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Exchange Select Antacid

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Active ingredient
Calcium Carbonate 1177 mg
Other brand names
Drug classes
Blood Coagulation Factor, Phosphate Binder
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 2025
Label revision date
October 21, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Calcium Carbonate 1177 mg
Other brand names
Drug classes
Blood Coagulation Factor, Phosphate Binder
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 2025
Label revision date
October 21, 2025
Manufacturer
Army & Air Force Exchange Service
Registration number
M001
NDC root
55301-591
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

If you're experiencing discomfort from heartburn, acid indigestion, or a sour stomach, there are medications designed to help relieve these symptoms. These medications can also provide relief for an upset stomach that is associated with these issues. They work by reducing the amount of acid in your stomach, which can help alleviate the burning sensation and discomfort you may feel.

Using these medications can help you feel more comfortable and improve your overall digestive health. If you have any questions about how they work or whether they are right for you, it's always a good idea to consult with a healthcare professional.

Uses

If you're experiencing discomfort from heartburn, acid indigestion, or a sour stomach, this medication can help relieve those symptoms. It is also effective for soothing an upset stomach that may be associated 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) or nonteratogenic effects reported.

Dosage and Administration

When you need relief from certain symptoms, you can take this medication by chewing 2 to 3 chews. Make sure to chew them completely and do this up to 2 times a day, or follow your doctor's instructions. It's important not to swallow the chews whole, as they need to be fully chewed to work effectively.

If your symptoms last longer than 2 weeks, you should consult your doctor before continuing to use the medication. This ensures that you are using it safely and effectively. Always follow the guidance provided by your healthcare professional for the best results.

What to Avoid

It's important to use this product safely to avoid potential issues. You should not take more than 6 chews in a 24-hour period. Additionally, if you need to use the maximum dosage, do so for no longer than 2 weeks unless your doctor advises otherwise. If you are pregnant, limit your intake to no more than 4 chews in 24 hours.

Always prioritize your health and consult with a healthcare professional if you have any questions or concerns about using this product.

Side Effects

It's important to be aware that if you are currently taking any prescription medications, you should consult with your doctor or pharmacist before using this product. Antacids can interact with certain prescription drugs, which may affect how well they work or increase the risk of side effects. Always prioritize your health by seeking professional advice when combining medications.

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 not to exceed 6 chews in a 24-hour period, and avoid using the maximum dosage for more than 2 weeks unless directed by a healthcare professional. If you are pregnant, limit your intake to no more than 4 chews in 24 hours.

While there are no specific laboratory tests required for this product, always stay alert to how your body responds. If you experience any unusual symptoms or have concerns, it's best to reach out to your doctor for guidance.

Overdose

It appears that there is no specific information available regarding overdosage for this medication. However, it's always important to be aware of the signs of an overdose, which can include unusual drowsiness, confusion, or difficulty breathing. If you suspect that you or someone else may have taken too much of a medication, it’s crucial to seek immediate medical help.

In case of an overdose, contact your local emergency services or go to the nearest hospital. Having the medication packaging or information on hand can help medical professionals provide the best care. Always remember that when it comes to medications, it's better to be safe and get help if you have any concerns.

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

When using this medication for children, it's important to note that it is intended for those aged 12 years and older. If your child falls within this age group, they can chew 2 to 3 pieces as needed for symptoms, up to two times a day, or as directed by their doctor.

Always ensure that this medication is kept out of reach of younger 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 is safe and effective, especially if you have any concerns about your kidney health.

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 for the medication do not change based on liver function. However, it’s always a good idea to discuss your liver health with your healthcare provider before starting any new medication. They can help ensure that your treatment is safe and effective for you.

Make sure to keep your doctor informed about any liver issues you may have, as they may want to monitor your liver function regularly while you are on medication. Your health and safety are the top priority, so don’t hesitate to ask questions or express any concerns you might 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 share your complete list of medications and any recent lab tests to avoid any potential issues. Your health and safety should always come first.

Storage and Handling

To ensure the safety and effectiveness of your product, store it at room temperature, ideally between 20-25ºC (68-77ºF). It's important to keep the bag tightly closed to protect the contents. Before using, always check the packaging; do not use the product if the packaging is torn or damaged, as this could compromise its safety. Following these guidelines will help you handle the product properly and maintain its quality.

Additional Information

No further information is available.

FAQ

What symptoms does this drug relieve?

This drug relieves heartburn, acid indigestion, sour stomach, and upset stomach associated with these symptoms.

How should adults and children 12 years and older use this drug?

Adults and children 12 years of age and over should chew 2-3 chews completely as symptoms occur, up to 2 times daily or as directed by a doctor.

What is the maximum dosage for this drug?

Do not take more than 6 chews in 24 hours, and do not use the maximum dosage for more than 2 weeks unless advised by a doctor.

What should pregnant individuals know about using this drug?

If pregnant, do not take more than 4 chews in 24 hours and consult a health professional before use.

Are there any contraindications for this drug?

No specific contraindications are mentioned for this drug.

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 this drug be stored?

Store at room temperature between 20-25ºC (68-77ºF) and keep the bag tightly closed. Do not use if the packaging is torn or damaged.

What should I do if symptoms persist?

Do not take this drug for symptoms that persist for more than 2 weeks unless advised by a doctor.

Packaging Info

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

Packaging configurations for Exchange Select Antacid.
Details

Drug Information (PDF)

This file contains official product information for Exchange Select Antacid, 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 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 chews completely as symptoms occur, with a maximum frequency of 2 times daily or as directed by a healthcare professional. It is essential that the chews are not swallowed whole.

Patients should be advised not to use this product for symptoms that persist for more than 2 weeks unless directed by a physician.

Contraindications

Use of this product is contraindicated in the following situations:

Exceeding the recommended dosage of more than 6 chews in a 24-hour period is contraindicated due to potential adverse effects. Additionally, the maximum dosage should not be used for more than 2 weeks unless under the advice and supervision of a healthcare professional, as prolonged use may lead to complications. In pregnant individuals, the intake should not exceed 4 chews in 24 hours to mitigate risks to the fetus.

Warnings and Precautions

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

It is essential to adhere to the recommended dosage guidelines. Patients should not exceed 6 chews within a 24-hour period. Furthermore, the maximum dosage should not be utilized for more than 2 weeks unless directed and monitored by a healthcare provider. Special caution is warranted for pregnant individuals, who should limit their intake to no more than 4 chews in a 24-hour timeframe.

No specific laboratory tests are indicated for monitoring in relation to the use of this product. However, healthcare professionals should remain vigilant for any potential interactions with other medications and advise patients accordingly.

Side Effects

Patients should be advised to consult a healthcare professional, such as a doctor or pharmacist, prior to using this product if they are currently taking any prescription medications. This caution is particularly important as antacids may interact with certain prescription drugs, potentially leading to adverse reactions or diminished efficacy of the prescribed treatment.

No additional serious or common adverse reactions have been reported in clinical trials or postmarketing experiences. However, the potential for drug interactions underscores the importance of careful medication management in patients using this 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 Exchange Select Antacid (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Exchange Select Antacid.
Details

Pediatric Use

Pediatric patients aged 12 years and older may chew 2-3 chews as symptoms occur, up to 2 times daily or as directed by a healthcare professional. It is important to keep this product 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 individual responses may vary. It is advisable to monitor these patients closely for any 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 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 drug 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 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. These may include, but are not limited to, increased severity of known side effects, altered mental status, or any unusual physiological responses.

Management of an overdose should be guided by the clinical presentation of the patient. Supportive care is paramount, and symptomatic treatment should be initiated as necessary. Healthcare professionals should also consider contacting a poison control center for additional guidance on the management of overdose cases.

In summary, while specific overdosage information is not available, healthcare professionals should exercise caution, monitor for symptoms, and provide appropriate supportive care in the event of an overdose.

Nonclinical Toxicology

If pregnant, it is advised not to exceed four chews within a 24-hour period. Additionally, individuals who are pregnant or breastfeeding should consult a healthcare professional prior to use. No specific non-teratogenic effects have been identified in the available data. Furthermore, there are no detailed findings regarding nonclinical toxicology or animal pharmacology and toxicology provided in the current information.

Postmarketing Experience

Serious side effects have been reported voluntarily through various channels, including surveillance programs. Individuals are encouraged to report any serious adverse events to the designated phone number available Monday through Friday from 9:00 a.m. to 5:00 p.m. ET.

Patient Counseling

Healthcare providers should advise patients to keep this product out of reach of children to prevent accidental ingestion.

When discussing the usage of this product, it is important to inform patients that they should not exceed a maximum of 6 chews within a 24-hour period. Additionally, patients should be cautioned against using the maximum dosage for more than 2 weeks unless directed and supervised by a healthcare professional.

For patients who are pregnant, it is essential to recommend that they limit their intake to no more than 4 chews in a 24-hour period. This guidance is crucial to ensure the safety and well-being of both the patient and the developing fetus.

Storage and Handling

The product is supplied in a secure bag that must be kept tightly closed to maintain integrity. It should be stored at room temperature, specifically within the range of 20-25ºC (68-77ºF). Healthcare professionals are advised not to use the product if the packaging is torn or damaged, as this may compromise its quality and safety.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Exchange Select Antacid, 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 Exchange Select Antacid, 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.