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Acetaminophen

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Active ingredient
Acetaminophen 500 mg
Other brand names
Dosage form
Tablet, Coated
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2022
Label revision date
December 2, 2025
Active ingredient
Acetaminophen 500 mg
Other brand names
Dosage form
Tablet, Coated
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 2, 2025
Manufacturer
COSTCO WHOLESALE CORPORATION
Registration number
M013
NDC root
63981-019

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Drug Overview

KIRKLAND Signature Extra Strength Acetaminophen is a pain reliever and fever reducer available in 500 mg gelcaps. It is designed to temporarily relieve minor aches and pains caused by various conditions, including backaches, headaches, toothaches, muscular aches, and menstrual cramps. Additionally, it helps to reduce fever, making it a versatile option for managing discomfort and illness.

This medication works by targeting the areas of the body that signal pain and fever, providing you with relief when you need it most. Always ensure that the safety seal is intact before use to guarantee the product's integrity.

Uses

You can use this medication to temporarily relieve minor aches and pains caused by various conditions, including backaches, headaches, toothaches, muscular aches, and even minor arthritis pain. It can also help ease the discomfort of premenstrual and menstrual cramps, as well as provide relief from the common cold.

In addition to pain relief, this medication is effective in temporarily reducing fever. It's important to remember that while it can help with these symptoms, it does not address the underlying causes of your discomfort.

Dosage and Administration

When using this medication, it's important to follow the instructions carefully. For adults and children aged 12 years and older, you should take 2 gelcaps by mouth every 6 hours as long as you have symptoms. However, make sure not to exceed 6 gelcaps in a 24-hour period unless your doctor advises otherwise. Additionally, you should not use this medication for more than 10 days unless directed by a healthcare professional.

If you are considering this medication for a child under 12 years old, it's essential to consult a doctor first to ensure it's safe and appropriate for them. Always remember to take the medication exactly as directed to avoid any potential issues.

What to Avoid

It's important to be cautious when using this medication. You should not use it in combination with any other drug that contains acetaminophen (a common pain reliever found in many over-the-counter and prescription medications). If you're unsure whether a medication contains acetaminophen, please consult your doctor or pharmacist for guidance.

Additionally, be aware that this medication is classified as a controlled substance, which means it has the potential for abuse or misuse. This can lead to dependence (a condition where your body becomes reliant on a substance). Always follow your healthcare provider's instructions and avoid using this medication in ways not prescribed.

Side Effects

You should be aware that this product contains acetaminophen, which can lead to severe liver damage if you exceed 4,000 mg in a 24-hour period, take it with other medications containing acetaminophen, or consume three or more alcoholic drinks daily while using it. Additionally, acetaminophen may cause serious skin reactions, including symptoms like skin reddening, blisters, or rash. If you experience any of these skin reactions, stop using the product and seek medical help immediately.

It's important to stop using this product and consult a doctor if your pain worsens or lasts more than 10 days, if you notice redness or swelling, if your fever worsens or lasts more than three days, or if you develop any new symptoms. You should also talk to a doctor before using this product if you have liver disease or are taking the blood-thinning medication warfarin.

Warnings and Precautions

This product contains acetaminophen, which can lead to severe liver damage if you take more than 4,000 mg in a 24-hour period, use it with other medications containing acetaminophen, or consume three or more alcoholic drinks daily while using it. Be aware that acetaminophen may also cause serious skin reactions, such as redness, blisters, or rashes. If you experience any skin reactions, stop using the product and seek medical help immediately.

Before using this product, consult your doctor if you have liver disease or are taking the blood thinner warfarin. If you suspect an overdose, get emergency medical help or contact a Poison Control Center right away, even if you don’t notice any symptoms. Additionally, stop using the product and call your doctor if your pain worsens or lasts more than 10 days, if you notice redness or swelling, if your fever worsens or lasts more than three days, or if any new symptoms appear.

Overdose

If you suspect an overdose, it’s important to seek medical help immediately or contact a Poison Control Center. This is crucial for both adults and children, even if you don’t see any signs or symptoms of an overdose.

Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing. Remember, acting quickly can make a significant difference, so don’t hesitate to reach out for help. Your safety and well-being are the top priority.

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 using this medication for your child, it's important to consult a doctor first if your child is under 12 years old. For children aged 12 and older, the recommended dosage is 2 gelcaps every 6 hours as needed, but they should not exceed 6 gelcaps in a 24-hour period unless a doctor advises otherwise. Additionally, it’s crucial not to use this medication for more than 10 days without a doctor's guidance.

In the event of an overdose, seek medical help immediately or contact a Poison Control Center. Quick medical attention is essential for both adults and children, even if there are no immediate signs or symptoms of overdose.

Geriatric Use

While there is no specific information available about the use of this medication in older adults, it’s important to approach any new treatment with caution. As you age, your body may process medications differently, and factors like kidney function (renal impairment) and changes in cognition can affect how well a drug works or how safe it is for you.

If you or a loved one is considering this medication, it’s wise to discuss it with a healthcare provider. They can help determine the best approach, taking into account any unique health needs or concerns that may arise with age. Always prioritize open communication with your doctor to ensure safe and effective treatment.

Renal Impairment

If you have kidney problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or safety considerations for your condition. This means that there are no tailored guidelines for how this medication should be used if you have renal impairment (kidney issues).

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your health situation. They can help determine the best course of action based on your kidney function and overall health.

Hepatic Impairment

If you have liver problems, it's important to be cautious when using products that contain acetaminophen. Taking more than 4,000 mg of acetaminophen in a 24-hour period, using it alongside other medications that also contain acetaminophen, or consuming three or more alcoholic drinks daily while using this product can lead to severe liver damage.

Before using this product, please consult your doctor if you have liver disease. They can provide guidance on safe usage and any necessary adjustments to your dosage. Your health and safety are the top priority, so don’t hesitate to seek professional advice.

Drug Interactions

It's important to be aware that taking acetaminophen (a common pain reliever) alongside warfarin (a blood thinner) can increase the effects of warfarin, which may raise your risk of bleeding. If you are using both medications, your healthcare provider may want to monitor your INR (a blood test that measures how long it takes your blood to clot) more closely to ensure your safety.

Always discuss any medications you are taking with your healthcare provider, including over-the-counter drugs like acetaminophen. This conversation is crucial to avoid potential interactions and to ensure that your treatment plan is safe and effective.

Storage and Handling

To ensure the best performance of your product, store it at a temperature of 25°C (77°F). It can safely be kept in a range between 15°C and 30°C (59°F to 86°F), but try to avoid exposing it to high humidity, as this can affect its quality. Always check the expiration date on the package and make sure to use the product before that date to ensure its effectiveness.

By following these simple storage and handling guidelines, you can help maintain the product's integrity and safety for your use.

Additional Information

You should take this medication orally. If you are pregnant or breastfeeding, it's important to consult a healthcare professional before using it. In the event of an overdose, seek medical help immediately or contact a Poison Control Center. Quick medical attention is crucial for both adults and children, even if there are no noticeable signs or symptoms.

FAQ

What is KIRKLAND Signature Extra Strength Acetaminophen used for?

KIRKLAND Signature Extra Strength Acetaminophen is a pain reliever and fever reducer that temporarily relieves minor aches and pains due to backache, the common cold, muscular aches, headache, toothache, minor arthritis pain, and menstrual cramps.

What is the recommended dosage for adults and children over 12?

Adults and children 12 years and over should take 2 gelcaps every 6 hours while symptoms last, not exceeding 6 gelcaps in 24 hours, and not taking it for more than 10 days unless directed by a doctor.

Are there any warnings associated with this medication?

Yes, there is a liver warning: taking more than 4,000 mg of acetaminophen in 24 hours, using it with other acetaminophen-containing drugs, or consuming 3 or more alcoholic drinks daily while using this product may cause severe liver damage.

What should I do in case of an overdose?

In case of overdose, get medical help or contact a Poison Control Center immediately, as prompt medical attention is critical for both adults and children.

Can I use this medication if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should ask a health professional before using KIRKLAND Signature Extra Strength Acetaminophen.

What should I do if I experience a skin reaction?

If you experience severe skin reactions such as reddening, blisters, or rash, stop using the product and seek medical help right away.

Is there a specific storage requirement for this medication?

Store KIRKLAND Signature Extra Strength Acetaminophen at 25°C (77°F), with permitted excursions between 15°-30°C (59°-86°F), and avoid high humidity.

What should I do if my symptoms do not improve?

Stop use and ask a doctor if pain worsens or lasts more than 10 days, if redness or swelling is present, if fever worsens or lasts more than 3 days, or if any new symptoms appear.

Packaging Info

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

Packaging configurations for Acetaminophen.
Details

Drug Information (PDF)

This file contains official product information for Acetaminophen, 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 backache, the common cold, muscular aches, headache, toothache, minor pain of arthritis, and premenstrual and menstrual cramps. Additionally, it is indicated for the temporary reduction of fever.

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

Dosage and Administration

Adults and children aged 12 years and older are instructed to take 2 gelcaps orally every 6 hours as needed while symptoms persist. It is imperative that they do not exceed a total of 6 gelcaps within a 24-hour period unless specifically directed by a healthcare professional. Additionally, the duration of use should not exceed 10 days unless advised by a doctor.

For children under 12 years of age, it is recommended to consult a healthcare professional before administration.

Contraindications

Use of this product is contraindicated in patients who are concurrently taking any other medication that contains acetaminophen, whether prescription or nonprescription. The combination may lead to an increased risk of acetaminophen-related hepatotoxicity. If there is uncertainty regarding the acetaminophen content of a medication, consultation with a healthcare professional is advised.

Warnings and Precautions

Severe liver damage may occur with the use of this product, which contains acetaminophen. Healthcare professionals should advise patients that the risk of liver injury increases significantly if they exceed 4,000 mg of acetaminophen within a 24-hour period, use other medications containing acetaminophen concurrently, or consume three or more alcoholic beverages daily while taking this product.

Acetaminophen may also provoke severe skin reactions, which can manifest as skin reddening, blisters, or rash. In the event of any skin reaction, patients must be instructed to discontinue use immediately and seek medical assistance.

It is essential for patients to consult a healthcare provider prior to using this product if they have a history of liver disease. Additionally, patients taking the anticoagulant warfarin should seek advice from a doctor or pharmacist before use, as potential interactions may occur.

In cases of overdose, immediate medical attention is crucial. Patients should be advised to contact a Poison Control Center or seek emergency medical help without delay, regardless of the presence of symptoms, as prompt intervention is vital for both adults and children.

Patients should also be instructed to stop taking the product and consult a healthcare professional if any of the following occur: pain worsens or persists for more than 10 days, redness or swelling develops, fever intensifies or lasts longer than 3 days, or any new symptoms arise.

Side Effects

Patients using this product should be aware of the potential for serious adverse reactions, particularly related to liver health and allergic responses.

Severe liver damage may occur if patients exceed 4,000 mg of acetaminophen within a 24-hour period, use this product in conjunction with other medications containing acetaminophen, or consume three or more alcoholic drinks daily while using this product.

Additionally, there is an allergy alert associated with acetaminophen, which may lead to severe skin reactions. Symptoms of such reactions can include skin reddening, blisters, and rash. If any of these symptoms occur, patients are advised to discontinue use immediately and seek medical assistance.

Patients should also be instructed to stop using the product and consult a healthcare professional if pain worsens or persists for more than 10 days, if redness or swelling is observed, if fever intensifies or lasts more than three days, or if any new symptoms arise.

It is recommended that patients with liver disease consult a doctor prior to using this product. Furthermore, individuals taking the blood-thinning medication warfarin should seek advice from a healthcare provider or pharmacist before use.

Drug Interactions

Acetaminophen has been observed to enhance the anticoagulant effects of warfarin, which may result in an elevated risk of bleeding. It is recommended that the International Normalized Ratio (INR) be monitored closely in patients who are receiving both acetaminophen and warfarin concurrently to ensure safe therapeutic levels and to mitigate the risk of adverse effects.

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

Packaging & NDC

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

Packaging configurations for Acetaminophen.
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 2 gelcaps every 6 hours as needed, with a maximum of 6 gelcaps in a 24-hour period, unless otherwise directed by a physician. Treatment should not exceed 10 days without medical advice.

In the event of an overdose, immediate medical assistance should be sought, or contact a Poison Control Center without delay. Prompt medical attention is essential for both adults and pediatric patients, even if no signs or symptoms are apparent.

Geriatric Use

Elderly patients may not have specific information regarding the use of this medication, including dosage adjustments, safety concerns, or special precautions. Therefore, healthcare providers should exercise caution when prescribing this medication to geriatric patients. It is advisable to monitor these patients closely for any potential adverse effects or changes in therapeutic response, given the lack of targeted data for this population.

Pregnancy

Pregnant patients and those who are breastfeeding should consult a healthcare professional prior to using this medication. The potential risks and benefits must be carefully considered in these populations to ensure the safety of both the mother and the fetus or infant.

Lactation

Lactating mothers are advised to consult a health professional prior to using this medication. There is currently no available data regarding the excretion of this medication in human breast milk or its effects on breastfed infants. Therefore, caution is recommended when administering this medication to lactating individuals.

Renal Impairment

Patients with renal impairment have not been specifically addressed in the drug insert regarding dosage adjustments, special monitoring, or safety considerations. Therefore, healthcare professionals should exercise caution when prescribing this medication to individuals with reduced kidney function, as the absence of detailed guidance necessitates careful clinical judgment. Regular monitoring of renal function may be advisable in these patients to ensure safety and efficacy.

Hepatic Impairment

Patients with hepatic impairment should exercise caution when using this product, as it contains acetaminophen, which is associated with the risk of severe liver damage. It is critical that patients do not exceed a maximum dosage of 4,000 mg of acetaminophen within a 24-hour period. Additionally, patients should avoid concurrent use with other medications that contain acetaminophen, as this may further increase the risk of liver injury.

Patients with compromised liver function are advised to consult a healthcare professional prior to using this product, particularly if they have a history of liver disease. Furthermore, consumption of three or more alcoholic drinks per day while using this product is contraindicated, as it may exacerbate the risk of liver damage. Regular monitoring of liver function may be warranted in patients with existing liver conditions to ensure safety and efficacy during treatment.

Overdosage

In the event of an overdose, it is imperative to seek immediate medical assistance or contact a Poison Control Center without delay. Prompt medical intervention is crucial for both adults and children, even in the absence of observable signs or symptoms.

Healthcare professionals should be aware that the lack of immediate symptoms does not preclude the potential for serious health consequences. Therefore, it is essential to monitor the patient closely and provide appropriate care as needed.

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 that acetaminophen may be associated with severe skin reactions. Reports indicate that symptoms can include skin reddening, blisters, and rash. In the event of a skin reaction, it is advised to discontinue use immediately and seek medical assistance.

Patient Counseling

Healthcare providers should advise patients to seek immediate medical assistance or contact a Poison Control Center in the event of an overdose, emphasizing that prompt medical attention is crucial for both adults and children, even if no signs or symptoms are apparent.

Patients should be informed not to use this medication in conjunction with any other drug that contains acetaminophen, whether prescription or nonprescription. If patients are uncertain about the presence of acetaminophen in their medications, they should be encouraged to consult with a doctor or pharmacist for clarification.

Healthcare providers should instruct patients to discontinue use and consult a doctor if their pain worsens or persists for more than 10 days. Additionally, patients should be advised to stop using the medication and seek medical advice if they experience any redness or swelling, if their fever worsens or lasts more than 3 days, or if any new symptoms arise.

It is important for healthcare providers to recommend that patients consult a doctor before using this medication if they have a history of liver disease. Furthermore, patients taking the blood-thinning medication warfarin should be advised to speak with a doctor or pharmacist prior to use to ensure safety and avoid potential interactions.

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), with permissible excursions between 15°C and 30°C (59°F and 86°F). It is essential to adhere to the expiration date indicated on the package. Additionally, the product must be kept in an environment that avoids high humidity to maintain its integrity and effectiveness.

Additional Clinical Information

The medication is administered orally. Clinicians should advise patients who are pregnant or breastfeeding to consult a healthcare professional prior to use. In the event of an overdose, it is crucial for patients to seek medical assistance or contact a Poison Control Center immediately, as prompt attention is essential for both adults and children, even in the absence of noticeable symptoms.

Drug Information (PDF)

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