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Mucus Relief

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Active ingredient
Guaifenesin 400 mg
Other brand names
Dosage form
Tablet
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2022
Label revision date
July 3, 2025
Active ingredient
Guaifenesin 400 mg
Other brand names
Dosage form
Tablet
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2022
Label revision date
July 3, 2025
Manufacturer
TWIN MED LLC
Registration number
M012
NDC root
55681-311

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Drug Overview

Guai 400 is a medication 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 breathe more comfortably. This can be particularly helpful if you're dealing with congestion or respiratory issues.

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.

Additionally, it makes your coughs more productive, meaning that when you do cough, it can help you expel mucus more effectively. This can be particularly helpful if you're dealing with respiratory issues that involve congestion.

Dosage and Administration

If you are an adult or a child aged 12 years and older, you should take 1 tablet every 4 hours as needed while your symptoms continue. It’s important to drink a full glass of water with each tablet to help it work effectively. However, make sure not to take more than 6 tablets in a 24-hour period to avoid any potential side effects.

For children under 12 years of age, this medication is not recommended, so please do not use it for younger children. Always follow these guidelines to ensure safe and effective use of the medication.

What to Avoid

It's important to use this medication responsibly to ensure your safety and well-being. You should never exceed the recommended dosage, as doing so can lead to unwanted effects. Additionally, it's advised not to use this medication for more than 7 days. Following these guidelines will help you avoid potential risks and ensure the medication works effectively for you. Always consult with your healthcare provider if you have any questions or concerns about your treatment.

Side Effects

It's important to be aware of potential side effects when using this product. You should consult a doctor if you have a persistent cough due to conditions like smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus.

While using this product, do not exceed the recommended dosage or use it for more than 7 days. If your cough lasts longer than 7 days, comes back, or is accompanied by symptoms like fever, rash, or a persistent headache, stop using the product and seek medical advice, as these may indicate a more serious condition. If you are pregnant or breastfeeding, please consult a healthcare professional before use. Always keep this product out of reach of children, and in case of an overdose, seek medical help immediately or contact a Poison Control Center at 1-800-222-1222.

Warnings and Precautions

Before using this medication, it's important to consult your doctor if you have a persistent or chronic cough, especially if it's related to smoking, asthma, chronic bronchitis, or emphysema. Additionally, if your cough comes with excessive phlegm (mucus), you should also seek medical advice.

Make sure to follow the recommended dosage and avoid using the medication for more than 7 days. If your cough lasts longer than a week, comes back, or is accompanied by symptoms like fever, rash, or a persistent headache, stop using the medication and contact your doctor, as these could indicate a more serious issue.

In case of an overdose, seek emergency medical help right away or contact a Poison Control Center at 1-800-222-1222. Your health and safety are important, so please take these precautions seriously.

Overdose

If you suspect an overdose, it’s crucial to seek medical help right away. You can contact a Poison Control Center at 1-800-222-1222 for immediate assistance. Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing.

Don’t wait for symptoms to worsen; getting prompt medical attention can be vital. Always keep emergency contact information handy and be aware of the signs of overdose to ensure your safety and well-being.

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 medication for children. If your child is under 12 years old, you should not use this medication. For those aged 12 and older, the recommended dosage is one tablet every four hours, taken with a full glass of water, as long as symptoms continue. However, make sure not to exceed six doses in a 24-hour period.

Always keep this medication out of reach of children to prevent accidental ingestion. If you have any concerns or questions about using this medication for your child, consult with a healthcare professional.

Geriatric Use

When it comes to using this medication in older adults, there is no specific information available about how it may affect you or if any dosage adjustments are necessary. This means that the usual guidelines for safety and precautions that often apply to elderly patients are not detailed in the insert.

If you are an older adult or a caregiver, it's important to consult with a healthcare professional before starting this medication. They can provide personalized advice and ensure that it is safe and appropriate for your specific health needs.

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 be adjusted based on your kidney function.

Always consult your healthcare provider for personalized advice and to ensure that your treatment plan is safe and effective for your specific situation. They can help monitor your kidney health and make any necessary changes to your medications.

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).

Always consult your healthcare provider for personalized advice and to discuss any concerns regarding your liver health and how it may relate to your treatment. They can help ensure that you receive the safest and most effective care.

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications you are taking, even if there are no specific drug interactions or laboratory test interactions noted for your treatment. This ensures that your healthcare team can monitor your health effectively and make informed decisions about your care.

Always feel free to ask questions and share any concerns you may have regarding your medications or tests. Your safety and well-being are the top priorities, and your healthcare provider is there to help you navigate your treatment plan.

Storage and Handling

To ensure the best performance of your product, store it at a temperature of 25°C (77°F), allowing for brief periods between 15°-30°C (59°-86°F). It's important to keep the product in a dry location and avoid exposing it to heat, as this can affect its effectiveness.

When handling the product, always do so with clean hands and in a clean environment to maintain its integrity. Following these guidelines will help ensure that you use the product safely and effectively.

Additional Information

No further information is available.

FAQ

What is Guai 400 used for?

Guai 400 helps loosen phlegm (mucus) and thin bronchial secretions, making coughs more productive.

What is the recommended dosage for adults and children over 12?

Adults and children 12 years of age and over should take 1 tablet every 4 hours with a full glass of water, not exceeding 6 doses in 24 hours.

Can children under 12 use Guai 400?

No, Guai 400 should not be used by children under 12 years of age.

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

You should stop using Guai 400 and ask a doctor if your cough lasts for more than 7 days, recurs, or is accompanied by fever, rash, or persistent headache.

Are there any warnings for using Guai 400?

Yes, ask a doctor before use if you have a persistent or chronic cough, or if your cough is accompanied by excessive phlegm (mucus).

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.

Is it safe to use Guai 400 during pregnancy or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using Guai 400.

How should Guai 400 be stored?

Store Guai 400 at 25°C (77°F) with excursions between 15°-30°C (59°-86°F) in a dry place, away from heat.

Packaging Info

Below are the non-prescription pack sizes of Mucus Relief (guaifenesin 400 mg). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

Guai 400 is a pharmaceutical formulation containing guaifenesin as its active ingredient. It is presented in a dosage form suitable for oral administration. The product is characterized by its specific molecular weight and chemical formula, which are essential for its pharmacological activity. The formulation is designed to facilitate the relief of symptoms associated with respiratory conditions. The appearance of Guai 400 is consistent with standard pharmaceutical practices, ensuring quality and efficacy in its intended use.

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 bothersome mucus from the bronchial passageway. Additionally, this medication aids in making coughs more productive.

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

Dosage and Administration

Adults and children 12 years of age and over are instructed to take 1 tablet every 4 hours as needed while symptoms persist. It is essential to administer the tablet with a full glass of water. The maximum allowable dosage is 6 tablets within a 24-hour period.

For children under 12 years of age, the use of this medication is not recommended.

Contraindications

Use of this product is contraindicated in patients who exceed the recommended dosage or utilize it for more than 7 days. Adhering to these guidelines is essential to prevent potential adverse effects associated with prolonged use or excessive intake.

Warnings and Precautions

Patients should consult a healthcare professional prior to use if they have a persistent or chronic cough, particularly if it is associated with smoking, asthma, chronic bronchitis, or emphysema. Additionally, individuals experiencing a cough accompanied by excessive phlegm (mucus) should seek medical advice before initiating treatment.

It is imperative to adhere to the recommended dosage and not to exceed the specified duration of use, which should not exceed 7 days. Prolonged use may lead to adverse effects and is not advised.

Patients must discontinue use and consult a healthcare provider if the cough persists for more than 7 days, recurs, or is accompanied by additional symptoms such as fever, rash, or a persistent headache. These symptoms may indicate a more serious underlying condition that requires medical evaluation.

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. Prompt action is crucial in managing potential overdose situations effectively.

Side Effects

Patients should be aware of several important warnings and precautions associated with the use of this product. It is advised that individuals consult a healthcare professional prior to use if they have a persistent or chronic cough, such as that which occurs with smoking, asthma, chronic bronchitis, or emphysema. Additionally, those experiencing a cough accompanied by excessive phlegm (mucus) should seek medical advice before using this product.

While using this product, it is crucial not to exceed the recommended dosage and to refrain from using it for more than 7 days. Patients are instructed to stop use and consult a doctor if their cough lasts for more than 7 days, recurs, or is accompanied by fever, rash, or persistent headache, as these symptoms may indicate a serious underlying condition.

For pregnant or breastfeeding individuals, it is recommended to seek guidance from a healthcare professional before use. Furthermore, this product should be kept out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center (1-800-222-1222) should be contacted.

Drug Interactions

There are no specific drug interactions identified for the product, nor are there any noted interactions with laboratory tests. As such, no dosage adjustments or monitoring recommendations are necessary based on the available data.

Packaging & NDC

Below are the non-prescription pack sizes of Mucus Relief (guaifenesin 400 mg). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Mucus Relief.
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 4 hours as needed, taken with a full glass of water, while symptoms persist. The maximum allowable dosage is 6 tablets within a 24-hour period. It is important to keep this medication out of reach of children to prevent accidental ingestion.

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. 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. 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 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

Patients with renal impairment have not been specifically addressed in the available prescribing information. There are no dosage adjustments, special monitoring requirements, or safety considerations outlined for individuals with reduced kidney function. Healthcare professionals should exercise caution and consider the lack of data when prescribing to this patient population.

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 event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center at 1-800-222-1222. Prompt action is crucial to ensure the safety and well-being of the patient.

Healthcare professionals should be aware that symptoms of overdose may vary depending on the substance involved. Therefore, a thorough assessment of the patient's condition is essential.

Management of an overdose typically involves supportive care and symptomatic treatment. It is recommended that healthcare providers monitor the patient closely for any adverse effects and initiate appropriate interventions based on the clinical presentation.

In all cases of suspected overdose, timely communication with poison control and adherence to established treatment protocols are vital for optimal patient outcomes.

Nonclinical Toxicology

No teratogenic or non-teratogenic effects have been reported in the available nonclinical studies. Additionally, there is no information regarding animal pharmacology and toxicology. The absence of data limits the understanding of potential risks associated with the compound in nonclinical settings.

Postmarketing Experience

No postmarketing experience details are available in the insert text.

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 for patients to understand the significance of monitoring their symptoms closely. They should be instructed to stop using the product and consult a healthcare provider if their cough persists for more than 7 days, recurs, or is accompanied by symptoms such as fever, rash, or a persistent headache, as these may indicate a serious underlying condition.

Healthcare providers should emphasize the importance of adhering to the recommended dosage and not exceeding it while using this product. Additionally, patients should be informed that the product should not be used for more than 7 days to avoid potential complications.

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It should be stored at a controlled room temperature of 25°C (77°F), with permissible excursions between 15°C and 30°C (59°F to 86°F).

It is essential to keep the product in a dry place, ensuring that it is not exposed to heat to maintain its integrity and efficacy. Proper storage conditions are crucial for preserving the quality of the product throughout its shelf life.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

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