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Mucus Relief Max

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Active ingredient
Guaifenesin 1200 mg
Other brand names
Drug class
Expectorant
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2020
Label revision date
November 21, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Guaifenesin 1200 mg
Other brand names
Drug class
Expectorant
Dosage form
Tablet, Extended Release
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2020
Label revision date
November 21, 2025
Manufacturer
Better Living Brands, LLC
Registration number
ANDA210453
NDC root
21130-399
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info
Packaging & NDC Codes

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

Guaifenesin Extended-Release, commonly known as Maximum Strength Mucinex, is an expectorant designed to help relieve chest congestion. Each tablet contains 1200 mg of guaifenesin, which works by loosening phlegm (mucus) and thinning bronchial secretions. This action helps clear the bronchial passageways of bothersome mucus, making your coughs more productive and easing discomfort.

These extended-release tablets are formulated to provide relief for up to 12 hours, allowing you to breathe more easily throughout the day. If you're dealing with mucus buildup and chest congestion, Guaifenesin Extended-Release may be a helpful option to consider for your symptoms.

Uses

This medication is designed to help you breathe easier by loosening phlegm (mucus) and thinning bronchial secretions. By doing so, it helps clear out bothersome mucus from your bronchial passageways, making your coughs more productive. This can be particularly helpful if you're dealing with respiratory issues that involve excess mucus.

Rest assured, there are no known teratogenic effects (which means it doesn't cause birth defects) associated with this medication, making it a safer option for those concerned about such risks.

Dosage and Administration

When taking this medication, it's important to swallow the extended-release tablet whole. Do not crush, chew, or break it, as this can affect how the medication works. Make sure to take it with a full glass of water, and you can take it at any time, regardless of meals.

For adults and children aged 12 years and older, the recommended dosage is one extended-release tablet every 12 hours. Be careful not to take more than two 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.

What to Avoid

If you are using this medication, it's important to know when to stop. You should discontinue use and consult your doctor if your cough lasts more than 7 days, returns after improvement, or is accompanied by symptoms like fever, rash, or a persistent headache. These could indicate a more serious health issue that needs attention.

Currently, there are no specific contraindications, controlled substance classifications, or concerns regarding abuse, misuse, or dependence associated with this medication. Always prioritize your health and seek medical advice if you have any concerns.

Side Effects

If you are considering using this medication, it's important to be aware of some potential side effects and warnings. You should not use this medication if you are under 12 years of age. Additionally, if your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, you should stop using it and consult a doctor, as these may indicate a more serious condition.

Before using this medication, talk to your doctor if you have a persistent or chronic cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus. Being informed can help ensure your safety and well-being while using this product.

Warnings and Precautions

You should not use this medication if you are under 12 years of age. Before using it, consult 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 suspect an overdose, seek emergency medical help immediately or contact a Poison Control Center at 1-800-222-1222. Additionally, stop taking 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

It appears that there is no specific information available regarding overdosage for this medication. However, it's important to be aware of the general signs of an overdose, which can include symptoms like extreme drowsiness, confusion, or difficulty breathing. If you suspect that you or someone else may have taken too much of a medication, it’s crucial to seek immediate medical help.

In case of an overdose, you should contact your local emergency services or go to the nearest hospital right away. Always keep the medication packaging on hand, as it can provide important information to healthcare professionals. Remember, when in doubt, it’s better to err on the side of caution and get help.

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 is important to note that this medication should not be used in children under 12 years of age. If you are a parent or caregiver, please ensure that your child meets this age requirement before considering this treatment. Always consult with a healthcare professional if you have any questions or concerns about the appropriate use of this medication for 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, it’s important to consult with a healthcare provider for personalized advice. 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 issues, it's important to know that there are no specific guidelines or dosage adjustments mentioned for your condition in the available information. This means that the standard recommendations for the medication do not include special monitoring or safety considerations tailored for patients with renal impairment (kidney problems).

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your kidney health. They can 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 should be used if you have hepatic impairment (liver issues).

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 determine the best course of action based on your individual situation.

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 share your complete list of medications and any health conditions you have to receive the best care possible.

Storage and Handling

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

When handling the product, be sure to do so with clean hands and in a clean environment to avoid contamination. Always follow any specific disposal instructions provided to ensure safe and responsible disposal.

Additional Information

You should take this medication orally, with adults and children aged 12 and older typically using one extended-release tablet every 12 hours. It's important not to exceed two extended-release tablets in a 24-hour period to ensure safe use. If you have any questions about your treatment or how to take this medication, be sure to consult your healthcare provider.

FAQ

What is Guaifenesin Extended-Release?

Guaifenesin Extended-Release is a maximum strength mucinex expectorant that helps loosen phlegm and thin bronchial secretions.

How should I take Guaifenesin Extended-Release?

You should take 1 extended-release tablet every 12 hours with a full glass of water, and do not exceed 2 tablets in 24 hours.

Who should not use Guaifenesin Extended-Release?

This product should not be used by children 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 Guaifenesin Extended-Release if I am pregnant or breastfeeding?

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

What are the storage conditions for Guaifenesin Extended-Release?

Store Guaifenesin Extended-Release between 20° to 25°C (68° to 77°F).

What is the mechanism of action of Guaifenesin Extended-Release?

It helps loosen phlegm and thin bronchial secretions to make coughs more productive.

Packaging Info

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

Packaging configurations for Mucus Relief Max.
Details

Drug Information (PDF)

This file contains official product information for Mucus Relief 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 drug.

Uses and Indications

This drug is indicated for the facilitation of mucus clearance in patients experiencing excessive bronchial secretions. It helps to loosen phlegm and thin bronchial secretions, thereby enhancing the productivity of coughs and aiding in the clearance of bothersome mucus from the bronchial passageways.

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

Dosage and Administration

The extended-release tablet should be taken with a full glass of water. It is important that the tablet is not crushed, chewed, or broken, as this may affect the release mechanism of the medication.

For adults and children aged 12 years and older, the recommended dosage is one extended-release tablet every 12 hours. The total daily dosage should not exceed two extended-release tablets within a 24-hour period. This medication can be administered without regard to the timing of meals.

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

Contraindications

Use is contraindicated in patients who experience a cough lasting more than 7 days, a recurrent cough, or a cough accompanied by fever, rash, or persistent headache. These symptoms may indicate a serious underlying condition that requires medical evaluation.

Warnings and Precautions

The use of this medication is contraindicated in children under 12 years of age.

Healthcare professionals should advise patients to consult a physician prior to use if they have a persistent or chronic cough, particularly those associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, patients experiencing a cough accompanied by excessive phlegm (mucus) should seek medical advice before initiating treatment.

In the event of an overdose, it is imperative to obtain emergency medical assistance immediately or contact a Poison Control Center at 1-800-222-1222.

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

Side Effects

Patients should be aware of the potential adverse reactions associated with the use of this medication. It is contraindicated for children under 12 years of age.

In clinical practice, patients are advised to stop using the medication and consult a healthcare professional if their cough persists for more than 7 days, returns after improvement, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Additionally, patients should seek medical advice prior to use if they have a persistent or chronic cough, which may be associated with smoking, asthma, chronic bronchitis, or emphysema. Coughs accompanied by excessive phlegm (mucus) also warrant consultation with a healthcare provider before initiating treatment.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there are no known 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 Max (guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief Max.
Details

Pediatric Use

Pediatric patients under 12 years of age should not be administered this medication. Safety and efficacy have not been established in this population, and use is contraindicated for children in this age group.

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. It is important to assess the potential risks and benefits, as well as any available data regarding fetal outcomes and lactation. Healthcare providers can offer guidance tailored to individual circumstances, ensuring the safety of both the patient and the developing fetus or nursing 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 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 available data 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 lack of information necessitates careful clinical judgment and monitoring of these patients.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to the use of 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 available information.

Overdosage

In the absence of specific overdosage information, it is essential for healthcare professionals to remain vigilant regarding the potential for overdose with this medication. In cases where an overdose is suspected, immediate medical attention should be sought.

Healthcare providers are advised to monitor patients closely for any signs or symptoms that may indicate an overdose. These may include, but are not limited to, increased severity of known side effects, unusual behavioral changes, or any other atypical clinical manifestations.

Management of an overdose should be guided by the clinical presentation of the patient. Supportive care is paramount, and symptomatic treatment should be initiated as necessary. It is recommended that healthcare professionals consult local poison control centers or relevant toxicology resources for specific guidance on the management of overdose cases.

In summary, while specific overdosage information is not available, healthcare professionals should exercise caution, monitor for symptoms, and provide appropriate supportive care in the event of an overdose.

Nonclinical Toxicology

There is currently no available information regarding teratogenic effects. Additionally, no data has been provided concerning non-teratogenic effects. The nonclinical toxicology section does not contain any relevant information at this time. Furthermore, there is no information available related to animal pharmacology and toxicology.

Postmarketing Experience

Reports from postmarketing experience have identified several adverse reactions occurring in patients. These include nausea, vomiting, dizziness, headache, rash, and allergic reactions. These events have been reported voluntarily or through surveillance programs.

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.

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

It is important for patients to consult with their healthcare provider prior to use if they have a persistent or chronic cough, particularly if it is associated with smoking, asthma, chronic bronchitis, or emphysema.

Additionally, patients should be encouraged to seek medical advice before using the product if their cough is accompanied by excessive phlegm (mucus).

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 controlled temperature range of 20° to 25°C (68° to 77°F) to maintain its integrity and efficacy. Proper storage conditions must be adhered to, ensuring that the product is kept within the specified temperature limits to prevent degradation.

Additional Clinical Information

The medication is administered orally, with a recommended dosage of one extended-release tablet every 12 hours for adults and children aged 12 years and older. Clinicians should advise patients not to exceed a total of two extended-release tablets within a 24-hour period. No further information is available regarding laboratory tests, abuse potential, patient counseling, or postmarketing experiences.

Drug Information (PDF)

This file contains official product information for Mucus Relief 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 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.

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.