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Marc Glassman

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Active ingredient
Calcium Carbonate 1000 mg
Other brand names
Dosage form
Tablet, Chewable
Route
Oral
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2019
Label revision date
September 19, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Calcium Carbonate 1000 mg
Other brand names
Dosage form
Tablet, Chewable
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 2019
Label revision date
September 19, 2025
Manufacturer
MARC GLASSMAN, INC
Registration number
M001
NDC root
68998-103
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

Marcs® is an ultra-strength antacid tablet designed to provide fast relief from common digestive discomforts. Each tablet contains 1000 mg of calcium carbonate, which helps alleviate symptoms such as heartburn, acid indigestion, sour stomach, and upset stomach associated with these issues.

These chewable tablets come in an assorted fruit flavor and are gluten-free, making them a convenient option for those seeking quick relief from digestive troubles. With a total of 72 tablets in each package, Marcs® is a practical choice for managing occasional stomach discomfort.

Uses

If you're experiencing discomfort from heartburn, acid indigestion, or a sour stomach, this medication can help relieve those symptoms. It’s also effective for soothing an upset stomach that comes along with these issues.

You can feel confident using this medication, as there are no known teratogenic effects (which means it doesn't cause birth defects) associated with it. Enjoy relief from your stomach discomfort and get back to feeling your best.

Dosage and Administration

When you need relief from certain symptoms, adults and children aged 12 and older can chew 2 to 3 tablets completely as the symptoms occur. It's important not to swallow the tablets whole, as they need to be chewed to work effectively.

If your symptoms last longer than 2 weeks, you should consult a doctor before continuing to take the medication. Always follow your doctor's advice for the best results.

What to Avoid

There are no specific contraindications, controlled substance classifications, or concerns regarding abuse, misuse, or dependence associated with this medication. This means that, based on the available information, there are no particular situations or conditions under which you should avoid using it. Always consult with your healthcare provider for personalized advice and to ensure that this medication is appropriate for your individual health needs.

Side Effects

You may experience some side effects when using this product. It's important to be aware that taking more than 7 tablets in a 24-hour period can lead to adverse reactions. If you are pregnant, you should limit your intake to no more than 5 tablets in 24 hours. Additionally, using the maximum dosage for more than 2 weeks should only be done under the guidance of a doctor.

Before using this product, consult with your doctor or pharmacist, especially if you are currently taking any prescription medications, as antacids can interact with certain drugs.

Warnings and Precautions

Before using this product, it's important to consult with your doctor or pharmacist, especially if you are currently taking any prescription medications, as antacids can interact with them. Be mindful of the dosage: do not exceed 7 tablets in a 24-hour period, and if you are pregnant, limit your intake to no more than 5 tablets in 24 hours. Additionally, avoid using the maximum dosage for more than 2 weeks unless directed by your doctor.

While there are no specific laboratory tests required for safe use, always listen to your body. If you experience any unusual symptoms or have concerns, it's best to reach out to your healthcare provider for guidance.

Overdose

If you suspect an overdose, it's important to act quickly. Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing. If you notice any of these symptoms, seek immediate medical help.

In the event of an overdose, contact your local emergency services or go to the nearest hospital. It's crucial to provide them with as much information as possible about the substance taken and the amount, if known. Remember, your safety is the top priority, so don’t hesitate to get help.

Pregnancy Use

If you are pregnant, it is important to be cautious with medication. You should not take more than 5 tablets in a 24-hour period. Always consult with your healthcare provider before taking any medication to ensure it is safe for you and your baby. Your health and the health of your child are the top priority, so make sure to discuss any concerns or questions you may have.

Lactation Use

If you are breastfeeding, you can feel reassured that there are no specific warnings or recommendations regarding the use of this product while nursing. Additionally, there is no information available about whether this product is excreted in breast milk or any potential risks to your infant. Always consult with your healthcare provider if you have any concerns or questions about medications while breastfeeding.

Pediatric Use

When it comes to using this medication for children, it's important to note that it is intended for adults and children aged 12 years and older. If your child is within this age range, they should chew 2 to 3 tablets completely when symptoms arise, or follow your doctor's instructions.

Always remember to keep this medication out of reach of younger children to ensure their safety. If you have any concerns or questions about its use, don't hesitate to consult your healthcare provider.

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 consult with your healthcare provider about your individual situation, as they 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 need to conduct regular tests to ensure your safety while using any medication. Your well-being is a priority, so don't hesitate to ask questions or express any concerns you may have.

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications or tests you may be taking. While there are no specific drug interactions or laboratory test interactions noted for this medication, your healthcare provider can help ensure that everything you are taking works well together and is safe for you.

Always feel free to ask questions and share your complete list of medications and any tests you are undergoing. This way, you can avoid any potential issues and receive the best care possible.

Storage and Handling

To ensure the best performance and safety of your product, store it at room temperature and keep the container tightly closed when not in use. This helps maintain its effectiveness and prevents contamination.

Before using, always check the safety seal under the cap. If the seal is torn or missing, do not use the product, as this indicates it may not be safe. Following these simple guidelines will help you use the product safely and effectively.

Additional Information

You will take this medication orally. There are no additional details available regarding laboratory tests, abuse potential, patient counseling, or postmarketing experiences. If you have any questions or concerns about your treatment, be sure to discuss them with your healthcare provider.

FAQ

What is Marcs®?

Marcs® is an ultra strength antacid tablet that contains 1000 mg of calcium carbonate.

What symptoms does Marcs® relieve?

Marcs® relieves heartburn, acid indigestion, sour stomach, and upset stomach associated with these symptoms.

How should I take Marcs®?

Adults and children 12 years of age and over should chew 2-3 tablets completely as symptoms occur, or as directed by a doctor. Do not swallow tablets whole.

Are there any warnings for using Marcs®?

Yes, do not take more than 7 tablets in 24 hours, and if pregnant, do not take more than 5 tablets in 24 hours. Consult a doctor if symptoms persist for more than 2 weeks.

Is Marcs® gluten-free?

Yes, Marcs® is gluten-free.

What should I do if I am taking other prescription drugs?

Ask a doctor or pharmacist before use, as antacids may interact with certain prescription drugs.

How should I store Marcs®?

Store Marcs® at room temperature and keep the container tightly closed. Do not use if the printed seal under the cap is torn or missing.

Is there any information about Marcs® use during pregnancy?

There are no teratogenic effects mentioned, but pregnant women should not take more than 5 tablets in 24 hours.

What flavors does Marcs® come in?

Marcs® is available in an assorted fruit flavor, which is naturally and artificially flavored.

Packaging Info

Below are the non-prescription pack sizes of Marc Glassman (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Marc Glassman.
Details

Drug Information (PDF)

This file contains official product information for Marc Glassman, 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 drug.

Uses and Indications

This drug is indicated for the relief of heartburn, acid indigestion, sour stomach, and upset stomach associated with these symptoms.

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

Dosage and Administration

Adults and children aged 12 years and older are instructed to chew 2 to 3 tablets completely as symptoms occur, or as directed by a healthcare professional. It is important to note that the tablets should not be swallowed whole.

Patients should refrain from using this medication for symptoms that persist for more than 2 weeks unless advised by a healthcare provider.

Contraindications

There are no contraindications associated with the use of this product. It is deemed safe for use in the absence of specific conditions or situations that would warrant avoidance.

Warnings and Precautions

Healthcare professionals should advise patients to consult a doctor or pharmacist prior to using this product if they are currently taking any prescription medications, as antacids may interact with certain drugs.

When administering this product, it is crucial to adhere to the following dosage guidelines: patients should not exceed 7 tablets within a 24-hour period. For pregnant individuals, the maximum dosage should not exceed 5 tablets in a 24-hour timeframe. Additionally, the maximum dosage should not be utilized for more than 2 weeks unless under the guidance and supervision of a healthcare provider.

No specific general precautions or laboratory tests are required for the safe use of this product. It is essential for healthcare professionals to monitor patients for adherence to these guidelines to ensure safe and effective use.

Side Effects

Patients should be aware of potential adverse reactions associated with the use of this product. It is important to consult a healthcare professional before use, especially for individuals currently taking prescription medications, as antacids may interact with certain drugs.

In clinical settings, participants have been advised not to exceed a dosage of 7 tablets within a 24-hour period. For pregnant individuals, the recommended maximum is limited to 5 tablets in the same timeframe. Furthermore, it is crucial not to utilize the maximum dosage for more than 2 weeks unless under the guidance and supervision of a healthcare provider.

These precautions are essential to minimize the risk of adverse effects and ensure safe usage of the product.

Drug Interactions

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

Packaging & NDC

Below are the non-prescription pack sizes of Marc Glassman (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Marc Glassman.
Details

Pediatric Use

Pediatric patients aged 12 years and older may chew 2-3 tablets completely as symptoms occur, or as directed by a healthcare professional. It is important to keep this medication out of reach of younger children to ensure safety.

Geriatric Use

There is no specific information 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 they may have altered pharmacokinetics and pharmacodynamics. Close monitoring is recommended to ensure safety and efficacy in this population.

Pregnancy

Pregnant patients are advised not to exceed a dosage of 5 tablets within a 24-hour period. This precaution is essential to minimize potential risks to fetal outcomes. Healthcare professionals should counsel women of childbearing potential regarding the importance of adhering to this dosage limit during pregnancy to ensure the safety of both the mother and the developing fetus.

Lactation

There are no specific warnings or recommendations regarding the use of this product in nursing mothers. Additionally, there is no information available about the potential for excretion in breast milk or any associated risks to breastfed infants.

Renal Impairment

There is no specific information available regarding dosage adjustments, special monitoring, or safety considerations for patients with renal impairment. Healthcare professionals should exercise caution when prescribing to patients with reduced kidney function, as the absence of detailed guidance necessitates careful clinical judgment. Regular monitoring of renal function may be advisable in 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 absence of specific overdosage information, it is essential for healthcare professionals to remain vigilant and consider general principles of management in cases of suspected overdose.

Healthcare providers should monitor patients closely for any signs or symptoms that may arise from an overdose of the medication. Common symptoms may include, but are not limited to, altered mental status, cardiovascular instability, and gastrointestinal disturbances.

In the event of an overdose, it is recommended that healthcare professionals initiate supportive care immediately. This may involve maintaining the patient's airway, breathing, and circulation, as well as providing symptomatic treatment as necessary.

Additionally, contacting a poison control center or a medical toxicologist for guidance on specific management strategies is advisable. It is crucial to gather as much information as possible regarding the substance involved, the amount ingested, and the time of exposure to facilitate appropriate treatment decisions.

Documentation of the incident and ongoing monitoring of the patient’s clinical status are also critical components of effective overdose management.

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 assessment of potential risks associated with the use of the compound in question.

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 or misuse. It is important to emphasize the necessity of proper storage to ensure the safety of young individuals.

Storage and Handling

The product is supplied in a container that must be kept tightly closed to maintain its integrity. It should be stored at room temperature to ensure optimal conditions. Additionally, it is important to note that the product is safety sealed; therefore, it should not be used if the printed seal under the cap is torn or missing.

Additional Clinical Information

The medication is administered orally. There are no additional details available regarding laboratory tests, abuse information, patient counseling, or postmarketing experience.

Drug Information (PDF)

This file contains official product information for Marc Glassman, 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 Marc Glassman, retrieved by a validated AI data-extraction workflow.

All FDA-listed dosage forms and strengths are shown in the Packaging & NDC Codes section above. Regulatory status appears in the Summary Information panel above and was verified in the FDA National Drug Code directory and the NSDE NDC Directory daily file.

Note: an automated daemon monitors NSDE checksums; when the record for this NDC changes, the new file is pulled instantly and this page is refreshed.

No human clinician has reviewed this version.

Learn more in our Editorial Policy

Last AI update:

Primary FDA sources:

Orange Book data shown on this page are limited to Regulatory Status (Rx), Established Pharmacologic Class (EPC), and Mechanism of Action (MoA).

Regulatory data notice: Information on this page is reproduced verbatim from FDA public databases (NSDE, Orange Book, Purple Book, DailyMed SPL). NDA/ANDA drugs are FDA-approved, BLA biologics are FDA-licensed. Inclusion alone does not guarantee current market availability or imply FDA endorsement.

Medical disclaimer: This AI-generated content is provided for educational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional for diagnosis or treatment decisions.