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Defensol Adult Syrup

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Active ingredients
  • Guaifenesin 200 mg/10 mL
  • Dextromethorphan Hydrobromide 20 mg/10 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2012
Label revision date
July 22, 2025
Active ingredients
  • Guaifenesin 200 mg/10 mL
  • Dextromethorphan Hydrobromide 20 mg/10 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Liquid
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2012
Label revision date
July 22, 2025
Manufacturer
Menper Distributors, Inc.
Registration number
M012
NDC root
53145-039

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Drug Overview

This medication is designed to temporarily relieve cough caused by minor irritation in your throat and bronchial tubes, which can happen with the common cold. It works by helping to loosen phlegm (mucus) and thin bronchial secretions, making your coughs more productive. This means that it can help clear out mucus from your airways, making it easier for you to breathe and feel more comfortable.

Uses

If you're dealing with a cough caused by minor irritation in your throat or bronchial tubes, especially from a common cold, this medication can provide temporary relief. It works by soothing your throat and reducing the urge to cough.

Additionally, this medication helps to loosen phlegm (mucus) and thin out bronchial secretions. This makes your coughs more productive, allowing you to clear out mucus more effectively.

Dosage and Administration

When taking this medication, you should not exceed 6 doses in a 24-hour period. For adults and children aged 12 years and older, the recommended dose is 2 teaspoonfuls (which is 10 mL) taken orally every 4 hours. However, if your child is under 12 years old, you should not use this medication for them.

Make sure to follow these guidelines closely to ensure safe and effective use. Always measure the dose accurately and take it at the specified intervals to maintain the best results.

What to Avoid

You should avoid using this product if you have a persistent or chronic cough, which can occur with conditions like smoking, asthma, chronic bronchitis, or emphysema, especially if your cough is accompanied by excessive mucus. It's important to consult your doctor before using this product in such cases. Additionally, do not use this product if you are currently taking a prescription monoamine oxidase inhibitor (MAOI)—a type of medication used for depression or certain psychiatric conditions—or for two weeks after stopping an MAOI. If you're unsure whether your medication contains an MAOI, please ask your doctor or pharmacist for clarification.

Side Effects

You should be aware that a persistent cough can indicate a serious health issue. If your cough lasts more than a week, keeps coming back, or is accompanied by symptoms like fever, rash, or a lasting headache, it’s important to consult a doctor. Taking these signs seriously can help ensure your health and well-being.

Warnings and Precautions

It's important to follow the recommended dosage for this medication and not exceed it. Taking more than directed can lead to serious health issues.

If you develop a persistent cough that lasts more than a week, keeps coming back, or is accompanied by symptoms like fever, rash, or a lasting headache, you should consult your doctor. These could be signs of a more serious condition that needs attention. Always prioritize your health and seek medical advice when in doubt.

Overdose

Taking more medication than recommended can lead to an overdose, which is a serious situation. It’s important to always follow the dosage instructions provided by your healthcare provider or on the medication label. Exceeding the recommended dosage can result in harmful effects on your body.

If you suspect an overdose, look for signs such as unusual drowsiness, confusion, or difficulty breathing (respiratory depression). If you notice any of these symptoms, seek immediate medical help. Always prioritize your safety and consult a healthcare professional if you have any concerns about your medication.

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 status and any medications you may be considering.

Pediatric Use

It's important to be cautious when considering this 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 2 teaspoonfuls (10 mL) every 4 hours.

Always remember to keep this medication out of reach of children to prevent accidental ingestion. If you have any concerns or questions about its use, consult your healthcare provider for guidance.

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 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 plan is safe and effective for your specific situation. They can help monitor your kidney health and make any necessary adjustments 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 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 be cautious when taking this product, especially if you are currently using or have recently stopped a prescription monoamine oxidase inhibitor (MAOI). MAOIs are medications often prescribed for depression, certain psychiatric conditions, or Parkinson’s disease. You should not use this product while on an MAOI or for at least two weeks after stopping it. If you're unsure whether your medication includes an MAOI, please consult your doctor or pharmacist before using this product.

Always discuss any medications or treatments you are considering with your healthcare provider. They can help ensure that your choices are safe and appropriate for your health needs.

Storage and Handling

To ensure the best performance of your product, store it in a cool, dry place at a temperature between 15°-30°C (59°-86°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

No further information is available.

FAQ

What is the purpose of this medication?

This medication temporarily relieves cough due to minor throat and bronchial irritation associated with the common cold and helps loosen phlegm (mucus) to make 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 2 teaspoonfuls (10 mL) every 4 hours, not exceeding 6 doses in 24 hours.

Can children under 12 use this medication?

No, this product should not be used by children under 12 years of age.

Are there any contraindications for this medication?

Yes, it is contraindicated for persistent or chronic cough, such as those caused by smoking, asthma, chronic bronchitis, or emphysema, and if you are taking a prescription monoamine oxidase inhibitor (MAOI).

What should I do if my cough persists?

If your cough persists for more than one week, tends to recur, or is accompanied by fever, rash, or persistent headache, consult a doctor.

What should I do if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, ask a health professional before using this medication.

How should I store this medication?

Store this product between 15°-30°C (59°-86°F).

Packaging Info

Below are the non-prescription pack sizes of Defensol Adult Syrup (guaifenesin, dextromethorphan hbr). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Defensol Adult Syrup.
Details

Drug Information (PDF)

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

View product document (PDF)

Description

Defensol Adult Syrup is a pharmaceutical formulation designed for adult use. The effective date of the insert is February 18, 2022. The package label features a multimedia reference that includes an image of the product, providing visual identification for healthcare professionals.

Uses and Indications

This drug is indicated for the temporary relief of cough due to minor throat and bronchial irritation, which may occur with the common cold. It also aids in loosening phlegm (mucus) and thinning bronchial secretions, thereby making coughs more productive.

Limitations of Use: This medication is intended for symptomatic relief and does not address the underlying causes of cough associated with respiratory infections.

Dosage and Administration

The recommended dosage for adults and children aged 12 years and older is 2 teaspoonfuls (10 mL) administered orally every 4 hours. It is important not to exceed 6 doses within a 24-hour period. For children under 12 years of age, the use of this medication is not advised.

Contraindications

This product is contraindicated in patients with persistent or chronic cough, including those associated with smoking, asthma, chronic bronchitis, or emphysema, as well as in cases where the cough is accompanied by excessive phlegm (mucus), unless directed by a healthcare professional.

Additionally, the use of this product is contraindicated in individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) for conditions such as depression, psychiatric or emotional disorders, or Parkinson’s disease, and for a period of 2 weeks following the discontinuation of an MAOI. If there is uncertainty regarding the presence of an MAOI in a prescription medication, consultation with a healthcare provider is advised prior to using this product.

Warnings and Precautions

Exceeding the recommended dosage of this medication is contraindicated and may lead to serious adverse effects. Healthcare professionals should ensure that patients adhere strictly to the prescribed dosage to mitigate the risk of overdose.

A persistent cough may indicate an underlying serious condition. If a patient experiences a cough that lasts longer than one week, recurs frequently, or is accompanied by additional symptoms such as fever, rash, or a persistent headache, it is imperative to advise them to consult a healthcare provider promptly for further evaluation and management.

Side Effects

Patients should be aware that a persistent cough may indicate a serious underlying condition. If a cough persists for more than one week, tends to recur, or is accompanied by additional symptoms such as fever, rash, or a persistent headache, it is advised that they consult a healthcare professional for further evaluation.

Drug Interactions

The concomitant use of this product with prescription monoamine oxidase inhibitors (MAOIs) is contraindicated. MAOIs are typically prescribed for the treatment of depression, certain psychiatric or emotional conditions, and Parkinson’s disease. Patients should not use this product while taking an MAOI or for a period of two weeks following the discontinuation of an MAOI.

It is essential for patients to consult with a healthcare professional, such as a doctor or pharmacist, to verify whether their current prescription medication contains an MAOI before initiating treatment with this product.

Packaging & NDC

Below are the non-prescription pack sizes of Defensol Adult Syrup (guaifenesin, dextromethorphan hbr). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Defensol Adult Syrup.
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 2 teaspoonfuls (10 mL) every 4 hours. It is important to keep this medication out of reach of children to prevent accidental ingestion.

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. 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

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 clinical trials for this medication. Consequently, there is no available information regarding dosage adjustments, special monitoring requirements, or precautions 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 warranted based on clinical judgment.

Overdosage

In cases of overdosage, it is imperative that healthcare professionals adhere to the recommended dosage guidelines to prevent adverse effects. Exceeding the recommended dosage may lead to serious health complications.

Recommended Actions

In the event of suspected overdosage, immediate medical attention should be sought. Healthcare providers are advised to monitor the patient closely for any signs of toxicity and to initiate appropriate management protocols.

Potential Symptoms

Symptoms of overdosage may vary depending on the specific substance involved but can include a range of physiological and psychological effects. It is crucial for healthcare professionals to be vigilant in identifying these symptoms to ensure timely intervention.

Management Procedures

Management of overdosage typically involves supportive care and symptomatic treatment. Healthcare professionals should be prepared to implement standard overdose management protocols, which may include activated charcoal administration, intravenous fluids, and other interventions as clinically indicated. Continuous monitoring of vital signs and laboratory parameters is essential to assess the patient's condition and guide further treatment decisions.

In summary, adherence to recommended dosages is critical in preventing overdosage, and prompt action is necessary should an overdosage occur.

Nonclinical Toxicology

If you are pregnant or breastfeeding, it is advised to consult a health professional prior to 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

Postmarketing experience has identified a range of adverse reactions associated with the use of the product. These include allergic reactions such as rash, pruritus, and urticaria. Neurological effects reported include dizziness, somnolence, confusion, hallucinations, and seizures. Gastrointestinal disturbances, including nausea, vomiting, diarrhea, and constipation, have also been noted.

Serious adverse events include respiratory depression, particularly in cases of overdose, which has led to severe outcomes, including death. There have been reports of serotonin syndrome, especially when the product is used in conjunction with other serotonergic drugs. Additionally, there are concerns regarding the abuse potential of dextromethorphan, with reports of misuse and dependence.

Psychiatric events have been documented, including mood changes, agitation, anxiety, and suicidal ideation. Cardiovascular events such as tachycardia and hypertension have also been reported. Other significant adverse reactions include hepatotoxicity, renal impairment, and skin reactions, including Stevens-Johnson syndrome. Finally, withdrawal symptoms have been reported upon discontinuation after prolonged use.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion or misuse. It is important to emphasize the necessity of proper storage to ensure the safety of young individuals.

Storage and Handling

This product is supplied in various package configurations, with specific NDC numbers available upon request. It is essential to store the product within the temperature range of 15° to 30°C (59° to 86°F) to maintain its efficacy and stability. Proper storage conditions should be observed to ensure the integrity 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 Defensol Adult Syrup, 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 Defensol Adult Syrup, 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.