ADD CONDITION

items per page

Aspirin

Last content change checked dailysee data sync status

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 2006
Label revision date
November 5, 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 2006
Label revision date
November 5, 2025
Manufacturer
United Natural Foods, Inc. dba UNFI
Registration number
M013
NDC root
41163-157

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

Aspirin 325 mg is a nonsteroidal anti-inflammatory drug (NSAID) that serves as a pain reliever and fever reducer. It is commonly used to temporarily alleviate minor pain associated with various conditions, including arthritis, headaches, muscle aches, menstrual cramps, toothaches, and the discomfort and fever that can accompany colds.

By blocking certain chemicals in the body that cause inflammation and pain, aspirin helps you feel more comfortable during these times. Whether you're dealing with a headache or muscle soreness, this medication can provide relief to help you get through your day.

Uses

You can use this medication to temporarily relieve various types of minor pain. This includes discomfort from arthritis, headaches, muscle pain, menstrual cramps, toothaches, and even pain and fever associated with colds.

It's important to note that there are no reported teratogenic effects (which means it doesn't cause birth defects) or nonteratogenic effects associated with this medication. Always consult with a healthcare professional if you have any questions or concerns about using this medication.

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, if you have ever experienced an allergic reaction to this product or any of its ingredients, it is important not to take it. These precautions are crucial to ensure your safety and well-being. Always consult with a healthcare professional if you have any concerns about allergies or reactions to medications.

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 faintness, bloody or black stools, vomiting blood, 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. Always seek medical advice if you notice any of these serious conditions.

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, shock, hives, 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 consume alcohol regularly.

Before using this product, consult your doctor if you are taking diuretics, have high blood pressure, heart disease, liver cirrhosis, kidney disease, or asthma. It's also wise to check with a healthcare professional if you are on medications for gout, diabetes, or arthritis. If you experience any signs of an allergic reaction, stomach bleeding (such as faintness, bloody or black stools, or vomiting blood), or if your pain or fever worsens or lasts longer than expected, stop using the product and contact your doctor immediately. In case of an overdose, seek emergency medical help or contact a Poison Control Center 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 what you would typically experience with the medication.

Always err on the side of caution—if you notice anything concerning, don’t hesitate to reach out for assistance. Your health and safety are the top priority.

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. 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 the health of your baby 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 associated with medications. If you are 60 years or older, there is an increased risk of severe stomach bleeding when taking certain drugs. This means that you should be particularly cautious and discuss any concerns with your healthcare provider, especially if you have a history of stomach issues or are taking other medications that may increase this risk.

Always ensure that your doctor is aware of your age and any other health conditions you may have, as they can help tailor your treatment plan to keep you safe. Taking these precautions can help you manage your health more effectively as you age.

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 adjust the dosage or monitor your condition closely to ensure your safety. Always prioritize open communication with your doctor regarding your health status.

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 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, specifically at 25ºC (77ºF). It’s acceptable for the temperature to vary between 15ºC and 30ºC (59ºF to 86ºF) 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 in a clean environment to maintain its integrity. Following these guidelines will help you use the product safely and effectively.

Additional Information

You can take this medication orally. For adults and children 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 your doctor advises otherwise. If your child is under 12 years old, do not use this medication unless directed by a doctor.

If you are pregnant or breastfeeding, it's important to consult a healthcare professional before using this medication. Specifically, avoid using aspirin after 20 weeks of pregnancy unless your doctor has specifically instructed you to do so, as it may pose risks to your unborn child or lead to complications during delivery.

FAQ

What is aspirin 325 mg used for?

Aspirin 325 mg is a pain reliever and fever reducer that temporarily relieves minor pain from arthritis, headaches, muscle pain, menstrual pain, toothaches, and pain and fever from colds.

What should I do if I am allergic to aspirin?

Do not use aspirin if you are allergic to it or any other pain reliever/fever reducer, as it may cause a severe allergic reaction.

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 are the warnings associated with aspirin?

Aspirin may cause severe allergic reactions, stomach bleeding, and should not be used by children recovering from chicken pox or flu-like symptoms due to the risk of Reye's syndrome.

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

If you experience signs of stomach bleeding, such as feeling faint, having bloody or black stools, or vomiting blood, stop using aspirin and seek medical help immediately.

Is it safe to use aspirin during pregnancy?

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

How should I store aspirin?

Store aspirin at 25ºC (77ºF), with permitted excursions between 15º-30ºC (59º-86ºF), and use it by the expiration date on the package.

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 minor pain associated with various conditions, including arthritis, headache, muscle pain, menstrual pain, toothache, and pain and fever associated with colds.

There are no teratogenic or nonteratogenic effects reported for 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.

Patients are advised to consume a full glass of water with each dose to ensure proper administration and absorption of the medication.

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

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

Reye’s Syndrome Children and teenagers who are experiencing or recovering from chickenpox or flu-like symptoms should avoid using this product. If any changes in behavior accompanied by nausea and vomiting occur during use, it is imperative to consult a healthcare professional, as these symptoms may indicate the onset of Reye's syndrome, a rare but serious condition.

Allergy Alert Aspirin may provoke severe allergic reactions, which can manifest as facial swelling, shock, hives, or asthma symptoms such as wheezing. Immediate medical attention should be sought if any of these symptoms occur.

Stomach Bleeding Warning 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 meet any of the following criteria:

  • Are aged 60 years or older

  • Have a history of stomach ulcers or bleeding disorders

  • Are concurrently using blood-thinning medications (anticoagulants) or steroid drugs

  • Are taking other medications that contain NSAIDs, including aspirin, ibuprofen, or naproxen

  • Consume three or more alcoholic beverages daily while using this product

  • Exceed the recommended dosage or duration of use.

General Precautions Prior to using this product, patients should consult a healthcare provider if they:

  • Are taking diuretics

  • Have a history of stomach issues, such as heartburn

  • Have high blood pressure, heart disease, liver cirrhosis, or kidney disease

  • Have asthma.

Additionally, it is advisable to seek guidance from a doctor or pharmacist if the patient is on prescription medications for gout, diabetes, or arthritis.

Emergency Medical Help In the event of an overdose, immediate medical assistance should be sought, or the Poison Control Center should be contacted without delay.

Discontinuation and Consultation Patients should discontinue use and contact a healthcare professional if any of the following occur:

  • Signs of an allergic reaction, which require urgent medical attention

  • Symptoms indicative of stomach bleeding, such as feeling faint, experiencing bloody or black stools, vomiting blood, or persistent stomach pain

  • Ringing in the ears or loss of hearing

  • Worsening pain that lasts more than 10 days

  • Fever that worsens or persists beyond three days

  • The emergence of new symptoms

  • Presence of redness or swelling.

These symptoms may signify a serious medical condition that necessitates prompt evaluation.

Side Effects

Patients using this product should be aware of several serious adverse reactions associated with its use. Notably, Reye’s syndrome is a rare but serious illness that can 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 may be early signs of Reye's syndrome.

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

This product contains a nonsteroidal anti-inflammatory drug (NSAID), which may lead to severe stomach bleeding. The risk of this adverse reaction is heightened 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, having bloody or black stools, vomiting blood, or experiencing persistent stomach pain. Other concerning symptoms that warrant medical attention 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 prompt evaluation.

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 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 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, it is essential to consult a doctor, 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. In contrast, for adults and children 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, may have an increased risk of severe stomach bleeding. It is essential for healthcare providers to exercise caution when prescribing this medication to geriatric patients.

Monitoring for signs of gastrointestinal bleeding is recommended, and dosage adjustments may be necessary based on the individual patient's health status and concurrent medications. Careful assessment of the risks versus benefits should be conducted to ensure the safety of elderly patients receiving this treatment.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to use. The use of aspirin is particularly cautioned against after 20 weeks of pregnancy unless explicitly directed by a physician, as it may pose risks to the developing fetus and lead to complications during delivery. Healthcare providers should carefully evaluate the potential benefits and risks when considering the use of this medication in pregnant patients.

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 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 its use during lactation.

Renal Impairment

Patients with renal impairment should consult a healthcare professional prior to use, particularly if they have 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 evaluation and monitoring of their liver function to ensure safe use of the medication. Adjustments to dosage may be necessary based on the severity of hepatic impairment, and ongoing assessment of liver function is recommended throughout the treatment period.

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 vigilant in monitoring for symptoms that may arise from an overdose. While specific symptoms are not detailed in the provided information, it is essential to assess the patient for any signs of toxicity or distress.

Management of an overdose should be guided by the severity of the symptoms and the clinical judgment of the healthcare provider. Supportive care and symptomatic treatment may be necessary, and the involvement of poison control experts can provide additional guidance on the appropriate management strategies.

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 details regarding nonclinical toxicology or animal pharmacology and toxicology provided in the text.

Postmarketing Experience

Postmarketing experience has revealed reports of serious adverse reactions associated with the use of aspirin. Notable among these are gastrointestinal bleeding, allergic reactions, and Reye's syndrome.

Gastrointestinal bleeding has been reported, particularly in patients with a history of ulcers or those concurrently using anticoagulants or other nonsteroidal anti-inflammatory drugs (NSAIDs). Additionally, allergic reactions, including cases of anaphylaxis, have been documented in the postmarketing setting.

Reye's syndrome has been reported in children and teenagers who have taken aspirin during viral infections, especially in those presenting with chickenpox or flu-like symptoms.

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 crucial 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, having bloody or black stools, vomiting blood, or experiencing stomach pain that does not improve. If any of these symptoms occur, patients should be advised to discontinue use and contact a healthcare professional.

Furthermore, patients should be informed to stop using the product 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 worsens or lasts more than 3 days, or if new symptoms arise. Redness or swelling should also prompt a consultation with a healthcare provider, as these may indicate a serious condition.

Patients should be encouraged to consult a doctor before using the product if they are taking a diuretic, if the warning regarding stomach bleeding applies to them, or if they have a history of stomach problems such as heartburn. Additionally, those with high blood pressure, heart disease, liver cirrhosis, or kidney disease should seek medical advice prior to use. Patients with asthma should also be advised to consult a doctor before using the product.

Lastly, patients should be instructed to speak with a doctor or pharmacist before using this product if they are taking prescription medications for gout, diabetes, or arthritis.

Storage and Handling

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

Additional Clinical Information

The medication is administered orally. For adults and children 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 physician. For children under 12 years, use is not recommended unless specifically directed by a healthcare provider.

Clinicians should counsel patients regarding the use of this medication during pregnancy or breastfeeding. It is particularly important to avoid aspirin use after 20 weeks of pregnancy unless explicitly instructed by a healthcare professional, as it may pose risks to the unborn child or lead to complications during delivery.

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.

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.