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Alka-Seltzer Extra Strength Heartburn Reliefchews

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Active ingredient
Calcium Carbonate 750 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 2016
Label revision date
December 4, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Calcium Carbonate 750 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 2016
Label revision date
December 4, 2025
Manufacturer
Bayer HealthCare LLC.
Registration number
M001
NDC root
0280-0042
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info (4 NDCs)
Packaging & NDC Codes (4)

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

Alka-Seltzer is a type of antacid that comes in the form of chewable tablets, specifically designed to provide extra strength relief from heartburn and related symptoms. It is used to help alleviate discomfort caused by acid indigestion, heartburn, sour stomach, and upset stomach associated with these issues.

Manufactured by Bayer, Alka-Seltzer offers fast and powerful relief, making it a convenient option for those seeking to ease their digestive discomfort. The tablets come in assorted fruit flavors, making them more pleasant to take.

Uses

If you're experiencing discomfort from acid indigestion, heartburn, sour stomach, or an upset stomach related to these symptoms, this medication can help provide relief. It’s designed to ease the discomfort associated with these common digestive issues, allowing you to feel more comfortable throughout your day.

Rest assured, there are no known teratogenic effects (which means it doesn't cause birth defects) or nonteratogenic effects associated with this medication. This makes it a safer option for those concerned about potential risks.

Dosage and Administration

If you are an adult or a child aged 12 years and older, you can take 1 or 2 chewable tablets when you experience symptoms, or as your doctor advises. Make sure to chew the tablets completely before swallowing them. However, if you are under 12 years old, it’s important to consult with a doctor before taking any medication.

Remember, you should not exceed 5 chewable tablets in a 24-hour period. This limit helps ensure your safety and effectiveness of the medication. Always follow the guidance provided by your healthcare professional for the best results.

What to Avoid

You should avoid using this product if you have ever had an allergic reaction to it or any of its ingredients. It's important to follow the recommended dosage carefully: do not take more than 5 chewable tablets within a 24-hour period. Additionally, do not use the maximum dosage for more than 2 weeks unless your doctor advises and supervises you.

Be mindful that misuse or overuse of this product can lead to dependence (a condition where your body becomes reliant on a substance) and other serious issues. Always prioritize your health and safety by adhering to these guidelines.

Side Effects

If you have a history of allergic reactions to this product or any of its ingredients, it’s important not to use it. While using this product, you might experience constipation, which is a common side effect. If you notice any unusual symptoms or have concerns, please consult your healthcare provider.

Warnings and Precautions

You should not use this product if you have ever had an allergic reaction to it or any of its ingredients. It's important to consult with your doctor or pharmacist before using this product, especially if you are currently taking any prescription medications, as antacids can interact with certain drugs.

While there are no specific laboratory tests required for this product, always stay alert for any unusual symptoms. If you experience any concerning reactions, it’s best to stop using the product and reach out to your healthcare provider for guidance.

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 is crucial to seek immediate medical help.

In case of an emergency, call your local emergency services or go to the nearest hospital. Always keep your medications in their original packaging and follow the prescribed dosage to minimize the risk of an overdose. 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

If you are considering this medication for your child, it's important to know that you should consult a doctor before using it for children under 12 years old. For those aged 12 and older, the recommended dosage is to fully chew and then swallow 1 or 2 chewable tablets when symptoms occur, or as directed by a healthcare professional.

Be mindful of the maximum dosage: no more than 5 chewable tablets should be taken in a 24-hour period. Always follow these guidelines to ensure the safety and well-being of your child.

Geriatric Use

While there is no specific information available about the use of this medication in older adults, it’s important to approach any new treatment with caution. Since older adults may have different health needs and may be taking multiple medications, it’s always a good idea to consult with a healthcare provider before starting any new medication. They can help ensure that the treatment is safe and appropriate for your individual health situation.

If you or a loved one is an older adult, be sure to discuss any concerns about potential side effects or interactions with other medications you may be taking. Your healthcare provider can provide guidance tailored to your specific needs.

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 may affect you if you have hepatic impairment (liver issues).

Always consult your healthcare provider for personalized advice and to discuss any concerns regarding your liver health and how it may relate to your treatment. They can help ensure that you receive the safest and most effective care.

Drug Interactions

It's important to be aware that antacids, which are commonly used to relieve heartburn and indigestion, can interact with some prescription medications. This means that taking them together might affect how well your medications work. Since there are no specific drug interactions or laboratory test interactions listed for other medications, it’s still crucial to discuss all the medications and supplements you are taking with your healthcare provider.

By doing so, you can ensure that your treatment plan is safe and effective, and that you avoid any potential issues that could arise from combining different substances. Always keep your healthcare provider informed about any changes in your medication routine.

Storage and Handling

To ensure the best performance of your product, store it at room temperature and keep it away from humidity, as moisture can affect its effectiveness. After each use, make sure to close the cap tightly to maintain its integrity and prevent contamination.

By following these simple storage and handling guidelines, you can help ensure that your product remains safe and effective for your needs.

Additional Information

No further information is available.

FAQ

What is Alka-Seltzer used for?

Alka-Seltzer is used for the relief of acid indigestion, heartburn, sour stomach, and upset stomach associated with these symptoms.

How should I take Alka-Seltzer?

Adults and children 12 years and over should fully chew then swallow 1 or 2 chewable tablets as symptoms occur, or as directed by a doctor.

What is the maximum dosage of Alka-Seltzer?

Do not take more than 5 chewable tablets in a 24-hour period.

Can children under 12 use Alka-Seltzer?

Children under 12 years should consult a doctor before use.

Are there any warnings for using Alka-Seltzer?

Do not use Alka-Seltzer if you have ever had an allergic reaction to this product or any of its ingredients.

What should I do if I experience constipation while using Alka-Seltzer?

Constipation may occur when using this product; if it becomes bothersome, consult a healthcare professional.

Is it safe to use Alka-Seltzer if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, ask a health professional before use.

How should I store Alka-Seltzer?

Store Alka-Seltzer at room temperature and avoid humidity. Close the cap tightly after use.

Packaging Info

Below are the non-prescription pack sizes of Alka-Seltzer Extra Strength Heartburn Reliefchews (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Alka-Seltzer Extra Strength Heartburn Reliefchews.
Details

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Extra Strength Heartburn Reliefchews, 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 acid indigestion, heartburn, 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 over are instructed to fully chew and then swallow 1 or 2 chewable tablets as symptoms occur, or as directed by a healthcare professional. For children under 12 years of age, consultation with a doctor is recommended prior to administration.

It is important to note that the maximum dosage should not exceed 5 chewable tablets within a 24-hour period.

Contraindications

Use of this product is contraindicated in individuals with a known allergy to the product or any of its ingredients.

Additionally, the product should not be taken in excess of 5 chewable tablets within a 24-hour period. Prolonged use at the maximum dosage for more than 2 weeks is contraindicated unless directed and supervised by a physician.

Warnings and Precautions

The use of this product is contraindicated in individuals with a known history of allergic reactions to the product or any of its components. Healthcare professionals should ensure that patients are screened for such allergies prior to administration.

It is advisable for patients to consult with a healthcare provider, such as a doctor or pharmacist, before using this product if they are currently taking any prescription medications. This precaution is essential as antacids may have the potential to interact with certain prescription drugs, which could lead to diminished therapeutic effects or increased risk of adverse reactions.

Currently, there are no specific laboratory tests recommended for monitoring the use of this product. However, healthcare professionals should remain vigilant for any signs of adverse reactions or interactions, particularly in patients who are on concurrent medications.

Side Effects

Patients should be aware of the potential for serious allergic reactions associated with this product. It is contraindicated in individuals who have a history of allergic reactions to this product or any of its ingredients.

In clinical use, constipation has been reported as a common adverse reaction. Patients should be monitored for this effect, and appropriate management strategies should be considered if constipation occurs.

Drug Interactions

Antacids have the potential to interact with certain prescription medications. It is advisable for healthcare professionals to assess the timing of antacid administration in relation to other medications to minimize the risk of reduced efficacy of the affected drugs.

Currently, there is no specific information available regarding other drug interactions or interactions with laboratory tests. Therefore, monitoring and further evaluation may be necessary when prescribing medications alongside antacids or in the absence of detailed interaction data.

Packaging & NDC

Below are the non-prescription pack sizes of Alka-Seltzer Extra Strength Heartburn Reliefchews (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Alka-Seltzer Extra Strength Heartburn Reliefchews.
Details

Pediatric Use

Pediatric patients under 12 years of age should consult a doctor before use. For adolescents and children aged 12 years and older, the recommended dosage is to fully chew and then swallow 1 or 2 chewable tablets as symptoms occur, or as directed by a healthcare professional. The maximum dosage for this age group is not to exceed 5 chewable tablets within a 24-hour period.

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 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 safe use during pregnancy and lactation.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no available data on 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 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 unusual physiological changes.

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 toxicology specialist 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

If pregnant or breastfeeding, it is advised to consult a health professional prior to use. No specific non-teratogenic effects have been identified. Additionally, there are no detailed findings related to nonclinical toxicology or animal pharmacology and toxicology available.

Postmarketing Experience

No postmarketing experience details are available in the insert text.

Patient Counseling

Healthcare providers should advise patients to keep this product out of reach of children to prevent accidental ingestion. Patients should be informed not to use the product if they have ever experienced an allergic reaction to it or any of its ingredients.

When discussing the usage of this product, healthcare providers should emphasize the importance of adhering to the recommended dosage. Patients should be instructed not to exceed 5 chewable tablets within a 24-hour period and to avoid using the maximum dosage for more than 2 weeks unless directed by a physician. Providers should also inform patients that constipation may occur as a side effect of the product.

Additionally, healthcare providers should encourage patients to consult with a doctor or pharmacist before using this product if they are currently taking any prescription medications, as antacids may interact with certain drugs.

Storage and Handling

The product is supplied in a configuration that ensures optimal usability. It should be stored at room temperature, with precautions taken to avoid exposure to humidity. After each use, it is essential to close the cap tightly to maintain the integrity of the product.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Extra Strength Heartburn Reliefchews, 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 Alka-Seltzer Extra Strength Heartburn Reliefchews, 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

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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.