOI, they should be encouraged to consult their doctor or pharmacist.

Healthcare providers should emphasize that this product is not intended for use in children under 12 years of age. Patients should be instructed to discontinue use and consult a doctor if they experience nervousness, dizziness, or sleeplessness. Furthermore, if symptoms do not improve within seven days or are accompanied by fever, patients should be advised to seek medical advice. They should also be informed to stop use and contact a doctor if a cough recurs or is associated with fever, rash, or a persistent headache, as these may indicate a serious condition.

When using this product, patients must be cautioned against exceeding the recommended dosage. It is essential for healthcare providers to encourage patients to consult a doctor prior to use if they have any of the following conditions: heart disease, high blood pressure, thyroid disease, diabetes, or difficulty urinating due to an enlarged prostate gland. Additionally, patients with a persistent or chronic cough, such as that associated with smoking, asthma, chronic bronchitis, or emphysema, should seek medical advice before using this product. Lastly, patients experiencing a cough accompanied by excessive phlegm (mucus) should also be advised to consult a doctor prior to use.

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It is essential to store the product at a temperature range of 20-25ºC (68-77ºF). Refrigeration is not recommended, as it may compromise the integrity of the product. Proper handling and storage conditions must be adhered to in order to maintain product efficacy and safety.

Additional Clinical Information

The medication is administered orally. Clinicians should advise patients who are pregnant or breastfeeding to consult a health professional prior to use. No further information is available regarding laboratory tests, abuse potential, or postmarketing experiences.

Drug Information (PDF)

This file contains official product information for Mucus Relief Severe Congestion and Cough, 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 Severe Congestion and Cough, 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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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.