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Acetaminophen/Caffeine

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Active ingredients
  • Acetaminophen 250–650 mg
  • Caffeine 6–75 mg
Reference brand
Tension Headache
Drug classes
Central Nervous System Stimulant, Methylxanthine
Dosage forms
  • Capsule
  • Capsule, Coated
  • Powder
  • Tablet
  • Tablet, Coated
  • Tablet, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
Marketed in the U.S.
Since 2007
Label revision date
January 29, 2026
Active ingredients
  • Acetaminophen 250–650 mg
  • Caffeine 6–75 mg
Reference brand
Tension Headache
Drug classes
Central Nervous System Stimulant, Methylxanthine
Dosage forms
  • Capsule
  • Capsule, Coated
  • Powder
  • Tablet
  • Tablet, Coated
  • Tablet, Film Coated
Route
Oral
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Marketed in the U.S.
Since 2007
Label revision date
January 29, 2026

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Drug Overview

Tension Headache Relief is a medication designed to temporarily relieve minor aches and pains associated with headaches and muscular aches. It typically contains active ingredients such as Acetaminophen, which is a common pain reliever, and Caffeine, which can enhance the effectiveness of pain relief. This combination works by targeting the discomfort caused by tension headaches and other minor pains, providing you with relief when you need it most.

Available in various forms, including tablets and caplets, Tension Headache Relief is aspirin-free, making it a suitable option for those who may be sensitive to aspirin. Whether you're dealing with a headache from stress or muscle tension, this medication aims to help you feel more comfortable and alleviate your pain effectively.

Uses

You can use this medication to temporarily relieve minor aches and pains caused by headaches and muscular aches. It is effective for various types of discomfort, including pain from the common cold, toothaches, backaches, and menstrual cramps.

This medication is suitable for adults and children aged 12 and older, but if you have a child under 12, it's best to consult a doctor before use. There are no known teratogenic effects (which could cause birth defects) associated with this medication, making it a safer option for those concerned about such risks.

Dosage and Administration

You should take this medication orally, with 2 caplets every 6 hours as needed. Make sure not to exceed 6 caplets in a 24-hour period. If you are an adult or a child aged 12 years and older, follow this dosage. For children under 12 years, it's important to consult a doctor before use. Always adhere to the recommended dosage to avoid any potential risks.

What to Avoid

You should avoid using this medication if you are allergic to acetaminophen or any of its ingredients. Additionally, do not take it in combination with any other products containing acetaminophen, whether prescription or nonprescription. If you are unsure whether a drug contains acetaminophen, please consult a doctor or pharmacist for guidance. Always keep this medication out of reach of children, and in case of accidental overdose, seek medical help immediately.

Side Effects

You should be aware of several important warnings and potential side effects when using products containing acetaminophen. Severe liver damage can occur if you take more than 6 caplets in 24 hours, use other medications containing acetaminophen, or consume 3 or more alcoholic drinks daily while using these products. Additionally, acetaminophen may cause severe skin reactions, including skin reddening, blisters, and rashes. If you experience any of these symptoms, stop using the product and seek medical help immediately.

Caffeine is also present in these products, and excessive intake may lead to nervousness, irritability, sleeplessness, and occasionally a rapid heartbeat. It's crucial to consult a doctor before use if you have liver disease or are taking blood thinners like warfarin. You should stop using the product and contact a doctor if new symptoms arise, if the painful area becomes red or swollen, if pain lasts more than 10 days, or if fever persists for more than 3 days, as these could indicate a serious condition.

Warnings and Precautions

  • This product contains acetaminophen, which can cause severe liver damage if you take more than 6 caplets in 24 hours, use it with other medications containing acetaminophen, or consume 3 or more alcoholic drinks daily while using it. If you have liver disease, consult a doctor before use.

  • Be aware of potential severe skin reactions, such as skin reddening, blisters, or rash. If you experience any of these symptoms, stop using the product and seek medical help immediately.

  • The recommended dose contains about as much caffeine as a cup of coffee. Limit the intake of other caffeine-containing products, as excessive caffeine can lead to nervousness, irritability, sleeplessness, and rapid heartbeat.

  • Stop using the product and call your doctor if you notice any new symptoms, if the painful area becomes red or swollen, if pain lasts more than 10 days, or if fever persists for more than 3 days. These could indicate a serious condition.

  • In case of overdose, seek emergency medical help or contact a Poison Control Center right away (1-800-222-1222). Quick medical attention is crucial for both adults and children, even if no symptoms are present.

Overdose

In case of an overdose of any pain relief medication, it is crucial to seek medical help immediately or contact a Poison Control Center at 1-800-222-1222. Quick medical attention is essential for both adults and children, even if you do not notice any signs or symptoms.

Signs of overdose may include increased sweating, nausea, vomiting, stomach pain, and loss of appetite. Taking more than the recommended dose can lead to severe liver damage, especially if you consume alcohol or take other medications containing acetaminophen. Always adhere to the recommended dosage to avoid serious health risks.

Pregnancy Use

If you are pregnant or breastfeeding, it is important to consult a healthcare professional before using any medication, including over-the-counter pain relievers. This precaution helps ensure the safety of both you and your baby, as some medications may pose risks during pregnancy or lactation.

Always seek guidance from a healthcare provider to discuss the potential benefits and risks associated with specific medications, as they can provide personalized advice based on your health needs.

Lactation Use

If you are pregnant or breastfeeding, it is important to consult a healthcare professional before using any medication. This is to ensure that any substances you take do not adversely affect your health or your baby's health. Medications can pass into breast milk, which means they may be ingested by your infant. Always prioritize safety and seek guidance tailored to your specific situation.

Pediatric Use

For children under 12 years, it is important to ask a doctor before using any of these medications. For those aged 12 and older, the recommended dosage is 2 caplets or tablets every 6 hours, with a maximum of 6 caplets or tablets in a 24-hour period.

Always keep these medications out of reach of children. In case of an overdose, seek medical help immediately or contact a Poison Control Center (1-800-222-1222), as prompt medical attention is crucial for both children and adults, even if no symptoms are apparent.

Geriatric Use

If you are an older adult or a caregiver, it's important to be cautious when using medications for tension headaches or back pain. Always consult with a doctor before using these medications, especially if you have liver disease or are taking blood thinners like warfarin, as these can increase the risk of complications.

While some products do not provide specific guidelines for elderly patients, it's essential to prioritize safety. If you notice any unusual symptoms or if your condition worsens, seek medical attention promptly, even if there are no obvious signs of trouble. Always follow your healthcare provider's advice regarding dosage and usage.

Renal Impairment

When considering medications for headache relief, it's important to be aware of how kidney health can affect your treatment. Most of the products reviewed do not provide specific guidance on dosage adjustments or monitoring for individuals with kidney issues. However, one product indicates that if you have renal impairment, you may need a reduced dose, and regular monitoring of kidney function, including creatinine clearance, is recommended.

If you have serious kidney problems, it's always best to consult with your doctor or pharmacist before starting any new medication to ensure it's safe for you.

Hepatic Impairment

If you are considering using products that contain acetaminophen, it's important to be aware of potential risks, especially if you have liver disease. You should always consult a doctor before using these products if you have any liver issues. Severe liver damage can occur if you exceed the maximum daily dose of 6 caplets (or 4,000 mg) in 24 hours, take them with other medications containing acetaminophen, or consume 3 or more alcoholic drinks daily while using these products.

To ensure your safety, please adhere to the following guidelines:

  • Maximum Daily Dose: Do not exceed 6 caplets (or 4,000 mg) in 24 hours.

  • Alcohol Consumption: Limit alcohol intake to fewer than 3 drinks per day.

  • Consultation: Always ask a doctor before use if you have liver disease or are taking other medications.

Drug Interactions

When using medications like acetaminophen, it's important to talk to your doctor or pharmacist, especially if you're taking warfarin, a blood-thinning drug. Acetaminophen can affect how warfarin works, potentially increasing the risk of bleeding. If you take both, your INR levels (a measure of blood clotting) should be monitored closely. Additionally, be cautious about consuming alcohol—taking acetaminophen with three or more alcoholic drinks daily can significantly raise the risk of severe liver damage.

Also, limit caffeine intake from other sources while using these products to avoid increased nervousness, irritability, and sleeplessness. Always consult with a healthcare provider about your medications to ensure safe and effective use.

Storage and Handling

To ensure the effectiveness of your tension headache relief tablets, store them at room temperature between 20°C and 25°C (68°F and 77°F). It's acceptable for the temperature to fluctuate between 15°C and 30°C (59°F and 86°F) occasionally. Always keep the cap tightly closed after use to maintain freshness, and check the expiration date on the package before using the product.

If the packaging is damaged or the seal is broken, do not use the tablets. For safety, keep them out of reach of children and read all product information carefully before use. Dispose of any unused tablets responsibly, following local guidelines for medication disposal.

Uses and Indications

This drug is indicated for the temporary relief of minor aches and pains due to:

  • Headache

  • Muscular aches

  • Toothache

  • Backache

  • Minor pain from arthritis

  • Premenstrual and menstrual cramps

  • Pain associated with the common cold

  • Inflammation

  • General pain from conditions such as rheumatism and arthritis

Limitations of Use No teratogenic or nonteratogenic effects are mentioned for this drug.

Dosage and Administration

Adults and children 12 years and older are instructed to take 2 caplets every 6 hours, with a maximum of 6 caplets in a 24-hour period. For those who may require it, certain formulations allow for up to 8 caplets in 24 hours, but this should only be done under the guidance of a healthcare professional.

Children under 12 years of age should not use these products without consulting a doctor.

All formulations are intended for oral administration, and it is recommended to take the caplets with a full glass of water. In the case of powder formulations, the powder should be placed on the tongue and swallowed with or without water, repeating every 4-6 hours as needed, while also adhering to the 6 pouches maximum in 24 hours.

It is essential to adhere strictly to the recommended dosages and not exceed the stated limits to avoid potential overdose.

Contraindications

Do not use if allergic to acetaminophen or any of the inactive ingredients. Use is contraindicated with any other drug containing acetaminophen, whether prescription or nonprescription. If there is uncertainty regarding the presence of acetaminophen in other medications, consultation with a doctor or pharmacist is advised. Additionally, do not use in children under 12 years of age.

Warnings and Precautions

Allergy Alert Acetaminophen may cause severe skin reactions. Symptoms may include skin reddening, blisters, and rash. If a skin reaction occurs, stop use and seek medical help right away.

Liver Warning This product contains acetaminophen. Severe liver damage may occur if you take:

  • More than 6 caplets in 24 hours, which is the maximum daily amount.

  • With other drugs containing acetaminophen.

  • 3 or more alcoholic drinks every day while using this product.

Caffeine Warning The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods, or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally, rapid heartbeat.

Do Not Use

  • If you are allergic to acetaminophen.

  • With any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist.

  • For more than 10 days for pain unless directed by a doctor.

  • For more than 3 days for fever unless directed by a doctor.

General Precautions

  • Ask a doctor before use if you have liver disease.

  • Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin.

Get Emergency Medical Help In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away. Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms.

Stop Taking and Call Your Doctor Stop use and ask a doctor if:

  • Any new symptoms occur.

  • Painful area is red or swollen.

  • Pain gets worse or lasts for more than 10 days.

  • Fever gets worse or lasts for more than 3 days. These could be signs of a serious condition.

Side Effects

Severe liver damage may occur if patients take more than 6 caplets in 24 hours, which is the maximum daily amount, or if they consume 3 or more alcoholic drinks daily while using this product. Additionally, taking this product with other drugs containing acetaminophen increases the risk of liver damage.

Patients should be aware of the potential for severe skin reactions associated with acetaminophen, which may manifest as skin reddening, blisters, or rash. If any of these symptoms occur, patients should stop use and seek medical help immediately.

Caffeine, present in the recommended dose of this product, may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat. Patients are advised to limit the use of caffeine-containing medications, foods, or beverages while taking this product.

Patients should not use this product if they are allergic to acetaminophen or if they are taking any other drug containing acetaminophen, whether prescription or nonprescription. It is important to consult a doctor before use if patients have liver disease or are taking the blood-thinning drug warfarin.

Patients should stop use and consult a doctor if any new symptoms occur, if the painful area is red or swollen, if pain worsens or lasts for more than 10 days, or if fever worsens or lasts for more than 3 days, as these could be signs of a serious condition.

In case of overdose, patients should seek medical help or contact a Poison Control Center immediately, as prompt medical attention is critical for both adults and children, even if no signs or symptoms are noticed.

Drug Interactions

Acetaminophen, a common analgesic, has several important interactions that should be considered, particularly with anticoagulants and alcohol.

Pharmacokinetic Interactions

  • Warfarin: Acetaminophen may alter the effects of warfarin, a blood-thinning medication. It can increase the risk of bleeding by enhancing warfarin's anticoagulant effects. Therefore, it is crucial to monitor International Normalized Ratio (INR) levels closely when these medications are used together. Patients are advised to consult a healthcare professional before using acetaminophen if they are on warfarin therapy.

Pharmacodynamic Interactions

  • Alcohol: The concurrent use of acetaminophen with three or more alcoholic drinks daily may significantly increase the risk of severe liver damage. Caution is advised to avoid this combination.

  • Caffeine: While not a direct interaction, it is recommended to limit caffeine intake from other medications, foods, or beverages while using acetaminophen. Excessive caffeine can lead to increased nervousness, irritability, and sleeplessness.

General Recommendations

Patients should always seek advice from a healthcare provider or pharmacist before starting acetaminophen, especially if they are taking other medications such as warfarin or consuming alcohol regularly. Monitoring and adjustments may be necessary to ensure safety and efficacy.

Pediatric Use

Children under 12 years of age should consult a doctor before use of any of the medications listed. For adults and children aged 12 years and older, the recommended dosage is 2 caplets or tablets every 6 hours, with a maximum of 6 caplets or tablets in a 24-hour period.

In the event of an overdose, it is critical to seek prompt medical attention for both adults and children, even if no signs or symptoms are immediately apparent. Additionally, all medications should be kept out of reach of children to prevent accidental ingestion.

Geriatric Use

Elderly patients may require special consideration when using medications for tension headache relief and related conditions. It is advised that geriatric patients consult a healthcare professional before use, particularly if they have liver disease or are taking anticoagulants such as warfarin.

Currently, there is no specific information regarding dosage adjustments, safety concerns, or special precautions for elderly patients provided in the drug inserts for several products, including Tension Headache and Doloneuro-Tropas. Therefore, healthcare providers should exercise caution and monitor elderly patients closely for any adverse effects or complications.

Given the lack of specific geriatric data, it is essential for healthcare professionals to evaluate the overall health status and medication regimen of elderly patients before prescribing these medications. Quick medical attention is critical for all adults, including geriatric patients, even if no signs or symptoms are initially apparent.

Pregnancy

Pregnant patients should consult a healthcare professional before using any of the following medications: Cafizetamol Forte, Migrafein Forte, Neo-Lubrina Fuerte, Tension Headache Relief, Notts - Tension Headache, Mejoral, Excedrin, Dolodent Toothache, Backaid, Kortribion Pain Reliever, Doloneuro-Tropas, Drx Choice, and Aerotab Pain Reliever. This recommendation applies to all forms, including tablets, film-coated tablets, capsules, and powders.

The available data does not specify any risk categories or detailed fetal impacts associated with these medications. However, the general precaution is to seek professional advice prior to use during pregnancy or breastfeeding to ensure the safety of both the patient and the fetus.

Lactation

Lactating mothers are advised to consult a healthcare professional before using any of the products listed, including those indicated for tension headache relief and back pain. The safety of these medications during breastfeeding has not been established, and potential excretion into breast milk is not specified.

Breastfed infants may be at risk if the lactating mother takes these medications, as the effects on infants are not well-documented. Therefore, it is crucial for healthcare providers to evaluate the benefits and risks of treatment options for lactating mothers on a case-by-case basis.

Renal Impairment

Patients with renal impairment may require careful consideration when using certain medications. While many drug inserts do not provide specific information regarding dosage adjustments or monitoring for patients with kidney problems, one label indicates that renal impairment may necessitate a reduced dose of the medication.

For patients with compromised kidney function, it is advised to monitor creatinine clearance regularly. Additionally, renal function tests should be conducted to ensure the safety and efficacy of the treatment. Special monitoring is particularly important for patients with severe renal impairment to avoid potential adverse effects.

In the absence of detailed guidance from other labels, healthcare providers should exercise caution and consider individual patient circumstances when prescribing these medications to patients with renal impairment.

Hepatic Impairment

Patients with hepatic impairment should exercise caution when using products containing acetaminophen. It is essential to consult a healthcare professional before use if there is a history of liver disease.

Severe liver damage may occur if patients exceed the following limits:

  • More than 6 caplets in 24 hours, which is the maximum daily amount for most formulations.

  • Concurrent use with other medications containing acetaminophen.

  • Consumption of 3 or more alcoholic drinks daily while using these products.

In some formulations, the maximum daily dose may vary, with some allowing up to 8 tablets in 24 hours. Therefore, it is critical for patients to adhere to the specific dosage recommendations provided for each product.

Monitoring for signs of liver damage is advised, especially in patients with existing liver conditions. In case of overdose, immediate medical attention is necessary, as prompt intervention is crucial for both adults and children, even in the absence of symptoms.

Overdosage

In the event of an overdose, immediate medical assistance should be sought by contacting a Poison Control Center or a healthcare professional. The national Poison Control Center can be reached at 1-800-222-1222. Quick medical attention is critical for both adults and children, even if no signs or symptoms are immediately apparent.

Symptoms of overdose may include increased sweating, nausea, vomiting, stomach pain, and loss of appetite. It is important to note that taking more than the recommended dosage can lead to severe liver damage. Specifically, severe liver damage may occur if more than 6 to 8 tablets are taken within a 24-hour period, if the product is used in conjunction with other medications containing acetaminophen, or if the individual consumes three or more alcoholic drinks daily while using the product.

Prompt intervention is essential, and individuals should not wait for symptoms to develop before seeking help. Monitoring for any adverse effects is advised, and healthcare providers may initiate appropriate treatment based on the severity of the overdose and the specific product involved.

Nonclinical Toxicology

Teratogenic Effects

For several products, including Backaid and Doloneuro-Tropas, it is advised that individuals who are pregnant or breastfeeding consult a health professional prior to use. No specific teratogenic effects have been detailed for other products in this review.

Non-Teratogenic Effects

No specific non-teratogenic effects have been mentioned across the reviewed labels.

Nonclinical Toxicology

There are no specific nonclinical toxicology details provided for any of the products reviewed.

Animal Pharmacology and Toxicology

No specific animal pharmacology and toxicology information has been disclosed for the products included in this review.

Storage and Handling

Tension Headache Pain Relieving Aid is supplied in tablet form. It should be stored at 25°C (77°F), with permissible excursions between 15°-30°C (59°-86°F). The product must be used by the expiration date indicated on the package.

Tension Headache Relief is also available as a tablet. It should be stored at 20°-25°C (68°-77°F) and kept tightly closed after use. Users are advised to read all product information before using and to retain the box for important information.

Notts - Tension Headache tablets should be stored between 20-25°C (68-77°F). The packaging is tamper-evident; do not use if the carton is open or if the foil inner seal is broken or missing.

For Tension Headache tablets, including film-coated variants, storage should be at 25°C (77°F) with excursions allowed between 15°-30°C (59°-86°F). The expiration date and lot number can be found on the end flap of the packaging.

Dolodent Toothache tablets are to be stored between 20-25°C (68-77°F).

Backaid tablets, also in film-coated form, should be stored at room temperature, protected from light, and kept out of reach of children. The product should not be used if the seal appears broken or if the contents do not match the product description. Discard after opening. Each caplet is sealed in a clear plastic blister with a paper/foil backing or in a bottle with a safety seal under the cap.

Doloneuro-Tropas tablets, which are film-coated, should be stored at a controlled room temperature of 20°-25°C (68°-77°F). The packaging is tamper-evident; do not use if the imprinted safety seal under the cap is broken or missing.

Acetaminophen 500mg Caffeine 65mg tablets should be stored at room temperature between 20-25°C (68-77°F).

For all Tension Headache Relief tablets, storage should be maintained at 20°-25°C (68°-77°F), with the cap tightly closed after use. Users should read all product information before using and keep the box for important information.

Pain Reliever Plus tablets are to be stored at 20-25°C (68-77°F).

Tension Headache Relief tablets, including coated variants, should be stored at 25°C (77°F) with excursions permitted between 15°-30°C (59°-86°F). High humidity should be avoided, and the expiration date and lot number can be found on the end flap of the packaging.

Lastly, Aerotab Pain Reliever tablets should be stored at 20-25°C (68-77°F) and should not be used if the pouch is torn or open.

Product Labels

The table below lists all over-the-counter labels containing acetaminophen and caffeine. Use it to compare dosage forms, strengths, and uses across products.

FDA-Approved Acetaminophen, caffeine Labels (Originator & Generics) showing branded and generic formulations with forms, routes, strengths, and FDA approval years.
More Details
Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It consolidates data from 42 FDA Structured Product Labels (DailyMed) for Acetaminophen, Caffeine (marketed as Tension Headache Pain Relieving Aid, Cafizetamol Forte, Migrafein Forte), with data retrieved by a validated AI data-extraction workflow. This includes 42 distinct product formulations. All FDA-listed dosage forms and strengths are aggregated in the sections above. Regulatory status appears in the Summary Information panel and was verified in the FDA National Drug Code directory. Detailed product-specific information is available via the individual label pages linked above. No human clinician has reviewed this version.

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Primary FDA sources:

Orange Book data shown on this page are limited to Regulatory Status (Rx), Established Pharmacologic Class (EPC), and Mechanism of Action (MoA).

Regulatory data notice: Information on this page is reproduced verbatim from FDA public databases (NSDE, Orange Book, Purple Book, DailyMed SPL). NDA/ANDA drugs are FDA-approved, BLA biologics are FDA-licensed. Inclusion alone does not guarantee current market availability or imply FDA endorsement.

Medical disclaimer: This AI-generated content is provided for educational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional for diagnosis or treatment decisions.