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Maxium Strength Dm Max

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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
Liquid
Route
Oral
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2013
Label revision date
December 19, 2025
Drug Information (PDF)
Prescribing information, PDF file
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
Liquid
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 2013
Label revision date
December 19, 2025
Manufacturer
Discount Drug Mart
Registration number
M012
NDC root
53943-518
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

MAXIUM STRENGTH DM MAX is a medication that contains two active ingredients: Dextromethorphan HBr, which acts as a cough suppressant, and Guaifenesin, an expectorant. This product is designed for adults aged 12 and over to help control coughs, thin and loosen mucus, and relieve chest congestion. It works by helping to loosen phlegm (mucus) and thin bronchial secretions, making it easier for you to drain your bronchial tubes and temporarily relieve cough caused by minor throat and bronchial irritation.

Uses

This medication is designed to help you breathe easier by loosening phlegm (mucus) and thinning bronchial secretions, which allows for better drainage of your bronchial tubes. If you're experiencing a cough due to minor irritation in your throat and bronchial area, this medication can provide temporary relief from those symptoms.

It's important to note that there are no reported teratogenic effects (which means it doesn't cause birth defects) associated with this medication, making it a safer option for those concerned about such risks.

Dosage and Administration

It's important to take this medication exactly as recommended. For adults and children aged 12 years and older, the dosage is 20 milliliters (mL) every 4 hours. Make sure to use the dosage cup provided to measure the correct amount.

You should not take more than 6 doses within a 24-hour period. If you are caring for a child under 12 years of age, please do not use this medication for them. Always follow these guidelines to ensure safe and effective use.

What to Avoid

It's important to follow the instructions provided with your medication carefully. You should not use more than the directed amount, as taking more than recommended can lead to unwanted effects.

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

Side Effects

You should be aware of some important warnings and potential side effects when using this medication. First, do not use it if the printed seal under the cap is torn or missing, and it is not recommended for children under 12 years of age. If you are currently taking a prescription monoamine oxidase inhibitor (MAOI)—a type of medication for depression or certain other conditions—or have stopped taking one within the last two weeks, consult your doctor or pharmacist before using this product.

If your cough lasts more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, you should stop using the medication and seek medical advice, as these may indicate a more serious condition. Additionally, consult a doctor before use if you have a chronic cough related to smoking, asthma, chronic bronchitis, or emphysema, or if your cough produces excessive mucus.

Warnings and Precautions

You should not use this product if the printed seal under the cap is torn or missing. It is also not suitable for children under 12 years of age. If you are currently taking a prescription monoamine oxidase inhibitor (MAOI) for depression, psychiatric conditions, or Parkinson's disease, do not use this product, and wait at least two weeks after stopping the MAOI before taking it. If you're unsure whether your medication contains an MAOI, please consult your doctor or pharmacist.

Keep this product out of reach of children. In case of an overdose, seek medical help or contact a Poison Control Center immediately. If your cough lasts more than seven days, returns, or is accompanied by fever, rash, or a persistent headache, stop using the product and call your doctor, as these may indicate a more serious condition.

Overdose

It appears that there is no specific information available regarding overdosage for this medication. However, it's important to be aware of the general signs of an overdose, which can include symptoms like extreme drowsiness, confusion, or difficulty breathing. If you suspect an overdose, it’s crucial to seek immediate medical help.

In case of an emergency, call your local emergency services or go to the nearest hospital. Always keep medications out of reach of children and follow the prescribed dosage to prevent any potential risks. If you have any concerns or questions about your medication, don’t hesitate to reach out to your healthcare provider for guidance.

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 20 mL every 4 hours. Always consult with a healthcare professional if you have any questions or concerns about using 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 before starting the medication. 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 there are no specific guidelines or dosage adjustments mentioned for your condition in the available information. This means that the usual recommendations for monitoring or safety considerations related to renal impairment (kidney issues) are not provided.

It's always best to discuss your individual situation with your healthcare provider, who can offer personalized advice and ensure that any medications you take are safe and effective for you.

Hepatic Impairment

If you have liver problems, it's important to know that there are no specific guidelines or dosage adjustments mentioned for your condition in the available information. This means that the standard recommendations apply, but you should always consult your healthcare provider for personalized advice. They can help determine the best approach for your treatment and monitor your liver function as needed.

Make sure to keep your doctor informed about your liver health, as they may want to conduct regular tests to ensure your safety while using any medication. Your well-being is a priority, and your healthcare team is there to support you.

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. Combining these 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 in a cool, dry place at a temperature between 15-30°C (59-86°F). It's important to avoid refrigeration, as this can affect the product's effectiveness.

When handling the product, make sure to do so in a clean environment to maintain its integrity. Always follow any specific instructions provided with the product for safe use and disposal. Keeping these guidelines in mind will help you use the product safely and effectively.

Additional Information

No further information is available.

FAQ

What is MAXIUM STRENGTH DM MAX?

MAXIUM STRENGTH DM MAX is a medication that contains Dextromethorphan HBr and Guaifenesin, classified as a cough suppressant and expectorant.

Who can use MAXIUM STRENGTH DM MAX?

This product is intended for adults and children aged 12 and over. It should not be used by children under 12 years of age.

What symptoms does MAXIUM STRENGTH DM MAX relieve?

It helps control cough, thins and loosens mucus, and relieves chest congestion due to minor throat and bronchial irritation.

What is the recommended dosage for adults and children 12 years and older?

The recommended dosage is 20 mL every 4 hours, not to exceed 6 doses in any 24-hour period.

Are there any warnings associated with MAXIUM STRENGTH DM MAX?

Yes, do not use if the printed seal under the cap is torn or missing, and do not use if you are taking a prescription monoamine oxidase inhibitor (MAOI) or for 2 weeks after stopping an MAOI.

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

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

How should I store MAXIUM STRENGTH DM MAX?

Store the product between 15-30°C (59-86°F) and do not refrigerate.

Can I use MAXIUM STRENGTH DM MAX if I am pregnant or breastfeeding?

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

What should I do in case of an overdose?

In case of overdose, get medical help or contact a Poison Control Center right away.

Packaging Info

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

Packaging configurations for Maxium Strength Dm Max.
Details

Drug Information (PDF)

This file contains official product information for Maxium Strength Dm Max, 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.

Uses and Indications

This drug is indicated for the relief of cough associated with minor throat and bronchial irritation due to colds. It helps to loosen phlegm (mucus) and thin bronchial secretions, facilitating drainage of the bronchial tubes.

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

Dosage and Administration

The medication should be taken only as recommended. It is essential to utilize a dosage cup for accurate measurement. For adults and children aged 12 years and older, the recommended dosage is 20 mL every 4 hours, with a maximum limit of 6 doses within a 24-hour period.

Children under 12 years of age should not use this medication.

Contraindications

There are no specified contraindications for the use of this product. However, it is essential to adhere to the recommended dosage guidelines. Use of the product in excess of the directed amount is not advised.

Warnings and Precautions

The product must not be used if the printed seal under the cap is torn or missing, as this indicates potential tampering. It is contraindicated for children under 12 years of age. Additionally, the product should not be administered to individuals currently taking a prescription monoamine oxidase inhibitor (MAOI) or within two weeks of discontinuing such medication. MAOIs are commonly prescribed for depression, psychiatric or emotional conditions, or Parkinson's disease. If there is uncertainty regarding the presence of an MAOI in a prescription, consultation with a healthcare professional is advised prior to use.

General precautions include ensuring that the product is kept out of reach of children. In the event of an overdose, immediate medical assistance should be sought, or contact with a Poison Control Center is recommended.

Healthcare professionals should advise patients to discontinue use and consult a physician if a cough persists for more than seven days, recurs, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

In cases of overdose, it is imperative to seek emergency medical help or contact a Poison Control Center without delay. No specific laboratory tests are required for monitoring the safe use of this product.

Side Effects

Patients should be aware of several important warnings associated with the use of this product. It is contraindicated for individuals if the printed seal under the cap is torn or missing. Additionally, this product should not be used in children under 12 years of age. Patients currently taking a prescription monoamine oxidase inhibitor (MAOI) for depression, psychiatric or emotional conditions, or Parkinson's disease, or those who have stopped taking an MAOI within the last two weeks, should also avoid this product. If patients are uncertain whether their prescription medication contains an MAOI, they are advised to consult a doctor or pharmacist prior to use.

Patients are instructed to stop using the product and seek medical advice if their cough persists for more than 7 days, returns, or is accompanied by fever, rash, or a persistent headache, as these symptoms may indicate a serious underlying condition.

Before using this product, patients should consult a doctor if they have a cough that is chronic, such as that associated with smoking, asthma, chronic bronchitis, or emphysema, or if their cough is accompanied by excessive phlegm (mucus).

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 Maxium Strength Dm Max (dextromethorphan hydrobromide, guaifenesin). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Maxium Strength Dm Max.
Details

Pediatric Use

Pediatric patients under 12 years of age should not be administered this medication. For patients aged 12 years and older, the recommended dosage is 20 mL every 4 hours. Caution is advised when considering treatment options for pediatric populations, particularly those under the specified age limit.

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 potential adverse effects or changes in efficacy, given the lack of targeted data for this population.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional before using this medication. The potential risks and benefits must be carefully considered, 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 safe use during pregnancy and breastfeeding.

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 no specific information regarding dosage adjustments, special monitoring, or safety considerations provided in the text. Therefore, healthcare professionals should exercise caution and consider individual patient factors when prescribing to this population. Regular assessment of renal function may be warranted to ensure safe and effective use of the medication in patients with reduced kidney function.

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 absence of specific overdosage information, it is essential for healthcare professionals to remain vigilant regarding the potential for overdose with this medication. In cases where an overdose is suspected, immediate medical attention should be sought.

Healthcare providers are advised to monitor patients closely for any signs or symptoms that may arise from an overdose. Common symptoms may include, but are not limited to, severe drowsiness, confusion, respiratory distress, or any other unusual clinical manifestations.

Management of an overdose should be tailored to the individual patient and may involve supportive care, including monitoring vital signs and providing symptomatic treatment as necessary. In cases of significant overdose, consultation with a poison control center or a medical toxicologist is recommended to determine the most appropriate course of action.

It is crucial for healthcare professionals to educate patients about the importance of adhering to prescribed dosages and to provide guidance on what to do in the event of a suspected overdose.

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 in these areas limits the understanding of the compound's safety profile in nonclinical settings.

Postmarketing Experience

Postmarketing experience has identified the following adverse reactions reported voluntarily or through surveillance programs: nausea, vomiting, dizziness, and allergic reactions, which include rash, pruritus, and urticaria.

Patient Counseling

Healthcare providers should advise patients to keep this product 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 should be informed 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 persistent headache, as these symptoms may indicate a serious condition. It is important to emphasize that patients should not exceed the recommended dosage when using this product.

Additionally, healthcare providers should encourage patients to consult a doctor prior to use if they have a cough that is chronic or lasts for an extended period, particularly in cases 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 temperature range of 15-30°C (59-86°F). Refrigeration is not permitted, as it may compromise the integrity of the product. Proper handling and adherence to these storage conditions are crucial to ensure the product's efficacy and safety.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Maxium Strength Dm Max, 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 Maxium Strength Dm Max, 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.