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Delsym

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Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2013
Label revision date
February 23, 2026
Active ingredients
  • Guaifenesin 400 mg/20 mL
  • Dextromethorphan Hydrobromide 20 mg/20 mL
Other brand names
Drug classes
Expectorant, Sigma-1 Agonist, Uncompetitive N-methyl-D-aspartate Receptor Antagonist
Dosage form
Solution
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2013
Label revision date
February 23, 2026
Manufacturer
RB Health (US) LLC
Registration number
M012
NDC root
63824-213

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Drug Overview

Delsym® is a cherry-flavored liquid medication designed for individuals aged 12 and older to help relieve cough and chest congestion. It contains two active ingredients: dextromethorphan HBr, which acts as a cough suppressant, and guaifenesin, an expectorant that helps loosen phlegm (mucus) and thin bronchial secretions.

This combination works by temporarily relieving cough caused by minor throat and bronchial irritation, which can occur with the common cold or from inhaled irritants. Delsym® helps control the impulse to cough, making it easier for you to get to sleep, while also making coughs more productive by clearing mucus from the bronchial passageways.

Uses

This medication is designed to help you breathe easier by loosening phlegm (mucus) and thinning bronchial secretions. This action helps clear out bothersome mucus from your airways, making your coughs more productive.

You can also use this medication to temporarily relieve coughing caused by minor throat and bronchial irritation, which can happen with the common cold or from inhaling irritants. It helps reduce the intensity of your cough and can even lessen the urge to cough, making it easier for you to get a good night's sleep.

Dosage and Administration

When using this medication, it's important to follow the dosing instructions carefully to ensure your safety and effectiveness. You should not take more than 6 doses within a 24-hour period. Always measure your dose using the dosing cup that comes with the medication, as this ensures you get the correct amount. Avoid using this dosing cup for any other products to prevent confusion.

For adults and children aged 12 years and older, the recommended dose is 20 mL taken every 4 hours. If you are caring for a child under 12 years of age, do not use this medication for them. If you have any questions or need further guidance, consult your doctor.

What to Avoid

You should avoid using this product if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which are medications often prescribed for depression, psychiatric conditions, or Parkinson's disease. Additionally, do not use this product for at least two weeks after stopping an MAOI. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist before using this product.

It's also important to follow the dosage instructions carefully. Do not exceed the recommended amount when using this product, as misuse can lead to serious health issues. Always prioritize your safety and well-being by adhering to these guidelines.

Side Effects

You should avoid using this medication if you are currently taking a monoamine oxidase inhibitor (MAOI), which is a type of drug used for depression or certain other conditions, or if you have stopped taking an MAOI within the last two weeks. If you're unsure whether your prescription includes an MAOI, please consult your doctor or pharmacist.

It's important to talk to your doctor before using this product if you have a persistent cough due to smoking, asthma, chronic bronchitis, or emphysema, or if your cough is accompanied by excessive mucus. You should stop using the medication and seek medical advice if your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a lasting headache, as these may indicate a more serious issue. If you are pregnant or breastfeeding, consult a healthcare professional before use. Always keep this medication out of reach of children, and in case of overdose, seek immediate medical help or contact a Poison Control Center.

Warnings and Precautions

You should not use this product if you are currently taking a prescription monoamine oxidase inhibitor (MAOI), which is a type of medication used for depression or certain other conditions. Additionally, you should wait at least two weeks after stopping an MAOI before using this product. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist.

It's important to stop using this product and contact your doctor if your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, as these may indicate a more serious issue. In the event of an overdose, seek medical help or contact a Poison Control Center immediately. If you are pregnant or breastfeeding, please consult a healthcare professional before using this product. Lastly, keep this medication out of reach of children to ensure their safety.

Overdose

If you suspect an overdose, it’s crucial to seek medical help immediately or contact a Poison Control Center. Signs of an overdose can vary, but they may include unusual symptoms that are more severe than typical side effects.

Don’t wait for symptoms to worsen; acting quickly can make a significant difference in your safety. Always prioritize your health and reach out for assistance if you think you or someone else may have taken too much of a 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 journey.

Pediatric Use

If you are considering this medication for your child, it's important to know that it should not be used in children under 12 years of age. For those aged 12 and older, the recommended dose is 20 mL, taken every 4 hours as needed. However, make sure not to exceed 6 doses within a 24-hour period to ensure safety.

When measuring the dose, always use the dosing cup that comes with the medication. Avoid using this cup for any other products to prevent dosing errors. Keeping these guidelines in mind will help you use the medication safely and effectively for your older 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 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 is safe and effective for your specific condition. They can help you understand any necessary precautions or adjustments based on your kidney health.

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 (issues with liver function).

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 be cautious when taking certain medications. If you are currently using a prescription monoamine oxidase inhibitor (MAOI), or if you have stopped taking one within the last two weeks, you should avoid using this medication. Taking these together can lead to serious interactions that may affect your health.

Always discuss any medications you are taking with your healthcare provider, including any recent changes. This ensures that you receive safe and effective treatment tailored to your needs.

Storage and Handling

To ensure the best performance of your product, store it at room temperature between 20-25°C (68-77°F). It's important to keep it away from refrigeration, as cooling can affect its effectiveness.

When handling the product, make sure to maintain a clean environment to avoid contamination. Always follow any specific instructions provided for safe use and disposal to ensure your safety and the product's integrity.

Additional Information

You should take this medication orally, using the dosing cup provided. For adults and children aged 12 and over, the recommended dose is 20 mL every 4 hours, but do not exceed 6 doses in a 24-hour period.

If you are pregnant or breastfeeding, consult a healthcare professional before using this medication. Always keep it out of reach of children. In case of an overdose, seek medical help or contact a Poison Control Center immediately.

FAQ

What is Delsym® used for?

Delsym® is used to temporarily relieve cough due to minor throat and bronchial irritation, as well as to relieve chest congestion.

What are the active ingredients in Delsym®?

Delsym® contains Dextromethorphan HBr, a cough suppressant, and Guaifenesin, an expectorant.

Who can use Delsym®?

Delsym® is intended for adults and children aged 12 years and older.

How should I take Delsym®?

You should take 20 mL every 4 hours using the dosing cup provided, and do not exceed 6 doses in a 24-hour period.

Are there any contraindications for using Delsym®?

Do not use Delsym® if you are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one within the last 2 weeks.

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 headache, you should stop use and consult a doctor.

Can I use Delsym® if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using Delsym®.

What should I do in case of an overdose?

In case of overdose, seek medical help or contact a Poison Control Center immediately.

How should Delsym® be stored?

Store Delsym® at 20-25°C (68-77°F) and do not refrigerate.

Packaging Info

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

Packaging configurations for Delsym.
Details

Drug Information (PDF)

This file contains official product information for Delsym, 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 relief of cough associated with minor throat and bronchial irritation, which may occur due to the common cold or inhaled irritants. It helps to loosen phlegm (mucus) and thin bronchial secretions, facilitating the clearance of mucus from the bronchial passageways and making coughs more productive.

Additionally, this drug temporarily relieves the intensity of coughing and the impulse to cough, which may assist patients in achieving restful sleep.

There are no teratogenic or nonteratogenic effects mentioned in the available data.

Dosage and Administration

Healthcare professionals should advise patients to adhere strictly to the following dosage and administration guidelines.

For adults and children aged 12 years and older, the recommended dose is 20 mL, to be measured using the dosing cup provided, every 4 hours as needed. It is imperative that patients do not exceed 6 doses within a 24-hour period.

For children under 12 years of age, the product is not recommended and should not be used.

Patients should be instructed to use only the dosing cup included with the product for measurement and to refrain from using this cup with any other products to ensure accurate dosing.

Contraindications

Use of this product is contraindicated in patients currently taking a prescription monoamine oxidase inhibitor (MAOI), which includes certain medications for depression, psychiatric or emotional conditions, or Parkinson's disease. Additionally, use is contraindicated for a period of 2 weeks following the discontinuation of an MAOI. Patients should consult a healthcare professional if they are uncertain whether their prescription medication contains an MAOI.

Exceeding the recommended dosage while using this product is also contraindicated.

Warnings and Precautions

Use of this product is contraindicated in individuals currently taking prescription monoamine oxidase inhibitors (MAOIs), which are commonly prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. Additionally, it is advised to refrain from using this product for a minimum of two weeks following the discontinuation of an MAOI. Healthcare professionals should be consulted if there is uncertainty regarding the presence of an MAOI in a prescribed medication.

Patients should be instructed to discontinue use and seek medical advice if a cough persists for more than seven days, recurs, or is accompanied by fever, rash, or a headache that lasts. These symptoms may indicate a serious underlying condition that requires further evaluation.

In the event of an overdose, immediate medical assistance should be sought, or the individual should contact a Poison Control Center without delay.

For individuals who are pregnant or breastfeeding, it is essential to consult a healthcare professional prior to using this product to ensure safety for both the mother and child.

This product should be stored out of reach of children to prevent accidental ingestion or misuse.

Side Effects

Patients should be aware of the potential adverse reactions associated with this product. Serious adverse reactions may occur, particularly in individuals who are currently taking or have recently discontinued a prescription monoamine oxidase inhibitor (MAOI). The use of this product is contraindicated in such cases, and patients are advised to consult a healthcare professional if they are uncertain about their medication.

Common adverse reactions may include persistent or chronic cough, especially in patients with underlying conditions such as smoking, asthma, chronic bronchitis, or emphysema. Patients experiencing a cough that is accompanied by excessive phlegm should also seek medical advice prior to use.

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

For pregnant or breastfeeding individuals, it is recommended to seek guidance from a healthcare professional before using this product. Additionally, this product should be kept out of reach of children, and in the event of an overdose, immediate medical assistance or contact with a Poison Control Center is essential.

Drug Interactions

The concomitant use of this medication with prescription monoamine oxidase inhibitors (MAOIs) is contraindicated. Patients should not take this medication while on an MAOI or for a period of two weeks following the discontinuation of an MAOI. The combination may result in serious interactions that could pose significant health risks.

No additional drug interactions or laboratory test interactions have been identified for this medication. Therefore, no further dosage adjustments or monitoring recommendations are necessary beyond the contraindication with MAOIs.

Packaging & NDC

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

Packaging configurations for Delsym.
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 20 mL, administered using the dosing cup provided, every 4 hours as needed. It is important to note that no more than 6 doses should be taken within a 24-hour period. The dosing cup included with the product must be used exclusively for this medication and should not be utilized with other products to ensure accurate measurement.

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. The potential risks and benefits must be carefully weighed, as the effects on fetal outcomes and lactation are not fully established. It is essential for women of childbearing potential to seek medical advice to ensure the safety of both the mother and the developing 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 medication 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 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 this medication. Consequently, there are no 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. Prompt intervention is crucial to mitigate potential adverse effects associated with the overdose.

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

Management of an overdose typically involves supportive care and symptomatic treatment. This may include monitoring vital signs, providing respiratory support, and administering activated charcoal if indicated and within the appropriate time frame. In cases where specific antidotes are available, their use should be considered based on the clinical scenario.

It is essential for healthcare providers to remain vigilant and prepared to implement these measures swiftly to ensure optimal patient outcomes in cases of overdose.

Nonclinical Toxicology

If 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

No postmarketing experience details are available in the insert text.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion. In the event of an overdose, patients should be instructed to seek medical help or contact a Poison Control Center immediately.

Patients must be informed not to use this product if they are currently taking a prescription monoamine oxidase inhibitor (MAOI) or have taken one within the last two weeks. It is important for patients to consult with their doctor or pharmacist if they are unsure whether their prescription medication contains an MAOI.

Healthcare providers should counsel patients to discontinue use and consult a doctor if their cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a headache that lasts. These symptoms may indicate a serious condition that requires medical attention.

Patients should be reminded to adhere strictly to the recommended dosage and not exceed the directed amount while using this product. Additionally, healthcare providers should encourage patients to seek medical advice before using this medication if they have a persistent or chronic cough associated with smoking, asthma, chronic bronchitis, or emphysema. It is also advisable for patients to consult a doctor 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 20-25°C (68-77°F). Refrigeration is not permitted, as exposure to lower temperatures may compromise the integrity of the product. Proper handling and storage conditions must be adhered to in order to maintain product efficacy and safety.

Additional Clinical Information

The medication is administered orally, with a recommended dosage of 20 mL every 4 hours for adults and children aged 12 years and older. Patients should not exceed 6 doses within a 24-hour period.

Clinicians should counsel patients to consult a health professional if they are pregnant or breastfeeding. It is important to keep the medication out of reach of children, and in the event of an overdose, patients should seek medical assistance or contact a Poison Control Center immediately.

Drug Information (PDF)

This file contains official product information for Delsym, 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 Delsym, 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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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.