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Mucus Relief Extended Release

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Active ingredient
Guaifenesin 1200 mg
Other brand names
Drug class
Expectorant
Dosage form
Tablet
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2018
Label revision date
August 28, 2025
Active ingredient
Guaifenesin 1200 mg
Other brand names
Drug class
Expectorant
Dosage form
Tablet
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2018
Label revision date
August 28, 2025
Manufacturer
Walgreens
Registration number
ANDA207342
NDC root
0363-0832

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Drug Overview

Guaifenesin Extended-Release is a medication designed to provide relief from chest congestion. It comes in the form of 1200 mg tablets and acts as an expectorant, which means it helps loosen phlegm (mucus) and thin bronchial secretions. By doing so, it makes coughs more productive, allowing you to clear bothersome mucus from your bronchial passageways more effectively.

This maximum strength formula is intended to provide relief for up to 12 hours, helping you breathe easier and feel more comfortable when dealing with congestion. If you're experiencing chest congestion, Guaifenesin Extended-Release may be a helpful option to consider.

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.

If you're experiencing chest congestion, this medication can provide relief by thinning and loosening mucus, allowing for easier breathing and comfort.

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 old, this medication is not suitable for them, so please avoid using it for that age group.

What to Avoid

It's important to be aware of specific guidelines when considering this medication. You should not use it for children under 12 years of age, as it may not be safe for them.

Currently, there are no specified contraindications, controlled substance classifications, or noted risks of abuse, misuse, or dependence (a condition where your body becomes reliant on a substance). Always consult with your healthcare provider if you have any questions or concerns about using this medication.

Side Effects

If you experience a cough that lasts more than 7 days, returns after improvement, or is accompanied by fever, rash, or a persistent headache, it’s important to stop using the medication and consult your doctor. These symptoms could indicate a more serious health issue that requires attention.

Warnings and Precautions

You should not use this medication if you are under 12 years old. Before taking it, consult your doctor if you have a long-lasting cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is producing a lot of mucus.

If your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, stop using the medication and contact your doctor, as these may indicate a more serious condition. In the event of an overdose, seek emergency medical help immediately or call a Poison Control Center at 1-800-222-1222.

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 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 one tablet every 12 hours, with a maximum of two tablets in a 24-hour period.

Always consult with a healthcare professional if you have questions about using this medication for your child or if you need alternatives for younger children.

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 drug insert does not provide specific information about dosage adjustments, special monitoring, or safety considerations for your condition. This means that there are no tailored guidelines for how this medication may affect you if you have renal impairment (kidney issues).

Before starting any new medication, including this one, it's crucial to discuss your kidney health with your healthcare provider. They can help determine the best approach for your treatment and ensure your safety.

Hepatic Impairment

If you have liver problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or precautions for your condition. This means that there are no tailored guidelines for how this medication should be used if you have hepatic impairment (liver issues).

Before starting any new medication, including this one, you should discuss your liver health with your healthcare provider. They can help determine the best approach for your treatment and ensure your safety.

Drug Interactions

It's great to know that there are no reported interactions between this medication and other drugs or laboratory tests. However, it's still very important to discuss all medications you are taking, including over-the-counter drugs and supplements, with your healthcare provider. This ensures that your treatment is safe and effective.

Always keep your healthcare provider informed about any changes in your health or medications. They can help you understand how different treatments may work together and monitor your health appropriately.

Storage and Handling

To ensure the best performance of your product, store it in a cool, dry place at a temperature between 20º to 25ºC (68º to 77ºF). 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 sterile field (a clean area free from germs) to prevent contamination. Always follow any specific disposal instructions provided to ensure safe and responsible disposal of any components.

Additional Information

You should take this medication as directed: swallow the tablet whole with a full glass of water—do not crush, chew, or break it. For adults and children aged 12 and over, the recommended dose is one tablet every 12 hours, with a maximum of two tablets in a 24-hour period. If you are under 12 years old, do not use this product. You can take it without worrying about meal times.

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

FAQ

What is Guaifenesin Extended-Release used for?

Guaifenesin Extended-Release helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive and relieving chest congestion.

How should I take Guaifenesin Extended-Release?

You should take 1 tablet every 12 hours with a full glass of water. Do not crush, chew, or break the tablet, and do not exceed 2 tablets in 24 hours.

Is Guaifenesin Extended-Release safe for children?

No, Guaifenesin Extended-Release should not be used for children under 12 years of age.

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 ask a doctor, as these could be signs of a serious illness.

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 using Guaifenesin Extended-Release.

What are the storage conditions for Guaifenesin Extended-Release?

Store Guaifenesin Extended-Release between 20º to 25ºC (68º to 77ºF).

What should I do in case of an overdose?

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

Packaging Info

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

Packaging configurations for Mucus Relief Extended Release.
Details

Drug Information (PDF)

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

View product document (PDF)

Uses and Indications

This drug is indicated for the relief of chest congestion by helping to loosen phlegm (mucus) and thin bronchial secretions. It facilitates the clearance of bothersome mucus from the bronchial passageways, thereby making coughs more productive.

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

Dosage and Administration

The tablet should be taken whole; it must not be crushed, chewed, or broken. It is recommended to administer the tablet with a full glass of water. This product can be taken 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. The maximum allowable dosage is 2 tablets within a 24-hour period.

This product is not indicated for use in children under 12 years of age.

Contraindications

Use is contraindicated in children under 12 years of age due to safety concerns associated with this population. No other contraindications have been specified.

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 if it is associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, patients should be cautioned against using this medication if their cough is accompanied by excessive phlegm (mucus).

Patients are instructed to discontinue use and seek medical advice if their 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.

In the event of an overdose, it is imperative to seek emergency medical assistance immediately or contact a Poison Control Center at 1-800-222-1222. Prompt action is essential to ensure patient safety and appropriate management of the situation.

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. These symptoms may indicate the presence of a serious underlying illness that requires medical evaluation.

Drug Interactions

No drug interactions have been identified in the available data. Additionally, there are no reported interactions between drugs and laboratory tests. Therefore, no dosage adjustments or monitoring recommendations are necessary based on the current information.

Packaging & NDC

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

Packaging configurations for Mucus Relief Extended Release.
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. Caution is advised when prescribing to younger populations, as safety and efficacy have not been established in children under 12 years.

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.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. The potential risks and benefits must be carefully considered in these populations to ensure the safety of both the mother and the fetus or infant.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is no specific data available regarding the excretion of this medication in breast milk or its effects on breastfed infants. Therefore, caution is recommended when administering this medication to lactating individuals.

Renal Impairment

There is no specific information regarding renal impairment, dosage adjustments, special monitoring, or safety considerations for patients with reduced kidney function provided in the drug insert. Healthcare professionals should exercise caution when prescribing this medication 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 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 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 scenario.

Nonclinical Toxicology

The available nonclinical data does not indicate any teratogenic or non-teratogenic effects associated with the substance. Additionally, there are no findings related to animal pharmacology and toxicology provided in the available studies. As such, there is no evidence of carcinogenicity or mutagenicity reported in the nonclinical assessments. Further investigation may be warranted to fully characterize the safety profile of the substance in nonclinical settings.

Postmarketing Experience

No postmarketing experience details are provided in the insert.

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

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

Additionally, healthcare providers should encourage patients to consult with a doctor prior to using this medication if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema, or if their cough is accompanied by excessive phlegm (mucus). This will help ensure the safe and effective use of the medication.

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 20º to 25ºC (68º to 77ºF) to maintain its integrity and efficacy. Proper storage conditions must be adhered to, ensuring that the product is kept in a suitable container that protects it from environmental factors. Special handling requirements should be observed to prevent any compromise to the product's quality.

Additional Clinical Information

Patients should be advised on the proper administration of the medication, which includes taking the tablet whole with a full glass of water and not crushing, chewing, or breaking it. The recommended dosage for adults and children aged 12 years and older is one tablet every 12 hours, with a maximum of two tablets in a 24-hour period. The medication can be taken without regard to meal timing, and it is not recommended for children under 12 years of age.

Clinicians should counsel patients who are pregnant or breastfeeding to consult a health professional before use. In the event of an overdose, patients should seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222. No additional information is available regarding laboratory tests, abuse potential, or postmarketing experience.

Drug Information (PDF)

This file contains official product information for Mucus Relief Extended Release, 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 Extended Release, 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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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.