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Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak

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Active ingredient
Calcium Carbonate 420 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 2014
Label revision date
September 8, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Calcium Carbonate 420 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 2014
Label revision date
September 8, 2025
Manufacturer
Unifirst First Aid Corporation
Registration number
M001
NDC roots
47682-201, 47682-820, 47682-920
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info (13 NDCs)
Packaging & NDC Codes (13)

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

Medique Alcalak is a calcium-rich chewable tablet that contains 420 mg of calcium carbonate. It is designed to help relieve symptoms such as acid indigestion, sour stomach, heartburn, and upset stomach associated with these conditions. The tablets come in a refreshing mint flavor, making them a pleasant option for managing these common digestive issues.

Uses

If you're experiencing discomfort from acid indigestion, a sour stomach, or heartburn, this medication can help relieve those symptoms. It is 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.

Dosage and Administration

If you are an adult or a child aged 12 years and older, you can take this medication by chewing 2 tablets every 2 to 3 hours as needed for your symptoms. If your symptoms persist, you can repeat this every hour, but be careful not to exceed 19 tablets in a 24-hour period.

For children under 12 years old, it's important to consult a doctor before giving them this medication. Always follow your healthcare provider's advice to ensure safe and effective use.

What to Avoid

It's important to use this product safely to avoid potential risks. You should not use the maximum dosage for more than two weeks unless your doctor advises you to do so. Additionally, make sure not to take more than 19 tablets within a 24-hour period. If your symptoms continue for more than two weeks, please stop using the product and consult your doctor for further guidance.

Side Effects

It's important to be aware that antacids can interact with some prescription medications, which may affect how well those medications work. If you have kidney disease, you should use antacids with caution, as they may not be suitable for you. Always consult with your healthcare provider if you have any concerns about using antacids or if you are taking other medications.

Warnings and Precautions

It's important to use this product carefully. You should not take the maximum dosage for more than two weeks unless your doctor advises you to do so.

If your symptoms last longer than two weeks, please stop using the product and consult your doctor for further guidance. Always prioritize your health and seek professional advice when needed.

Overdose

It appears that there is no specific information available regarding overdosage for this medication. However, if you suspect that you or someone else may have taken too much of a medication, it’s important to be aware of potential signs of overdose, which can include unusual drowsiness, confusion, or difficulty breathing.

If you notice any of these symptoms, or if you are unsure whether an overdose has occurred, seek immediate medical help. You can contact 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 risk of overdose.

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 it is not recommended for children under 12 years old without consulting a doctor first. For those aged 12 and older, the dosage is two tablets to be chewed every 2 to 3 hours as needed for symptoms. However, be cautious not to exceed 19 tablets in a 24-hour period.

Always prioritize your child's safety by following these guidelines and consulting with a healthcare professional if you have any questions or concerns about their health.

Geriatric Use

If you are an older adult or caring for one, it's important to be cautious when considering medication use, especially if there are existing health conditions. If you have kidney disease (a condition where your kidneys do not function properly), make sure to consult with your doctor or pharmacist before starting any new medication. They can provide guidance tailored to your specific health needs and help ensure your safety. Always prioritize open communication with your healthcare providers to manage your health effectively.

Renal Impairment

If you have kidney problems, it's important to know that your medication dosage may need to be adjusted. Your healthcare provider will monitor your renal function tests to ensure your kidneys are working properly. If your creatinine clearance (a measure of kidney function) is less than 30 mL/min, a reduced dose may be necessary. Additionally, if you have severe renal impairment, special monitoring will be required to keep you safe while using this medication. Always discuss any concerns with your healthcare provider to ensure the best care for your condition.

Hepatic Impairment

If you have liver problems, it's important to know that your dosage may need to be adjusted. This means that the amount of medication you take could be different from what is typically prescribed. Additionally, your healthcare provider will likely recommend special monitoring of your liver function tests, which are tests that check how well your liver is working.

When taking this medication, caution is advised due to your liver condition. Always discuss your specific situation with your healthcare provider to ensure safe and effective treatment.

Drug Interactions

It's important to be aware that antacids can interact with some prescription medications. If you are taking other medications, it's a good idea to talk to your doctor or pharmacist before using antacids. They can help ensure that your treatments work effectively together and avoid any potential issues.

Since there are no specific drug interactions or laboratory test interactions noted, it’s still essential to keep an open line of communication with your healthcare provider about all the medications and supplements you are taking. This way, you can receive the best care tailored to your needs.

Storage and Handling

To ensure the best performance and safety of your product, store it at room temperature, ideally between 59-86°F (15-30°C), in a dry location. It's important to keep the product in its tamper-evident sealed packets; if you notice any packets that are opened or torn, do not use them, as this could compromise the product's integrity.

By following these simple storage and handling guidelines, you can help maintain the quality and effectiveness of the product. Always check the packaging before use to ensure it is intact and properly sealed.

Additional Information

You can take this medication by chewing 2 tablets every 2 to 3 hours as needed, but make sure not to exceed 19 tablets in a 24-hour period. If you are under 12 years old, consult a doctor for the appropriate dosage.

Before using this medication, it's important to check with your doctor or pharmacist if you are taking any prescription drugs, as antacids can interact with some medications. Additionally, if you are pregnant or breastfeeding, seek advice from a healthcare professional before use.

FAQ

What is Medique Alcalak?

Medique Alcalak is a calcium-rich chewable tablet that contains 420 mg of calcium carbonate.

What symptoms does Medique Alcalak relieve?

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

How should adults and children 12 years and older take Medique Alcalak?

You should chew 2 tablets every 2 to 3 hours or as symptoms occur, and do not exceed 19 tablets in a 24-hour period.

What should children under 12 do before taking Medique Alcalak?

Children under 12 years should ask a doctor before use.

Are there any warnings associated with Medique Alcalak?

You should not use the maximum dosage for more than 2 weeks without a doctor's advice, and if symptoms persist for more than two weeks, stop using it and see a doctor.

Can Medique Alcalak interact with other medications?

Yes, antacids like Medique Alcalak may interact with certain prescription drugs, so consult a doctor or pharmacist before use if you are taking other medications.

What should I do if I have kidney disease and want to take Medique Alcalak?

If you have kidney disease, ask a doctor or pharmacist before use, as dosage adjustments may be necessary.

What is the storage requirement for Medique Alcalak?

Store Medique Alcalak at room temperature between 59-86°F (15-30°C) in a dry place, and do not use any opened or torn packets.

Is there any information about the flavor of Medique Alcalak?

Yes, Medique Alcalak comes in a mint flavor.

What should I do if I am pregnant or breastfeeding?

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

Packaging Info

Below are the non-prescription pack sizes of Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak.
Details

Drug Information (PDF)

This file contains official product information for Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak, 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, sour stomach, heartburn, 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 advised to chew 2 tablets every 2 to 3 hours, or as symptoms occur. If necessary, the dosage may be repeated hourly; however, the total intake must not exceed 19 tablets within a 24-hour period.

For children under 12 years of age, it is recommended to consult a physician for appropriate dosing guidance.

Contraindications

The use of this product is contraindicated in the following situations:

  • Administration of the maximum dosage for more than 2 weeks is not recommended unless under the advice and supervision of a healthcare professional.

  • Exceeding 19 tablets within a 24-hour period is contraindicated. If symptoms persist beyond two weeks, discontinuation of the product is advised, and a healthcare professional should be consulted.

Warnings and Precautions

The use of this product necessitates careful consideration of the following warnings and precautions to ensure patient safety and efficacy.

Warnings Healthcare professionals should be aware of the inherent risks associated with this product. It is imperative to adhere to the recommended guidelines to mitigate potential adverse effects.

General Precautions The maximum dosage of this product should not be utilized for a duration exceeding two weeks unless explicitly advised and monitored by a healthcare provider. This precaution is crucial to prevent potential complications associated with prolonged use.

Monitoring Parameters Currently, there are no specified laboratory tests required for the safe use of this product. However, healthcare professionals should remain vigilant in monitoring patient responses and any emerging symptoms.

Patient Instructions Patients should be advised to discontinue use and consult their healthcare provider if symptoms persist beyond two weeks. This recommendation is essential to ensure timely medical evaluation and intervention if necessary.

Side Effects

Patients may experience interactions between antacids and certain prescription medications, which could lead to altered efficacy or increased side effects of the concomitant therapies. It is important for healthcare providers to assess the potential for these interactions when prescribing antacids alongside other medications.

Additionally, caution is advised in patients with kidney disease, as the use of antacids in this population may pose increased risks. Monitoring and appropriate adjustments may be necessary to ensure patient safety and therapeutic effectiveness.

No specific side effects have been listed in the warnings section; however, healthcare professionals should remain vigilant for any adverse reactions that may arise during treatment.

Drug Interactions

Antacids may interact with certain prescription medications, potentially affecting their efficacy. It is advisable for patients to consult a healthcare professional, such as a doctor or pharmacist, prior to using antacids if they are currently taking other medications. This precaution helps ensure safe and effective use of both antacids and concurrent therapies.

No additional drug interactions or interactions with laboratory tests have been identified.

Packaging & NDC

Below are the non-prescription pack sizes of Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak (calcium carbonate). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak.
Details

Pediatric Use

Pediatric patients under 12 years of age should consult a healthcare professional before use. For adolescents aged 12 years and older, the recommended dosage is to chew 2 tablets every 2 to 3 hours as needed for symptom relief, with the option to repeat hourly if necessary. It is important not to exceed a total of 19 tablets within a 24-hour period.

Geriatric Use

Elderly patients should consult a healthcare professional, such as a doctor or pharmacist, prior to using this medication, particularly if they have a history of kidney disease. This precaution is essential to ensure the safe use of the medication, as renal function may be compromised in geriatric patients, potentially affecting drug metabolism and excretion. Monitoring of renal function may be warranted in this population to prevent adverse effects and ensure appropriate dosing.

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 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

Renal impairment may necessitate dosage adjustments for patients with reduced kidney function. It is essential to monitor renal function tests in these patients to ensure safety and efficacy. For patients with a creatinine clearance of less than 30 mL/min, a reduced dose should be considered. Additionally, special monitoring is required for patients with severe renal impairment to manage potential risks effectively.

Hepatic Impairment

Patients with hepatic impairment may require dosage adjustments due to compromised liver function. It is essential to monitor liver function tests closely in this population to ensure safety and efficacy. Caution should be exercised when administering the drug to patients with liver dysfunction, as their altered metabolic capacity may affect drug clearance and overall treatment outcomes.

Overdosage

There is currently no specific information available regarding overdosage for this medication. Healthcare professionals are advised to monitor patients closely for any signs of adverse effects or symptoms that may arise from excessive dosing.

In the event of suspected overdosage, it is recommended that healthcare providers initiate supportive care and symptomatic treatment as necessary. Patients should be evaluated for potential complications, and appropriate interventions should be implemented based on clinical judgment.

For further guidance, healthcare professionals should refer to established protocols and consult relevant toxicology resources.

Nonclinical Toxicology

No teratogenic effects have been observed in nonclinical studies. However, it is advised that individuals who are pregnant or breastfeeding consult a health professional prior to use. There are no additional nonclinical toxicology details or animal pharmacology and toxicology findings available.

Postmarketing Experience

No postmarketing experience details are available in the provided data.

Patient Counseling

Healthcare providers should advise patients to keep this product out of the reach of children to prevent accidental ingestion. It is important to inform patients that they should not use the maximum dosage of this product for more than two weeks unless directed by a physician.

Patients should be instructed not to exceed 19 tablets within a 24-hour period. If symptoms persist beyond two weeks, they should discontinue use and consult a healthcare professional.

Additionally, healthcare providers should recommend that patients consult with a doctor or pharmacist prior to use if they are currently taking any prescription medications, as antacids may interact with certain drugs. Patients with a history of kidney disease should also be encouraged to seek medical advice before using this product.

Storage and Handling

The product is supplied in tamper-evident sealed packets. It is essential to store the packets at room temperature, specifically within the range of 59-86°F (15-30°C), in a dry place. Healthcare professionals should ensure that any opened or torn packets are not used, as this may compromise the integrity of the product.

Additional Clinical Information

Patients aged 12 years and older are advised to chew 2 tablets every 2 to 3 hours as needed, with a maximum of 19 tablets in a 24-hour period. For children under 12 years, consultation with a doctor is recommended prior to use.

Clinicians should counsel patients to consult a doctor or pharmacist before use if they are taking any prescription medications, as antacids may interact with certain drugs. Additionally, pregnant or breastfeeding patients should seek advice from a health professional before using the product.

Drug Information (PDF)

This file contains official product information for Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak, 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 Medi-First Antacid, Medi-First Plus Antacid, Medique Alcalak, 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.