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Maximum Strength Antacid and Antigas

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Active ingredients
  • Dimethicone 80 mg/10 mL
  • Aluminum Hydroxide 800 mg/10 mL
  • Magnesium Hydroxide 800 mg/10 mL
Other brand names
Drug classes
Calculi Dissolution Agent, Osmotic Laxative
Dosage form
Suspension
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2025
Label revision date
July 30, 2025
Active ingredients
  • Dimethicone 80 mg/10 mL
  • Aluminum Hydroxide 800 mg/10 mL
  • Magnesium Hydroxide 800 mg/10 mL
Other brand names
Drug classes
Calculi Dissolution Agent, Osmotic Laxative
Dosage form
Suspension
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2025
Label revision date
July 30, 2025
Manufacturer
Meijer, Inc.
Registration number
M001
NDC root
79481-0638

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Drug Overview

You may find this medication helpful if you experience discomfort from heartburn, a sour stomach, or acid indigestion. It works by relieving these symptoms, including those associated with gas. This can provide you with much-needed relief and improve your overall comfort.

Uses

If you're experiencing discomfort from heartburn, a sour stomach, or acid indigestion, this medication can help relieve those symptoms. It also addresses issues related to gas, providing you with some much-needed comfort.

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 digestive discomfort with this effective option.

Dosage and Administration

Before you use this medication, make sure to shake the bottle well. If you are an adult or a child aged 12 years and older, you should take between 10 mL to 20 mL (which is about 1 to 2 doses) of the medication. You can take it between meals, at bedtime, or as your doctor has directed. However, be careful not to exceed 60 mL (or 6 doses) in a 24-hour period, and avoid using the maximum dosage for more than 2 weeks.

If your child is under 12 years old, it’s important to consult a doctor before giving them this medication. When measuring your dose, use the dosing cup that comes with the medication to ensure accuracy. Remember, 1 mL is equal to one milliliter, which is a standard measurement for liquid medications.

What to Avoid

There are no specific contraindications, controlled substance classifications, or concerns regarding abuse, misuse, or dependence associated with this medication. Additionally, there are no explicit instructions indicating that you should not take or use this medication. Always consult with your healthcare provider for personalized advice and to ensure this medication is appropriate for you.

Side Effects

Before using this medication, it's important to consult with your doctor if you have kidney disease or are on a magnesium-restricted diet. Additionally, if you are currently taking any prescription medications, check with your doctor or pharmacist, as antacids can interact with some of these drugs.

If your symptoms persist for more than two weeks, you should stop using the medication and seek medical advice. If you are pregnant or breastfeeding, please consult a healthcare professional before using this product.

Warnings and Precautions

Before using this medication, it's important to consult with your doctor if you have kidney disease or are on a magnesium-restricted diet. Additionally, if you are currently taking any prescription medications, check with your doctor or pharmacist first, as antacids can interact with some drugs.

If your symptoms persist for more than two weeks, stop using the medication and contact your doctor. If you are pregnant or breastfeeding, please seek advice from a healthcare professional before using this product. Remember to keep this medication out of reach of children to ensure their safety.

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 attention.

In case of an emergency, call your local emergency services or go to the nearest hospital. Always keep your medications in a safe place and follow the prescribed dosage to prevent any potential risks. 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 children under 12 years of age should consult a doctor before use. For those aged 12 and older, the recommended dosage is between 10 mL to 20 mL, which can be taken as 1 to 2 doses between meals or at bedtime, unless directed otherwise by a healthcare professional.

Please remember that no one should exceed 60 mL (or 6 doses) in a 24-hour period, and the maximum dosage should not be used for more than 2 weeks. Always prioritize safety and consult with a healthcare provider if you have any questions or concerns about using this medication for your child.

Geriatric Use

If you are an older adult or caring for one, it's important to consult a doctor before using this medication, especially if there are any concerns about kidney disease or if you are following a magnesium-restricted diet. For adults and children aged 12 and older, the recommended dosage is between 10 mL to 20 mL (1 to 2 doses) taken between meals or at bedtime, as directed by a healthcare professional.

Be mindful not to exceed 60 mL (6 doses) in a 24-hour period, and avoid using the maximum dosage for more than two weeks. If the person you are caring for is under 12 years old, please consult a doctor for guidance.

Renal Impairment

If you have kidney disease, it's important to consult your doctor before using this medication. Your healthcare provider can help determine if it's safe for you and if any adjustments to your dosage are necessary. Always prioritize open communication with your doctor regarding your kidney health to ensure the best care.

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 want 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 be aware that antacids, which are commonly used to relieve heartburn and indigestion, can interact with some prescription medications. This means that taking antacids alongside certain drugs may affect how well those 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 you are taking, including over-the-counter products like antacids, with your healthcare provider. They can help ensure that your treatments are safe and effective.

Storage and Handling

To ensure the best performance of your product, store it at room temperature in a tightly closed container. It's important to keep it away from freezing temperatures, as exposure to freezing can damage the product.

When handling the product, always make sure to keep it in a safe and clean environment to maintain its integrity. Following these simple storage and handling 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 symptoms does this drug relieve?

This drug relieves heartburn, sour stomach, acid indigestion, and symptoms referred to as gas.

What is the recommended dosage for adults and children 12 years and older?

Adults and children 12 years and older should take 10 mL to 20 mL (1 to 2 doses) between meals, at bedtime, or as directed by a doctor.

What is the maximum dosage you should not exceed in 24 hours?

Do not take more than 60 mL (6 doses) in 24 hours.

How long can you use the maximum dosage?

Do not use the maximum dosage for more than 2 weeks.

What should you do if you are pregnant or breastfeeding?

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

Are there any warnings for people with kidney disease?

Yes, you should ask a doctor before use if you have kidney disease.

What should you do if symptoms last more than 2 weeks?

Stop use and ask a doctor if symptoms last more than 2 weeks.

How should you store this drug?

Store at room temperature tightly closed and protect from freezing.

What should you do if you are taking prescription drugs?

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

What should children under 12 years of age do before using this drug?

Children under 12 years of age should ask a doctor before use.

Packaging Info

Below are the non-prescription pack sizes of Maximum Strength Antacid and Antigas (aluminum hydroxide, magnesium hydroxide, simethicone). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Maximum Strength Antacid and Antigas.
Details

Drug Information (PDF)

This file contains official product information for Maximum Strength Antacid and Antigas, 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 heartburn, sour stomach, acid indigestion, and symptoms associated with gas.

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

Dosage and Administration

The medication should be shaken well before use. For adults and children aged 12 years and older, the recommended dosage is 10 mL to 20 mL, which may be taken as 1 to 2 doses between meals or at bedtime, or as directed by a healthcare professional. It is important not to exceed a total of 60 mL (6 doses) within a 24-hour period. Additionally, the maximum dosage should not be used for more than 2 weeks.

For children under 12 years of age, it is advised to consult a healthcare professional before administration. The medication should be measured using the dosing cup provided to ensure accurate dosing.

Contraindications

There are no contraindications listed for the use of this product. It is important to evaluate each patient's individual circumstances and medical history when considering treatment options.

Warnings and Precautions

Patients should consult a healthcare professional prior to use if they have a history of kidney disease or are on a magnesium-restricted diet. It is also advisable to seek guidance from a doctor or pharmacist if the patient is currently taking any prescription medications, as antacids may interact with certain drugs.

In the event that symptoms persist for more than two weeks, the patient should discontinue use and consult a healthcare provider for further evaluation. Additionally, pregnant or breastfeeding individuals are encouraged to seek advice from a health professional before using this product.

To ensure safety, this product should be kept out of reach of children.

Side Effects

Patients should be aware of certain warnings associated with the use of this medication. It is advised to consult a doctor before use if there is a history of kidney disease or if the patient is on a magnesium-restricted diet. Additionally, patients should seek guidance from a doctor or pharmacist if they are currently taking any prescription medications, as antacids may interact with specific drugs.

In the event that symptoms persist for more than two weeks, patients are instructed to discontinue use and consult a doctor. Furthermore, pregnant or breastfeeding individuals should consult a health professional prior to using this medication to ensure safety for both the mother and child.

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 Maximum Strength Antacid and Antigas (aluminum hydroxide, magnesium hydroxide, simethicone). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Maximum Strength Antacid and Antigas.
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 10 mL to 20 mL (1 to 2 doses) between meals, at bedtime, or as directed by a healthcare provider. It is important to note that no more than 60 mL (6 doses) should be taken within a 24-hour period, and the maximum dosage should not be used for more than 2 weeks.

Geriatric Use

Elderly patients should consult a healthcare provider prior to use if they have a history of kidney disease or if they are on a magnesium-restricted diet. For adults and children aged 12 years and older, the recommended dosage is 10 mL to 20 mL (1 to 2 doses) between meals, at bedtime, or as directed by a physician. It is important for geriatric patients to adhere to the maximum dosage limit of 60 mL (6 doses) within a 24-hour period and to avoid using the maximum dosage for more than 2 weeks.

For children under 12 years of age, it is advised to seek guidance from a healthcare provider before administration. Careful monitoring and consideration of individual health status are essential when prescribing this medication to elderly patients.

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 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 should consult a healthcare professional prior to use, particularly if they have a history of kidney disease. It is essential to assess renal function and consider potential dosing adjustments or monitoring requirements based on the degree of impairment.

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 prepared for potential scenarios involving overdose.

Healthcare providers should be aware that the clinical presentation of an overdose may vary significantly depending on the substance involved and the individual patient’s characteristics. Symptoms of overdose can range from mild to severe and may include altered mental status, cardiovascular instability, respiratory distress, and gastrointestinal disturbances.

In the event of suspected overdosage, immediate medical evaluation is recommended. Healthcare professionals should assess the patient's vital signs and conduct a thorough clinical examination. Supportive care should be initiated as necessary, which may include airway management, intravenous fluids, and monitoring of vital parameters.

If specific antidotes or treatments are available for the substance involved, they should be administered according to established protocols. Consultation with a poison control center or toxicology expert may also be beneficial in managing the case effectively.

It is crucial to document all findings and interventions in the patient's medical record to ensure continuity of care and facilitate further 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 compound in these areas.

Postmarketing Experience

Postmarketing experience has identified the following adverse reactions reported voluntarily or through surveillance programs: diarrhea, constipation, and abdominal pain. These events have been documented in the context of routine pharmacovigilance activities.

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 configuration that ensures optimal handling and storage. It must be stored at room temperature, tightly closed, to maintain its integrity. It is essential to protect the product from freezing to prevent any potential degradation. Proper adherence to these storage conditions is crucial for preserving the quality and efficacy of the product.

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 Maximum Strength Antacid and Antigas, 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 Maximum Strength Antacid and Antigas, 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.