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Mucus Relief Er

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Active ingredient
Guaifenesin 600 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 2018
Label revision date
December 18, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Guaifenesin 600 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 2018
Label revision date
December 18, 2025
Manufacturer
Cardinal Health 107, LLC
Registration number
ANDA207342
NDC root
55154-4153
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

MUCUS RELIEF ER is a medication that contains guaifenesin (an expectorant) in a 600 mg dosage. It is designed to help loosen phlegm (mucus) and thin bronchial secretions, making it easier for you to clear mucus from your airways. By doing so, it helps make your coughs more productive, allowing you to rid your bronchial passageways of bothersome mucus. This can be particularly helpful when you're dealing with respiratory issues that involve congestion.

Uses

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

Additionally, there are no teratogenic effects (which means it doesn't cause birth defects) or nonteratogenic effects noted, making it a safer option for those concerned about these risks.

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 and older, the recommended dosage is 1 or 2 tablets every 12 hours. However, be careful not to exceed 4 tablets in a 24-hour period. If you have children under 12, 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, 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. Additionally, if you have a chronic cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough comes with excessive mucus, you should speak with a healthcare professional before using this product.

Please note that this medication is not recommended for children under 12 years old. In the event of an overdose, seek medical assistance immediately or contact a Poison Control Center at 1-800-222-1222.

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 your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, stop taking 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 contact 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 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 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 your kidneys are not functioning properly.

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 help monitor your condition and make any necessary adjustments to your treatment plan.

Hepatic Impairment

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

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

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications or tests you may be taking. While there are no specific drug interactions or laboratory test interactions noted for this medication, your healthcare provider can help ensure that everything you are taking works well together and is safe for you. Always 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 and safety of your product, store it at a temperature between 20º to 25ºC (68º to 77ºF). This temperature range helps maintain the integrity of the device.

When handling the product, always do so with clean hands and in a clean environment to prevent contamination. If you have any specific disposal instructions, be sure to follow them carefully to ensure safety.

Additional Information

You can take this medication orally, with the recommended dosage for adults and children aged 12 and older being 1 or 2 tablets every 12 hours. It's important not to exceed 4 tablets in a 24-hour period to ensure your safety and effectiveness of the treatment. If you have any questions about your dosage or how to take the medication, be sure to consult your healthcare provider.

FAQ

What is MUCUS RELIEF ER?

MUCUS RELIEF ER is an expectorant that contains 600 mg of guaifenesin, which helps loosen phlegm and thin bronchial secretions.

How should I take MUCUS RELIEF ER?

You should take 1 or 2 tablets every 12 hours with a full glass of water, and do not exceed 4 tablets in 24 hours.

Can children use MUCUS RELIEF ER?

No, MUCUS RELIEF ER should not be used for children under 12 years of age.

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

You should stop using MUCUS RELIEF ER and ask a doctor if your cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache.

Is it safe to use MUCUS RELIEF ER during pregnancy or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using MUCUS RELIEF ER.

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.

Are there any contraindications for MUCUS RELIEF ER?

There are no specific contraindications mentioned for MUCUS RELIEF ER.

What are the storage conditions for MUCUS RELIEF ER?

Store MUCUS RELIEF ER between 20º to 25ºC (68º to 77ºF).

Packaging Info

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

Packaging configurations for Mucus Relief Er.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

No description information is available for the specified drug.

Uses and Indications

This drug is indicated for the management of conditions associated with excessive mucus production in the respiratory tract. It helps to loosen phlegm (mucus) and thin bronchial secretions, facilitating the clearance of mucus from the bronchial passageways and making coughs more productive.

There are no teratogenic or nonteratogenic effects associated with this drug, indicating its safety profile in these contexts.

Dosage and Administration

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

For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours. The total daily dosage should not exceed 4 tablets within a 24-hour period.

This product is not recommended 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 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.

Patients are instructed to discontinue use and contact 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.

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. Prompt action is essential to ensure patient safety and appropriate management of the situation.

Side Effects

Patients should be aware of the potential adverse reactions associated with the use of this medication. Serious adverse reactions may necessitate immediate medical attention. Patients are advised to stop use and consult a doctor if a cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms could indicate a serious underlying illness.

Before using this medication, patients should seek medical advice if they have a persistent or chronic cough, such as that associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, those experiencing a cough accompanied by excessive phlegm (mucus) should also consult a healthcare professional prior to use.

It is important to note that this medication is not recommended for children under 12 years of age. In the event of an overdose, patients should seek medical help or contact a Poison Control Center immediately at 1-800-222-1222.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there is no information available regarding interactions with laboratory tests. As such, no specific recommendations for dosage adjustments or monitoring are warranted at this time.

Packaging & NDC

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

Packaging configurations for Mucus Relief Er.
Details

Pediatric Use

Pediatric patients under 12 years of age should not be administered this medication. There is insufficient data to support its safety and efficacy in this age group. Therefore, healthcare professionals are advised to avoid prescribing this treatment to children younger than 12 years.

Geriatric Use

There is no specific information available 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. It is advisable to monitor these patients closely for any adverse effects or changes in efficacy.

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 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 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 no specific information regarding dosage adjustments, special monitoring, or safety considerations provided in the drug insert. Therefore, healthcare professionals should exercise caution when prescribing this medication to individuals with reduced kidney function, as the lack of data necessitates careful clinical judgment.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this medication. Consequently, there are no established dosage adjustments, special monitoring requirements, or precautions outlined for individuals with compromised liver function. It is recommended that healthcare providers exercise caution when prescribing this medication to patients with hepatic impairment, given the lack of data on its safety and efficacy in this population. Regular monitoring of liver function may be prudent in these cases, although specific parameters are not defined in the prescribing information.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay. Healthcare professionals should advise patients or caregivers to call the Poison Control Center at 1-800-222-1222 for guidance.

Prompt intervention is crucial in managing overdose situations, as timely medical support can significantly influence outcomes. Symptoms of overdose 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

No information is available regarding teratogenic or non-teratogenic effects. Additionally, there is no data provided concerning nonclinical toxicology, animal pharmacology, or toxicology.

Postmarketing Experience

No postmarketing experience details are available in the insert text.

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 doctor 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, particularly if it is associated with smoking, asthma, chronic bronchitis, or emphysema. Patients should also be advised to seek medical advice 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 20º to 25ºC (68º to 77ºF) to maintain its efficacy and stability. 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 integrity.

Additional Clinical Information

The medication is administered orally. For adults and children aged 12 years and older, the recommended dosage is 1 or 2 tablets every 12 hours, with a maximum limit of 4 tablets within a 24-hour period. No further information is available regarding laboratory tests, abuse potential, patient counseling, or postmarketing experience.

Drug Information (PDF)

This file contains official product information for Mucus Relief Er, 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 Er, 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.