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Genexa Antacid Maximum Strength

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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 2025
Label revision date
July 18, 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 2025
Label revision date
July 18, 2025
Manufacturer
Genexa Inc.
Registration number
M001
NDC root
69676-0098
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

Genexa® Antacid Maximum Strength is a clean medicine designed to provide relief from common stomach discomforts. It contains 1000 mg of calcium carbonate, the same active ingredient found in TUMS Ultra Strength 1000, and is formulated without artificial additives, preservatives, flavors, or dyes. This antacid is available in a pleasant berry flavor and comes in a pack of 72 chewable tablets.

You can use Genexa® Antacid to help relieve heartburn, acid indigestion, sour stomach, and upset stomach associated with these symptoms. Its clean formulation makes it a suitable choice for those looking for effective relief without common allergens or artificial ingredients.

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 reported teratogenic effects (which means it doesn't cause birth defects) or nonteratogenic effects. This makes it a safe option for managing your digestive discomfort.

Dosage and Administration

If you are an adult or a child aged 12 years and older, you should chew 2 to 3 tablets when you experience symptoms, or follow your doctor's instructions if they have provided specific guidance. It's important to chew the tablets rather than swallow them whole, as this helps the medication work more effectively.

You can take the tablets as needed, meaning you should use them whenever you start to feel symptoms. Just remember to follow any additional directions from your healthcare provider to ensure you are using the medication safely and effectively.

What to Avoid

It's important to use this medication safely to avoid potential risks. You should not take more than 7 tablets in a 24-hour period. If you are pregnant, limit your intake to no more than 5 tablets in the same timeframe. Additionally, refrain from using the maximum dosage for more than 2 weeks unless your doctor has advised and is supervising you.

By following these guidelines, you can help ensure your safety while using this medication. Always consult with your healthcare provider if you have any questions or concerns about your treatment.

Side Effects

It's important to be aware of potential side effects when using this product. You should consult your doctor if you are on a sodium-restricted diet or taking any prescription medications, as antacids can interact with certain drugs. While using this product, do not exceed 7 tablets in a 24-hour period, and if you are pregnant, limit your intake to 5 tablets in the same timeframe. Additionally, avoid using the maximum dosage for more than 2 weeks unless directed by a healthcare professional.

Always keep this product out of reach of children to ensure their safety. If you experience any unusual symptoms or have concerns, please reach out to your healthcare provider for guidance.

Warnings and Precautions

Before using this medication, it's important to consult your doctor if you are on a sodium-restricted diet, as it may not be suitable for you. Additionally, if you are currently taking any prescription medications, please speak with your doctor or pharmacist first, since antacids can interact with certain drugs.

While there are no specific laboratory tests or emergency instructions provided, always stay alert to how your body responds to the medication. If you experience any unusual symptoms or have concerns, don’t hesitate to reach out to your healthcare provider for guidance.

Overdose

If you suspect an overdose, it's important to stay calm and take immediate action. While there is no specific information available about the signs of overdose for this medication, general symptoms can include unusual drowsiness, confusion, or difficulty breathing. If you notice any of these signs, or if you are unsure, seek medical help right away.

In case of an overdose, contact your local emergency services or go to the nearest hospital. It's always better to be safe and get checked by a healthcare professional if you have any concerns about your health. Remember, timely intervention can make a significant difference.

Pregnancy Use

If you are pregnant, it’s important to be cautious with medication. You should not take more than 5 tablets in a 24-hour period. Additionally, avoid using the maximum dosage for more than 2 weeks unless your doctor has advised and is supervising you. Always consult with your healthcare provider before taking any medication during pregnancy to ensure the safety of you and your baby.

Lactation Use

If you are breastfeeding or planning to breastfeed, it's important to know that the information available does not provide specific guidelines or considerations for nursing mothers or lactation (the process of producing milk). This means that there are no clear recommendations or warnings regarding the use of this medication while breastfeeding.

As always, it's best to consult with your healthcare provider about any medications you are taking to ensure they are safe for you and your baby. They can provide personalized advice based on your situation.

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 can chew 2-3 tablets as needed for their symptoms, or follow the guidance of a healthcare professional.

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 with your child's doctor.

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 be adjusted 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 condition. They can help monitor your kidney health and make any necessary changes 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 ensure that any medication you take is safe and appropriate for your liver health. They can help monitor your condition and make any necessary adjustments to your treatment plan.

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 antacids at the same time as certain drugs may affect how well those medications work.

To ensure your safety and the effectiveness of your treatment, always discuss any medications you are taking, including over-the-counter products like antacids, with your healthcare provider. They can help you understand potential interactions and adjust your treatment plan if necessary.

Storage and Handling

To ensure the best quality and safety of your product, store it in a dry place at a temperature between 20-25°C (68-77°F), away from direct sunlight. This helps maintain its effectiveness. Before using, check that the bottle seal under the cap is intact; do not use it if the seal is disturbed or missing, as this could compromise the product.

Additionally, keep the product out of reach of children to prevent any accidental ingestion or misuse. Following these guidelines will help you use the product safely and effectively.

Additional Information

It's important to follow some guidelines when using this product. If you are on a sodium-restricted diet or currently taking a prescription medication, consult your doctor or pharmacist before use, as antacids can interact with certain drugs.

While using this product, remember not to exceed 7 tablets in a 24-hour period. 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.

FAQ

What is Genexa® Antacid Maximum Strength?

Genexa® Antacid Maximum Strength is a clean medicine that contains 1000 mg of Calcium carbonate, the same active ingredient as TUMS Ultra Strength 1000, and is free of artificial additives.

What symptoms does Genexa® Antacid relieve?

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

How should I take Genexa® Antacid?

Adults and children 12 years and older should chew 2-3 tablets as symptoms occur or as directed by a doctor.

Are there any dosage restrictions?

Do not take more than 7 tablets in 24 hours, and if pregnant, do not take more than 5 tablets in 24 hours. Do not use the maximum dosage for more than 2 weeks without a doctor's advice.

What should I do if I have a sodium restricted diet?

You should ask a doctor before using Genexa® Antacid if you have a sodium restricted diet.

Can I take Genexa® Antacid with prescription drugs?

Yes, but you should ask a doctor or pharmacist before use, as antacids may interact with certain prescription drugs.

Is Genexa® Antacid safe during pregnancy?

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

How should I store Genexa® Antacid?

Store it between 20-25°C (68-77°F) in a dry place out of direct sunlight and keep it out of reach of children.

Packaging Info

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

Packaging configurations for Genexa Antacid Maximum Strength.
Details

Drug Information (PDF)

This file contains official product information for Genexa Antacid Maximum Strength, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

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 12 years of age and older are instructed to chew 2 to 3 tablets as symptoms occur, or as directed by a healthcare professional. The tablets should be chewed thoroughly before swallowing to ensure optimal absorption and effectiveness.

Contraindications

Use is contraindicated in the following situations:

Taking more than 7 tablets within a 24-hour period is contraindicated due to the potential for adverse effects. In pregnant individuals, the use of more than 5 tablets in a 24-hour period is contraindicated to avoid risks to the fetus. Additionally, the maximum dosage should not be used for more than 2 weeks unless under the advice and supervision of a healthcare professional, to mitigate the risk of complications associated with prolonged high-dose use.

Warnings and Precautions

It is imperative that healthcare professionals advise patients to consult a physician prior to use if they are on a sodium-restricted diet. This precaution is essential to prevent potential complications associated with sodium intake.

Additionally, patients should be encouraged to seek guidance from a healthcare provider or pharmacist before initiating use if they are currently taking any prescription medications. Antacids have the potential to interact with certain prescription drugs, which may affect therapeutic outcomes or lead to adverse effects.

No specific laboratory tests have been identified for monitoring in relation to the use of this product. However, healthcare professionals should remain vigilant and consider the overall medication regimen of the patient to ensure safe and effective use.

Side Effects

Patients should be aware of the following warnings and precautions associated with the use of this product. Individuals on a sodium-restricted diet should consult a doctor before use. Additionally, patients who are currently taking prescription medications are advised to seek guidance from a healthcare professional or pharmacist, as antacids may interact with certain prescription drugs.

When using this product, it is important for patients to adhere to the recommended dosage guidelines. Specifically, patients should not exceed 7 tablets within a 24-hour period. Pregnant individuals should limit their intake to no more than 5 tablets in a 24-hour period. Furthermore, the maximum dosage should not be used for more than 2 weeks unless directed and supervised by a healthcare provider.

As a precautionary measure, this product should be kept out of reach of children to prevent accidental ingestion.

Drug Interactions

Antacids may interact with various prescription medications, potentially affecting their absorption and efficacy. It is advisable to monitor the timing of antacid administration in relation to other medications to minimize these interactions. Specifically, antacids should be taken at least 2 hours apart from other drugs to ensure optimal therapeutic effects and to avoid diminished efficacy of the prescribed medications.

Packaging & NDC

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

Packaging configurations for Genexa Antacid Maximum Strength.
Details

Pediatric Use

Pediatric patients aged 12 years and older may chew 2-3 tablets 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 individual responses may vary. Monitoring for potential adverse effects and therapeutic efficacy is recommended in this population.

Pregnancy

Pregnant patients should not exceed a dosage of 5 tablets within a 24-hour period. Additionally, the maximum dosage should not be used for more than 2 weeks unless advised and supervised by a healthcare professional. It is important for healthcare providers to consider these limitations when prescribing this medication to pregnant patients, as prolonged use or exceeding the recommended dosage may pose risks to fetal outcomes. Careful monitoring and consultation with a physician are advised to ensure the safety of both the mother and the developing fetus.

Lactation

There are no specific statements or considerations provided regarding nursing mothers or lactation in the prescribing information. Therefore, healthcare professionals should exercise caution and consider the absence of data when advising lactating mothers about the use of this medication. The potential effects on breastfed infants and the excretion of the drug in breast milk remain unspecified.

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 information regarding overdosage, healthcare professionals are advised to exercise caution and adhere to general principles of management in cases of suspected overdose.

It is essential to monitor the patient closely for any potential symptoms that may arise from an overdose. Symptoms can vary widely depending on the substance involved and the individual patient's response.

In the event of an overdose, immediate medical attention should be sought. Healthcare providers should initiate supportive care, which may include maintaining airway patency, ensuring adequate ventilation, and monitoring vital signs.

If available, the use of specific antidotes or treatments should be considered based on the substance involved and the clinical presentation. Consultation with a poison control center or a medical toxicologist may provide additional guidance on the management of overdose cases.

Documentation of the incident, including the amount and timing of the substance taken, is crucial for effective treatment and follow-up care.

Nonclinical Toxicology

No teratogenic effects were observed in animal studies. Additionally, there was no increase in fetal malformations noted in these studies. The available data do not indicate any concerns regarding teratogenicity or non-teratogenic effects in the context of nonclinical toxicology.

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.

When discussing the use of this product, it is important to inform patients that they should not exceed a dosage of 7 tablets within a 24-hour period. For pregnant patients, the maximum dosage should not exceed 5 tablets in 24 hours. Additionally, patients should be cautioned against using the maximum dosage for more than 2 weeks unless under the advice and supervision of a healthcare professional.

Providers should encourage patients to consult with their doctor before using this product if they are on a sodium-restricted diet. Furthermore, it is essential to recommend that patients speak with their doctor or pharmacist prior to use if they are currently taking any prescription medications, as antacids may interact with certain drugs.

Storage and Handling

The product is supplied in a container that must be stored at a temperature range of 20-25°C (68-77°F). It should be kept in a dry place, away from direct sunlight, to maintain its integrity.

Healthcare professionals are advised to inspect the bottle seal under the cap prior to use; the product should not be utilized if the seal is disturbed or missing. Additionally, it is essential to keep this product out of reach of children to ensure safety.

Additional Clinical Information

Patients should consult a healthcare professional before using this product if they are on a sodium-restricted diet or currently taking prescription medications, as antacids may interact with certain drugs. While using this product, it is important for patients to adhere to the recommended dosage, which should not exceed 7 tablets in a 24-hour period. Pregnant individuals should limit their intake to a maximum of 5 tablets in 24 hours. Additionally, the maximum dosage should not be used for more than 2 weeks unless directed and supervised by a physician.

Drug Information (PDF)

This file contains official product information for Genexa Antacid Maximum Strength, 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 Genexa Antacid Maximum Strength, 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.