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Aspirin

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Active ingredient
Aspirin 325 mg
Other brand names
Drug classes
Nonsteroidal Anti-inflammatory Drug, Platelet Aggregation Inhibitor
Dosage form
Tablet, Effervescent
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2022
Label revision date
December 4, 2025
Active ingredient
Aspirin 325 mg
Other brand names
Drug classes
Nonsteroidal Anti-inflammatory Drug, Platelet Aggregation Inhibitor
Dosage form
Tablet, Effervescent
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2022
Label revision date
December 4, 2025
Manufacturer
Bayer HealthCare LLC.
Registration number
M013
NDC root
0280-0087

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 medication that contains buffered aspirin, which is a type of nonsteroidal anti-inflammatory drug (NSAID). It is designed to provide fast relief from minor aches and pains, including headaches, muscle pain, backaches, toothaches, menstrual pain, and discomfort associated with colds or arthritis. Additionally, Alka-Seltzer helps to temporarily reduce fever.

This product comes in the form of effervescent tablets, which dissolve in water to create a fizzy drink. The original flavor makes it easy to take, and it is a convenient option for those seeking quick relief from everyday pain and fever.

Uses

This medication is designed to help you feel better by temporarily relieving minor aches and pains. You can use it for headaches, muscle pain, backaches, toothaches, menstrual pain, and even discomfort from colds or minor arthritis. Additionally, it can help reduce fever, making it a versatile option for managing common discomforts.

Rest assured, there are no known teratogenic effects (which means it doesn't cause birth defects) associated with this medication, so it is considered safe in that regard.

Dosage and Administration

To take your medication, start by fully dissolving 2 tablets in 4 ounces of water. This mixture should be consumed as directed. For adults and children aged 12 years and older, you can take 2 tablets every 4 hours, but make sure not to exceed 8 tablets in a 24-hour period.

If you are an adult aged 60 years or older, you should also take 2 tablets every 4 hours, but limit your intake to a maximum of 4 tablets in a 24-hour period. For children under 12 years old, it’s important to consult a doctor before giving them this medication to ensure it’s safe and appropriate for their age.

What to Avoid

You should avoid using this product if you are allergic to aspirin or any other pain reliever or fever reducer. Additionally, if you have ever experienced an allergic reaction to this product or any of its ingredients, it is important not to use it. Taking these precautions helps ensure your safety and well-being.

Side Effects

Using this product may come with some serious risks. If you are a child or teenager recovering from chickenpox or flu-like symptoms, you should avoid it due to the potential for Reye’s syndrome, a rare but serious illness. Be aware that aspirin can cause severe allergic reactions, which may include hives, facial swelling, asthma (wheezing), or even shock.

Additionally, this product contains a nonsteroidal anti-inflammatory drug (NSAID), which can lead to severe stomach bleeding, especially if you are over 60, have a history of stomach ulcers, or are taking certain medications like blood thinners or other NSAIDs. If you experience symptoms such as feeling faint, vomiting blood, or having bloody or black stools, seek medical attention immediately. Always consult your doctor if you have a history of stomach problems, high blood pressure, or other health conditions before using this product.

Warnings and Precautions

It's important to be aware of some serious warnings when using this product. If you are a child or teenager recovering from chickenpox or flu-like symptoms, you should not use this product, as it could lead to Reye’s syndrome, a rare but serious illness. Additionally, be cautious of potential allergic reactions, which may include hives, facial swelling, asthma (wheezing), or shock. This product contains a nonsteroidal anti-inflammatory drug (NSAID), which can cause severe stomach bleeding, especially if you are over 60, have a history of stomach ulcers, or consume alcohol regularly.

Before using this product, consult your doctor if you have a history of stomach problems, high blood pressure, heart disease, liver cirrhosis, or kidney disease. It's also wise to check with your doctor or pharmacist if you are taking medications for diabetes, gout, or arthritis. If you experience any signs of an allergic reaction or stomach bleeding—such as feeling faint, vomiting blood, or having bloody or black stools—stop using the product and seek medical help immediately. In case of an overdose, contact a Poison Control Center or seek emergency medical assistance right away.

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 number or go to the nearest hospital. Always keep medications out of reach of children 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 crucial to consult with a healthcare professional before using any medication. This is particularly important for aspirin; using it after 20 weeks of pregnancy can lead to serious issues for your unborn child or complications during delivery. Always seek guidance from your doctor to ensure the safety of both you and your baby.

Lactation Use

If you are pregnant or breastfeeding, it's important to consult with a healthcare professional before using any medication. Specifically, if you are considering taking aspirin after 20 weeks of pregnancy, you should only do so if your doctor has specifically advised it. This is crucial because using aspirin during this time can lead to potential issues for your unborn child or complications during delivery. Always prioritize your health and your baby's well-being by seeking professional guidance.

Pediatric Use

If you are considering this product for your child, it's important to be aware of some specific guidelines. Children and teenagers who have or are recovering from chickenpox or flu-like symptoms should not use this product, as it could lead to a serious condition called Reye’s syndrome (a rare but serious illness). If your child experiences changes in behavior along with nausea and vomiting while using this product, you should consult a doctor immediately, as these could be early signs of Reye’s syndrome.

For dosing, adults and children aged 12 years and older can take 2 tablets every 4 hours, but should not exceed 8 tablets in a 24-hour period. If your child is under 12 years old, it’s essential to consult a doctor for appropriate guidance on use. Always prioritize your child's safety and well-being by following these recommendations.

Geriatric Use

If you are 60 years or older, it's important to be aware that this product contains a type of medication called an NSAID, which can increase the risk of severe stomach bleeding. This risk is higher for older adults, so you should use this medication with caution.

For those aged 60 and over, the recommended dosage is 2 tablets every 4 hours, but you should not take more than 4 tablets in a 24-hour period unless directed by your doctor. Always consult with your healthcare provider to ensure this medication is safe for you, especially if you have any underlying health conditions.

Renal Impairment

If you have kidney issues, 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 include special monitoring or safety considerations tailored for patients with renal impairment (kidney problems).

Always consult your healthcare provider for personalized advice and to ensure that any treatment plan is safe and effective for your specific health needs. They can provide guidance based on your kidney function and overall 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 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 liver function tests (which check how well your liver is working) to ensure your safety while using any medication.

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 feel free to ask questions and share your complete list of medications and any lab tests you may be undergoing. This way, you can receive the best possible care tailored to your needs.

Storage and Handling

To ensure the best performance of your product, store it at room temperature and keep it away from excessive heat. This helps maintain its effectiveness and safety.

When handling the product, always do so with care to avoid any damage. Following these simple storage and handling guidelines will help you use the product safely and effectively.

Additional Information

No further information is available.

FAQ

What is Alka-Seltzer used for?

Alka-Seltzer is a buffered aspirin (NSAID) that temporarily relieves minor aches and pains, such as headaches, muscle pain, backaches, toothaches, menstrual pain, colds, and minor arthritis pain. It also temporarily reduces fever.

How should I take Alka-Seltzer?

You should fully dissolve 2 tablets in 4 ounces of water before taking. Adults and children 12 years and over can take 2 tablets every 4 hours, not exceeding 8 tablets in 24 hours.

Are there any age restrictions for using Alka-Seltzer?

Children under 12 years should consult a doctor before use. Adults 60 years and over should not exceed 4 tablets in 24 hours.

What should I do if I experience an allergic reaction?

If you experience an allergic reaction, seek medical help right away. Symptoms may include hives, facial swelling, asthma, or shock.

What are the warnings associated with Alka-Seltzer?

Warnings include the risk of Reye’s syndrome in children recovering from chicken pox or flu-like symptoms, severe allergic reactions, and the potential for stomach bleeding, especially in older adults or those with certain medical conditions.

Can I use Alka-Seltzer if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, consult a health professional before use. It is particularly important not to use aspirin at 20 weeks or later in pregnancy unless directed by a doctor.

What should I do in case of overdose?

In case of overdose, get medical help or contact a Poison Control Center immediately.

How should I store Alka-Seltzer?

Store Alka-Seltzer at room temperature and avoid excessive heat.

Packaging Info

Below are the non-prescription pack sizes of Alka-Seltzer Original Flavor. Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Alka-Seltzer Original Flavor.
Details

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Original Flavor, 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 temporary relief of minor aches and pains associated with various conditions, including headache, muscle pain, backache, toothache, menstrual pain, colds, and minor pain of arthritis. Additionally, it is indicated for the temporary reduction of fever.

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

Dosage and Administration

The recommended dosage for adults and children aged 12 years and older is to fully dissolve 2 tablets in 4 ounces of water prior to administration. The dosing frequency is every 4 hours, or as directed by a healthcare professional. It is important not to exceed 8 tablets within a 24-hour period.

For adults aged 60 years and older, the same initial dosage of 2 tablets every 4 hours applies, or as directed by a healthcare professional. However, this population should not exceed 4 tablets in a 24-hour period.

For children under 12 years of age, it is advised to consult a healthcare professional for appropriate dosing recommendations.

Contraindications

Use of this product is contraindicated in individuals with a known allergy to aspirin or any other pain reliever or fever reducer. Additionally, it should not be used in patients who have a history of allergic reactions to this product or any of its components.

Warnings and Precautions

Children and teenagers who are experiencing or recovering from chickenpox or flu-like symptoms should not use this product due to the risk of Reye’s syndrome, a rare but serious illness. If any changes in behavior accompanied by nausea and vomiting occur while using this product, it is imperative to consult a healthcare professional immediately, as these may be early signs of Reye’s syndrome.

Aspirin may induce severe allergic reactions, which can manifest as hives, facial swelling, asthma (wheezing), or shock. Healthcare professionals should be vigilant for these symptoms and advise patients to seek immediate medical attention if they occur.

This product contains a nonsteroidal anti-inflammatory drug (NSAID), which carries a risk of severe stomach bleeding. The likelihood of this adverse effect is increased in individuals who are 60 years of age or older, have a history of stomach ulcers or bleeding problems, are taking anticoagulants or steroid medications, are using other NSAIDs (including aspirin, ibuprofen, or naproxen), consume three or more alcoholic drinks daily while using this product, or exceed the recommended dosage or duration of use.

Healthcare professionals should advise patients to consult a doctor prior to use if any of the following conditions apply: a history of stomach problems such as heartburn, high blood pressure, heart disease, liver cirrhosis, kidney disease, use of diuretics, asthma, or if they are on a sodium-restricted diet. Additionally, patients should seek guidance from a doctor or pharmacist if they are taking prescription medications for diabetes, gout, or arthritis.

In the event of an overdose, it is crucial to seek emergency medical assistance or contact a Poison Control Center immediately.

Patients should discontinue use and contact their healthcare provider if they experience any signs of an allergic reaction, such as hives or swelling. They should also seek medical attention if they notice any symptoms indicative of stomach bleeding, including feeling faint, vomiting blood, passing bloody or black stools, experiencing persistent stomach pain, or if pain worsens or lasts longer than 10 days. Furthermore, if fever persists or worsens beyond three days, if redness or swelling occurs, if new symptoms arise, or if there is ringing in the ears or loss of hearing, patients should stop taking the product and consult their doctor.

Side Effects

Patients using this product should be aware of several serious and common adverse reactions associated with its use.

Reye’s syndrome is a rare but serious illness that may occur in children and teenagers who have or are recovering from chickenpox or flu-like symptoms. Patients should not use this product under these circumstances. If changes in behavior accompanied by nausea and vomiting occur, it is crucial to consult a healthcare professional, as these symptoms could indicate the onset of Reye’s syndrome.

Aspirin, the active ingredient in this product, may cause severe allergic reactions in some individuals. Symptoms of such reactions can include hives, facial swelling, asthma (wheezing), and shock. Patients experiencing any signs of an allergic reaction should seek medical attention immediately.

This product contains a nonsteroidal anti-inflammatory drug (NSAID), which carries a risk of severe stomach bleeding. The likelihood of this adverse reaction is increased in patients who are 60 years of age or older, have a history of stomach ulcers or bleeding problems, are taking anticoagulants or steroid medications, are using other NSAIDs (including aspirin, ibuprofen, or naproxen), consume three or more alcoholic drinks daily while using this product, or exceed the recommended dosage or duration of use.

Patients are advised to stop using the product and consult a doctor if they experience any signs of stomach bleeding, which may include feeling faint, vomiting blood, having bloody or black stools, or experiencing stomach pain that does not improve. Additional symptoms warranting medical consultation include worsening pain lasting more than 10 days, fever persisting for more than three days, the presence of redness or swelling, the emergence of new symptoms, or any ringing in the ears or loss of hearing.

Before using this product, patients should consult a healthcare professional if they have a history of stomach problems such as heartburn, high blood pressure, heart disease, liver cirrhosis, or kidney disease. Additionally, those taking diuretics, have asthma, or are on a sodium-restricted diet should seek medical advice prior to use. It is also recommended that patients taking prescription medications for diabetes, gout, or arthritis consult a doctor or pharmacist before 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 Alka-Seltzer Original Flavor. Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Alka-Seltzer Original Flavor.
Details

Pediatric Use

Children and teenagers who have or are recovering from chicken pox or flu-like symptoms should not use this product due to the risk of Reye’s syndrome, a rare but serious illness. If changes in behavior accompanied by nausea and vomiting occur while using this product, it is important to consult a doctor, as these may be early signs of Reye’s syndrome.

For dosing, adults and children aged 12 years and over are directed to take 2 tablets every 4 hours, not to exceed 8 tablets in a 24-hour period. For children under 12 years of age, consultation with a doctor is recommended prior to use.

Geriatric Use

Elderly patients, particularly those aged 60 years and older, are at an increased risk of severe stomach bleeding when using this product, which contains a nonsteroidal anti-inflammatory drug (NSAID). Due to this heightened risk, careful consideration and monitoring are advised when prescribing this medication to geriatric patients.

For adults aged 60 years and over, the recommended dosage is 2 tablets every 4 hours, or as directed by a healthcare provider. It is crucial that elderly patients do not exceed a total of 4 tablets within a 24-hour period to minimize the risk of adverse effects.

Healthcare providers should exercise caution and consider individual patient factors when determining the appropriateness of this medication for elderly patients, ensuring that they are adequately monitored for any signs of gastrointestinal complications.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional before using this medication. The use of aspirin during pregnancy, particularly at 20 weeks gestation or later, is associated with potential risks. Specifically, it may lead to adverse effects on fetal outcomes or complications during delivery. Therefore, it is crucial that pregnant patients only use aspirin under the guidance of a qualified healthcare provider if deemed necessary.

Lactation

Lactating mothers are advised to consult a health professional before using this medication. It is particularly important to avoid the use of aspirin at 20 weeks of pregnancy or later unless specifically directed by a physician, as it may pose risks to the unborn child or lead to complications during delivery. There is no specific data available regarding the excretion of this medication in breast milk or its effects on breastfed infants. Therefore, caution is recommended when considering the use of this medication during lactation.

Renal Impairment

Patients with renal impairment may not have specific information regarding dosage adjustments, special monitoring, or safety considerations outlined in the available data. Therefore, healthcare professionals should exercise caution and consider individual patient factors when prescribing to patients with reduced kidney function. Regular monitoring of renal function is advisable to ensure safe and effective use of the medication in this 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 indicate an overdose. These may include, but are not limited to, altered mental status, cardiovascular instability, or gastrointestinal disturbances.

Management of an overdose should be tailored to the individual patient and may involve supportive care, symptomatic treatment, and, if applicable, the use of specific antidotes. It is crucial to consult local poison control guidelines and the product's prescribing information for detailed management protocols.

In summary, while specific overdosage data is not available, healthcare professionals should exercise caution and be prepared to act swiftly in the event of an overdose scenario.

Nonclinical Toxicology

It is especially important not to use aspirin at 20 weeks or later in pregnancy unless definitely directed to do so by a doctor, as it may cause problems in the unborn child or complications during delivery. No specific non-teratogenic effects have been identified in the available data. Additionally, there are no specific details regarding nonclinical toxicology or animal pharmacology and toxicology provided in the text.

Postmarketing Experience

Postmarketing experience has identified several adverse reactions reported voluntarily or through surveillance programs. These include allergic reactions such as hives, facial swelling, asthma (wheezing), and shock. Additionally, cases of stomach bleeding have been noted, particularly in patients who are 60 years of age or older, have a history of stomach ulcers or bleeding problems, are taking blood-thinning (anticoagulant) or steroid medications, are using other drugs that contain prescription or nonprescription nonsteroidal anti-inflammatory drugs (NSAIDs), consume three or more alcoholic drinks daily while using this product, or exceed the recommended duration or dosage.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion. In the event of an overdose, patients should be instructed to seek medical help or contact a Poison Control Center immediately.

Patients must be informed not to use this product if they are allergic to aspirin or any other pain reliever or fever reducer. Additionally, they should not use it if they have previously experienced an allergic reaction to this product or any of its ingredients. If an allergic reaction occurs, patients should stop using the medication and seek medical assistance right away.

Healthcare providers should counsel patients to discontinue use and consult a doctor if they experience any signs of stomach bleeding, which may include feeling faint, vomiting blood, having bloody or black stools, or experiencing stomach pain that does not improve. Patients should also be advised to seek medical attention if pain worsens or lasts more than 10 days, if fever worsens or lasts more than 3 days, if redness or swelling occurs, if new symptoms develop, or if they experience ringing in the ears or a loss of hearing.

Patients should be encouraged to consult a doctor before using this medication if the stomach bleeding warning applies to them. It is also important to discuss their medical history, particularly if they have a history of stomach problems such as heartburn, high blood pressure, heart disease, liver cirrhosis, or kidney disease. Patients taking diuretics, those with asthma, or those on a sodium-restricted diet should also be advised to consult a doctor prior to use.

Finally, patients should be encouraged to speak with their doctor or pharmacist if they are taking prescription medications for diabetes, gout, or arthritis to ensure safe use of this product.

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It is essential to store the product at room temperature, ensuring that it is kept away from excessive heat to maintain its integrity and efficacy. Proper storage conditions are crucial for preserving the quality of the product throughout its shelf life.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Alka-Seltzer Original Flavor, 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 Original Flavor, 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.

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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.