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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, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 1996
Label revision date
December 22, 2025
Active ingredient
Aspirin 325 mg
Other brand names
Drug classes
Nonsteroidal Anti-inflammatory Drug, Platelet Aggregation Inhibitor
Dosage form
Tablet, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 1996
Label revision date
December 22, 2025
Manufacturer
L. N. K. International, Inc.
Registration number
M013
NDC root
50844-157

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Drug Overview

Aspirin is a type of medication known as a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain and reduce fever. It can temporarily alleviate various types of discomfort, including headaches, toothaches, muscle pain, menstrual pain, and minor arthritis pain. Additionally, it helps to lower fever associated with colds.

When you take aspirin, it works by blocking certain chemicals in your body that cause pain and inflammation, providing you with relief from these symptoms. It's important to consult with your healthcare provider before using aspirin, especially if you plan to use it for heart-related purposes.

Uses

You can use this medication to temporarily relieve various types of pain and discomfort. It is effective for headaches, toothaches, and muscle pain, as well as for alleviating pain and fever associated with colds. If you experience menstrual pain or minor arthritis pain, this medication can also help provide relief.

It's important to note that there are no teratogenic effects (which means it does not cause birth defects) associated with this medication, making it a safer option for those who may be concerned about such risks.

Dosage and Administration

When taking this medication, it’s important to follow the directions carefully. You should not take more than the recommended amount. For adults and children aged 12 years and older, the typical dosage is either 1 or 2 tablets every 4 hours or 3 tablets every 6 hours. However, you should not exceed 12 tablets in a 24-hour period unless your doctor has instructed you to do so.

Make sure to drink a full glass of water with each dose to help the medication work effectively. If you are considering giving this medication to a child under 12 years old, please consult a doctor first, as it should not be used in that age group without medical advice.

What to Avoid

You should avoid using this product if you are allergic to aspirin or any other pain reliever or fever reducer. Additionally, do not use it if you have ever had an allergic reaction to this product or any of its ingredients. It's important to prioritize your safety and well-being by adhering to these guidelines. If you have any questions or concerns about your allergies or the ingredients, please consult with a healthcare professional.

Side Effects

You should be aware of some important side effects and warnings associated with this product. If you are a child or teenager recovering from chickenpox or flu-like symptoms, you should avoid using it, as it may lead to Reye's syndrome, a rare but serious illness. Additionally, be cautious of potential severe allergic reactions, which can include facial swelling, hives, shock, or asthma symptoms like wheezing.

This product contains a nonsteroidal anti-inflammatory drug (NSAID), which can increase the risk of 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, having bloody or black stools, or persistent stomach pain, you should stop using the product and consult a doctor immediately. Other concerning signs include ringing in the ears, worsening pain, or new symptoms.

Warnings and Precautions

You should be aware of some important warnings and precautions when using this product. If you are a child or teenager recovering from chickenpox or flu-like symptoms, do not use this product, as it may lead to Reye’s syndrome, a rare but serious illness. Additionally, be cautious of severe allergic reactions, which can include facial swelling, hives, shock, or asthma symptoms like wheezing. This product may also cause 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 (nonsteroidal anti-inflammatory drugs).

Before using this product, consult your doctor if you have a history of stomach problems, asthma, 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 gout, diabetes, 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

If you suspect an overdose, it’s crucial to seek medical help immediately or contact a Poison Control Center. Signs of an overdose can vary, but they may include unusual symptoms that are more severe than typical side effects.

Always err on the side of caution—if you think you or someone else may have taken too much of a medication, don’t wait for symptoms to appear. Getting prompt assistance can be vital for safety and recovery.

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; you should avoid taking it after 20 weeks of pregnancy unless your doctor specifically instructs you to do so. Using aspirin during this time can lead to potential issues for your unborn child or complications during delivery. Always prioritize your health and the health of your baby by seeking professional advice.

Lactation Use

If you are pregnant or breastfeeding, it's important to consult with a healthcare professional before using any medication. This is particularly crucial if you are considering taking aspirin after 20 weeks of pregnancy, as it can potentially lead to issues for your unborn child or complications during delivery. Always prioritize your health and your baby's well-being by seeking guidance from your doctor.

Pediatric Use

It's important to be cautious when giving this product to children. If your child is under 12 years old, you should only use it if a doctor specifically advises you to do so. Additionally, if your child has or is recovering from chickenpox or flu-like symptoms, they should not use this product. Watch for any changes in behavior accompanied by nausea and vomiting, as these could be early signs of Reye's syndrome, a rare but serious condition. If you notice these symptoms, consult a doctor immediately.

For children aged 12 and older, the recommended dosage is 1 or 2 tablets every 4 hours, or 3 tablets every 6 hours, but do not exceed 12 tablets in a 24-hour period unless directed by a doctor. Always prioritize your child's safety and consult a healthcare professional if you have any concerns.

Geriatric Use

As you age, it's important to be aware of certain health risks when taking medications. If you are 60 years or older, there is a higher chance of experiencing severe stomach bleeding. This risk is especially relevant if you have a history of stomach issues, such as heartburn, or if you have conditions like high blood pressure, heart disease, liver cirrhosis (a liver condition), or kidney disease.

Before starting any new medication, it's wise to consult with your doctor to ensure it's safe for you, particularly if any of these warnings apply to your health situation. Taking this precaution can help you manage your health more effectively and avoid potential complications.

Renal Impairment

If you have kidney problems, it's important to consult your doctor before using this medication. This is especially crucial if you also have high blood pressure, heart disease, or liver cirrhosis, as these conditions can affect how your body processes the medication. Your healthcare provider will help determine if this treatment is safe for you and may suggest adjustments based on your kidney function. Always prioritize open communication with your doctor regarding your health conditions to ensure the best care.

Hepatic Impairment

If you have liver problems, such as liver cirrhosis (a severe scarring of the liver), it's important to consult your doctor before using this medication. Your healthcare provider can help determine if it's safe for you, especially if you also have other conditions like high blood pressure or heart disease.

Always prioritize your health by discussing any existing liver issues with your doctor to ensure proper care and monitoring.

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 share your complete list of medications and any recent lab tests to avoid any potential issues. Your health and safety should always come first.

Storage and Handling

To ensure the best performance of your product, store it at a temperature of 25°C (77°F). It’s acceptable for the temperature to vary between 15°C and 30°C (59°F to 86°F) occasionally, but try to keep it as close to the recommended temperature as possible. Always check the expiration date on the package and use the product before that date to ensure its safety and effectiveness.

When handling the product, make sure to do so with clean hands and in a clean environment to maintain its integrity. Proper storage and careful handling are key to ensuring that the product remains safe and effective for your use.

Additional Information

You should take this medication orally. Before using it for your heart, it's important to talk to your doctor or another healthcare provider to ensure it's appropriate for you. They can provide guidance tailored to your specific health needs.

FAQ

What is aspirin used for?

Aspirin is a pain reliever and fever reducer that temporarily relieves headaches, toothaches, menstrual pain, muscle pain, and minor arthritis pain.

What should I do if I experience an allergic reaction to aspirin?

If you experience an allergic reaction, seek medical help right away.

What are the dosage instructions for adults and children over 12?

Adults and children 12 years and over should take 1 or 2 tablets every 4 hours or 3 tablets every 6 hours, not exceeding 12 tablets in 24 hours unless directed by a doctor.

Can children under 12 use aspirin?

Children under 12 years should not use aspirin unless directed by a doctor.

What precautions should I take if I have a history of stomach problems?

Ask a doctor before use if you have a history of stomach problems, such as heartburn, or if you have high blood pressure, heart disease, liver cirrhosis, or kidney disease.

Is there a risk of Reye's syndrome with aspirin?

Yes, children and teenagers recovering from chicken pox or flu-like symptoms should not use aspirin, as it may lead to Reye's syndrome, a rare but serious illness.

What should I do if I experience signs of stomach bleeding?

Stop use and call your doctor if you feel faint, vomit blood, have bloody or black stools, or have stomach pain that does not get better.

What should I do if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, consult a health professional before using aspirin, especially after 20 weeks of pregnancy.

What is the storage requirement for aspirin?

Store aspirin at 25°C (77°F), with permitted excursions between 15°-30°C (59°-86°F).

Packaging Info

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

Packaging configurations for Aspirin.
Details

Drug Information (PDF)

This file contains official product information for Aspirin, 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 drug.

Uses and Indications

This drug is indicated for the temporary relief of various types of pain and discomfort, including headache, toothache, menstrual pain, muscle pain, and minor pain associated with arthritis. Additionally, it is effective in alleviating pain and fever associated with colds.

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

Dosage and Administration

Patients should adhere strictly to the recommended dosage and administration guidelines. It is imperative not to exceed the directed dosage.

For adults and children aged 12 years and older, the recommended dosage is as follows: take 1 or 2 tablets every 4 hours, or 3 tablets every 6 hours. The total daily dosage must not exceed 12 tablets within a 24-hour period unless specifically directed by a healthcare professional.

For children under 12 years of age, the use of this medication is not recommended unless directed by a physician.

Each dose should be taken with a full glass of water to ensure proper administration and absorption.

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 administered to patients who have previously experienced an allergic reaction 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 indicators of Reye's syndrome.

Aspirin may provoke severe allergic reactions, which can manifest as facial swelling, hives, shock, or asthma symptoms such as wheezing. Healthcare professionals should be vigilant for these signs 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 disorders, are taking anticoagulants or steroid medications, are using other NSAIDs (including aspirin, ibuprofen, or naproxen), consume three or more alcoholic beverages daily, or exceed the recommended dosage or duration of use.

Healthcare providers should advise patients to consult a physician prior to using this product if they have a history of stomach issues, such as heartburn, asthma, high blood pressure, heart disease, liver cirrhosis, or kidney disease, or if they are currently taking diuretics. Additionally, patients should be encouraged to discuss their use of prescription medications for gout, diabetes, or arthritis with their healthcare provider or pharmacist before starting this product.

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

Patients should be instructed to discontinue use and contact their doctor if they experience any signs of an allergic reaction, such as difficulty breathing or swelling, or if they notice symptoms indicative of stomach bleeding, including feeling faint, vomiting blood, passing bloody or black stools, or experiencing persistent stomach pain. Other concerning symptoms that warrant immediate medical consultation include ringing in the ears, hearing loss, worsening pain lasting more than 10 days, fever that worsens or persists beyond three days, the emergence of new symptoms, or any redness or swelling. These symptoms may indicate a serious underlying condition that requires prompt evaluation.

Side Effects

Patients using this product should be aware of several serious 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. If patients experience changes in behavior accompanied by nausea and vomiting while using this product, they should consult a doctor immediately, as these symptoms could indicate the onset of Reye's syndrome.

Additionally, there is a significant risk of severe allergic reactions to aspirin, which may manifest as facial swelling, hives, shock, or asthma (wheezing). Patients experiencing any signs of an allergic reaction should seek medical attention promptly.

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 persistent stomach pain. Other concerning symptoms that warrant medical consultation include ringing in the ears or loss of hearing, worsening pain lasting more than 10 days, fever that worsens or lasts more than three days, the emergence of new symptoms, or the presence of redness or swelling. These symptoms could indicate a serious condition requiring immediate medical evaluation.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there are no known interactions with laboratory tests. As such, no specific recommendations for dosage adjustments or monitoring are necessary at this time.

Packaging & NDC

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

Packaging configurations for Aspirin.
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 any changes in behavior accompanied by nausea and vomiting occur while using this product, a healthcare professional should be consulted, as these may be early signs of Reye's syndrome.

For children under 12 years of age, the product should not be used unless directed by a doctor. For adolescents aged 12 years and older, the recommended dosage is 1 or 2 tablets every 4 hours or 3 tablets every 6 hours, with a maximum of 12 tablets in a 24-hour period unless otherwise directed by a healthcare professional.

Geriatric Use

Elderly patients, particularly those aged 60 and older, are at an increased risk for severe stomach bleeding. It is essential for healthcare providers to exercise caution when prescribing this medication to geriatric patients, especially if they have a history of gastrointestinal issues, such as heartburn, or if they have comorbid conditions including high blood pressure, heart disease, liver cirrhosis, or kidney disease.

Before initiating treatment, healthcare providers should inquire about the presence of any of these risk factors in elderly patients. Close monitoring for signs of gastrointestinal bleeding is recommended in this population to ensure patient safety and to mitigate potential adverse effects.

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 the unborn child or complications during delivery. Therefore, it is crucial that pregnant patients only use aspirin under the guidance of a 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 gestation or later, 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 should consult a healthcare professional prior to use, particularly if they have comorbid conditions such as high blood pressure, heart disease, liver cirrhosis, or kidney disease. It is essential to assess renal function and consider potential dosing adjustments or monitoring requirements based on the severity of renal impairment.

Hepatic Impairment

Patients with hepatic impairment should consult a healthcare professional prior to use, particularly if they have conditions such as liver cirrhosis. It is essential for these patients to receive appropriate medical guidance to assess the potential risks and benefits associated with the use of this medication. Monitoring of liver function may be necessary to ensure safety and efficacy in this population. Adjustments to dosage or treatment regimens may be required based on the severity of hepatic impairment and the patient's overall health status.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay. Prompt intervention is crucial to mitigate potential adverse effects associated with the overdose.

Healthcare professionals should be aware that the specific symptoms of an overdose may vary depending on the substance involved. Therefore, a thorough assessment of the patient's condition is essential to determine the appropriate course of action.

Management of an overdose typically involves supportive care and symptomatic treatment. Continuous monitoring of the patient's vital signs and clinical status is recommended. In cases where the specific substance is known, targeted therapies may be employed as indicated.

It is essential for healthcare providers to remain vigilant and act swiftly in the management of overdose situations to ensure optimal patient outcomes.

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 or additional nonclinical toxicology details are provided in the available data. Furthermore, there are no specific findings related to animal pharmacology and toxicology mentioned.

Postmarketing Experience

No postmarketing experience details are available in the insert text.

Patient Counseling

Healthcare providers should advise patients to seek immediate medical help or contact a Poison Control Center in the event of an overdose. It is essential to inform patients that they should not use this product if they are allergic to aspirin or any other pain reliever or fever reducer. Additionally, patients must be cautioned against using the product if they have previously experienced an allergic reaction to it or any of its ingredients.

Patients should be instructed to stop using the product and consult a doctor if they experience any signs of an allergic reaction, and to seek medical assistance right away. They should also be made aware of the signs of stomach bleeding, which include feeling faint, vomiting blood, having bloody or black stools, or experiencing stomach pain that does not improve. In such cases, patients should be advised to stop use and contact a healthcare professional.

Furthermore, patients should be informed to discontinue use and consult a doctor if they experience ringing in the ears or a loss of hearing. They should also be advised to seek medical advice if their pain worsens or persists for more than 10 days, if their fever intensifies or lasts more than 3 days, or if new symptoms arise. Any presence of redness or swelling should prompt patients to stop use and consult a doctor, as these may indicate a serious condition.

Healthcare providers should encourage patients to consult a doctor before using the product if they have a history of stomach problems, such as heartburn, or if the stomach bleeding warning applies to them. Patients with asthma, high blood pressure, heart disease, liver cirrhosis, or kidney disease should also be advised to seek medical advice prior to use. Additionally, those taking a diuretic or prescription medications for gout, diabetes, or arthritis should be encouraged to consult a doctor or pharmacist before using this product.

Storage and Handling

The product is supplied in packaging that includes specific NDC numbers. It should be stored at a controlled room temperature of 25°C (77°F). Temporary excursions are permissible between 15°C and 30°C (59°F to 86°F). It is essential to adhere to the expiration date indicated on the package to ensure product efficacy and safety.

Additional Clinical Information

The product is administered orally. Clinicians should advise patients to consult with their doctor or healthcare provider prior to using this product for heart-related conditions. No further information is available regarding laboratory tests, abuse potential, or postmarketing experiences.

Drug Information (PDF)

This file contains official product information for Aspirin, 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 Aspirin, 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.