Maxifen

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Maxifen

What is Maxifen? An Identity and Classification Overview

Property Description
Active Ingredients Acetaminophen, Ibuprofen
Form Oral Solid Preparation (e.g., tablet, capsule)
Pharmacological Class Analgesic and Non-Steroidal Anti-Inflammatory Drug (NSAID) Combination
Common Use General management of acute pain, inflammation, and fever
Origin Synthetic Chemical Substances

What Type of Medicine is Maxifen?

Maxifen is defined as a specialized fixed-dose combination product containing two established, synthetic active agents. Pharmacologically, it is categorized as a dual-action Analgesic (pain reliever) and incorporates an ingredient from the widely researched Non-Steroidal Anti-Inflammatory Drug (NSAID) class. This combined approach is clinically recognized for its potential to provide enhanced symptom management over monotherapies.

This preparation is designed for oral administration as an oral solid preparation. Maxifen is one of the available brands utilizing the fixed-ratio blend of Acetaminophen and Ibuprofen, a co-formulation often used in non-prescription settings due to its demonstrated efficacy against symptoms like headache, muscle ache, or dental discomfort.

Maxifen Composition: Acetaminophen and Ibuprofen

The two primary active ingredients are Acetaminophen (Paracetamol) and Ibuprofen, both of which are synthetic chemical substances. Acetaminophen is a para-aminophenol derivative, while Ibuprofen is a propionic acid derivative. This fixed pairing is designed to create a therapeutic synergistic effect.

Acetaminophen exerts its primary effects centrally by influencing pain signaling and regulating temperature. Ibuprofen acts mainly at peripheral sites of injury or inflammation by reducing the production of localized inflammatory compounds. This dual mechanism—targeting pain centrally and inflammation peripherally—is the core differentiating factor of the Maxifen combination.

General Benefit and Purpose

The general therapeutic purpose of Maxifen is the enhanced and effective management of pain, inflammation, and fever. The formulation's dual-action mechanism allows it to provide a broader scope of symptomatic relief than single-component options. This multi-modal strategy offers a cohesive and robust approach for alleviating general physical discomfort, making it suitable for situations requiring both pain and mild anti-inflammatory relief.

Regulatory References

  1. NIH Reference

What side effects are possible with Maxifen?

Possible Side Effects and Safety Information

Maxifen (a combination of a Nonsteroidal Anti-Inflammatory Drug or NSAID and paracetamol) may cause side effects, though they are often mild and temporary. If any side effect persists or worsens, consult your healthcare provider.


Common Side Effects

Commonly reported side effects primarily involve the gastrointestinal system and may include:

  • Gastrointestinal: Nausea, vomiting, indigestion (dyspepsia), abdominal pain, heartburn, diarrhea, flatulence, and constipation.
  • Nervous System: Dizziness or drowsiness.

Serious Side Effects and Warnings

Stop taking Maxifen and seek immediate medical attention if you experience signs of a serious reaction or complication, such as:

  • Severe Allergic Reaction: Skin rash, hives, difficulty breathing, or swelling of the face, throat, or tongue.
  • Gastrointestinal Bleeding/Ulcers: Black or tarry stools, vomiting blood, or persistent stomach pain.
  • Liver Problems: Yellowing of the skin or eyes (jaundice), dark urine, loss of appetite, or persistent nausea and vomiting. The paracetamol component carries a risk of liver damage, especially with overdose or chronic use.
  • Cardiovascular Events: Chest pain, sudden weakness on one side of the body, or shortness of breath. NSAIDs, particularly with long-term or high-dose use, may increase the risk of serious cardiovascular events.
  • Kidney Problems: Reduced or painful urination, or swelling in the feet, ankles, or legs (edema).

Contraindications and Precautions

Maxifen is generally contraindicated (should not be used) in patients with known hypersensitivity or allergy to its components or other NSAIDs. Use with caution, and only as directed by a healthcare professional, if you have:

  • A history of peptic ulcers or gastrointestinal bleeding.
  • Severe heart failure, high blood pressure, or a recent heart surgery (e.g., coronary artery bypass graft).
  • Severe liver or kidney disease.
  • Asthma, especially if sensitive to painkillers.

Avoid consuming alcohol while taking Maxifen due to an increased risk of liver damage and gastrointestinal bleeding.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Maxifen, which contains Acetaminophen and Ibuprofen, is a serious medical event that requires immediate action as specified by government regulatory agencies. Symptoms of severe toxicity, particularly liver damage, may be significantly delayed, making prompt intervention critical even if initial symptoms are absent.

Officially Documented Overdose Manifestations

Symptoms officially documented in prescribing information often include non-specific signs initially, such as pallor, nausea, vomiting, and abdominal pain. As toxicity progresses, more severe manifestations may arise, including jaundice (yellowing of the skin and eyes), confusion, stupor, and reduced level of consciousness.

Severe Outcomes and Required Actions

The most severe outcome documented by regulators is Severe Liver Damage which can progress to Acute Hepatic Failure and death. Other serious documented complications include Acute Renal Failure and cardiac arrhythmias.

Immediate Medical Attention is Critical: Patients must seek immediate medical attention and contact a Poison Control Center right away following any suspected overdose. Due to the risk of delayed symptoms, prolonged hospital monitoring is often required. The official management plan includes procedural steps like Gastric Lavage and the administration of the antidote Acetylcysteine to mitigate the risk of severe toxicity.

Therapeutic Uses of Maxifen

What Maxifen Treats: Main Uses and Benefits

Maxifen is used to provide symptomatic relief by targeting key domains of discomfort, and is considered relevant in clinical settings marked by heightened symptoms and temporary functional strain. The combination is generally used to temporarily relieve minor aches and pains stemming from various sources.

The medication is commonly applied in scenarios where short-term symptomatic assistance is needed for common conditions, including headache, dental pain, muscular aches, menstrual cramps (primary dysmenorrhea), and minor pain of arthritis. This approach is often useful when symptoms intensify and supportive relief is needed.

“This formulation supports patients during difficult episodes by easing distress and contributing to improved day-to-day comfort.”

Management of Acute Pain and Inflammation

This combination is primarily applied in situations involving acute pain and associated localized inflammation. Maxifen generally offers supportive therapeutic benefit by helping to reduce the overall symptom burden, and contributes to easing distress during periods of heightened symptoms.

Quick Fact: Relief for Symptoms Related to Inflammation and Pain

This combination helps address symptom clusters that may become intense or disruptive, which helps address symptoms related to inflammatory or irritative states.

Regulatory References

  1. NIH DailyMed drug information

Eligibility and Restrictions for Use

Maxifen, a combination product of acetaminophen and ibuprofen, has specific eligibility rules mandated by regulatory authorities to ensure safe use, primarily based on patient age, underlying health conditions, and drug sensitivity.

Contraindicated Populations (Do Not Use)

Category Official Restriction Status
Allergy/Hypersensitivity Contraindicated in individuals with a known allergic reaction to acetaminophen, ibuprofen, aspirin, or any other NSAID.
Co-Medication Risk Contraindicated if currently taking any other product containing acetaminophen (risk of accidental overdose).
Heart Surgery Contraindicated for treating peri-operative pain associated with Coronary Artery Bypass Graft (CABG) surgery.
Severe Liver Disease Contraindicated in patients with severe active liver disease.

Age and Condition-Based Restrictions

Population Group Regulatory Eligibility Status
Children Under 12 Use not established; use requires a doctor's determination.
Pregnancy Avoid use at 20 weeks of gestation and later (risk of fetal harm from the NSAID component). Consultation with a health professional is required.
Older Adults (Age 60+) Conditional use; requires consulting a health professional due to the increased risk of severe gastrointestinal bleeding.
High-Risk Conditions Conditional use; patients with heart disease, high blood pressure, stroke history, kidney disease, liver disease, or a history of stomach ulcers/bleeding must consult a doctor before use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Maxifen, a combination of Ibuprofen and Acetaminophen, has an official regulatory profile defined by specific interaction constraints concerning both active components.

Interaction Type Interacting Substances/Restrictions
Contraindicated Combinations Co-administration is formally prohibited with all other products containing Acetaminophen and other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), including COX-2 inhibitors, due to additive risks of hepatotoxicity and gastrointestinal/renal complications.
Pharmacodynamic Risk The Ibuprofen component presents an enhanced risk of bleeding when co-administered with anticoagulants (e.g., Warfarin) and antiplatelet agents. It also diminishes the antihypertensive and diuretic effects of ACE Inhibitors, ARBs, and diuretics, increasing the risk of compromised renal function.
Exposure Modification Ibuprofen reduces the renal clearance of substances like Lithium and Methotrexate, leading to increased plasma concentrations (exposure) of those medicines. Separately, co-administration with CYP2C9 inhibitors (e.g., Fluconazole) may increase Ibuprofen exposure.

Timing-Based Rule: To avoid interference with the antiplatelet effect of low-dose Aspirin taken for cardioprotection, Maxifen (Ibuprofen component) must be administered at least 8 hours before or 30 minutes after the immediate-release Aspirin dose.

Substance Interaction: Consumption of alcohol is officially noted as increasing the risks associated with both components, specifically heightening the potential for gastrointestinal bleeding and severe liver injury.

Mechanism of Action

Maxifen’s action is defined by a complementary strategy that influences the biosynthesis of prostanoid mediators and modulates central signaling associated with thermal and nociceptive regulation.

Central Modulation of Nociception and Thermoregulation

This domain covers the Acetaminophen component, which acts primarily within the Central Nervous System (CNS) by modulating specific COX enzyme activity and activating TRPV1 and CB1 receptors in the spinal cord. This action modifies central nociceptive signal processing and resets the elevated hypothalamic temperature set-point, resulting in an alteration of pain perception and systemic thermoregulation.

Peripheral Inhibition of Prostanoid Mediators

This domain focuses on the Ibuprofen component's role as a non-selective inhibitor of the COX-1 and COX-2 enzymes in peripheral tissues, which are highly active at sites of injury. By blocking the conversion of Arachidonic Acid into prostanoids (PGE2), this mechanism suppresses the chemical messengers that sensitize local nerve endings and drive the vascular components of inflammation, resulting in altered nociceptor signaling and reduced vascular changes.

Mechanistic Synergy and Functional Complementarity

The pharmacological profile of Maxifen is characterized by combining these two distinct mechanisms: the central analgesic/antipyretic mechanistic potential of Acetaminophen with the peripheral anti-inflammatory/analgesic mechanistic potential of Ibuprofen. This dual approach ensures comprehensive physiological modulation by simultaneously influencing the processing of signals centrally and suppressing the biosynthesis of mediators peripherally.

Dosage and Administration Information

How to Use Maxifen

Maxifen is an oral solid preparation containing a fixed combination of acetaminophen and ibuprofen. Its use is standardized by the parameters that govern the route, frequency, and maximum daily intake, ensuring use remains strictly short-term for acute symptom management.


Official Administration Guidelines

The following instructions describe the administration of the acetaminophen/ibuprofen combination product.

Instruction Details
Route of Administration The medicine is administered orally.
Dosing Schedule The standard dose is typically two tablets, which may be repeated. The Maximum Recommended Daily Dose (MRDD) is strictly limited to six tablets within a 24-hour period for the standard over-the-counter strength.
Frequency and Interval Dosing follows an as-needed (PRN) pattern. The required minimum interval between doses is generally 8 hours.
Administration Specifics Maxifen may be taken with or without food; ingestion with food or milk may be specified. The tablets must be swallowed whole with water.
Co-administration Constraint Instruction mandates against administering Maxifen with any other product containing either acetaminophen or other NSAIDs.

Usage Duration and Special Populations

Maxifen is explicitly designated for short-term use and should not be administered for prolonged periods. Non-prescription labels typically recommend stopping use if pain persists for more than 10 days.

Age-Group Rules: Dosage for individuals under 12 years of age is not established in the non-prescription label and requires specific direction from a healthcare provider.

Missed Dose: If a dose is missed, it should be taken when remembered, but the required minimum interval and the absolute MRDD must always be observed; double doses are not to be taken.

Recent Clinical Evidence

Maxifen: Recent Clinical Evidence

Maxifen, a medicinal product often formulated as a fixed-dose combination of anti-inflammatory and analgesic agents, has been the subject of multiple clinical studies, primarily focusing on its efficacy in acute and chronic pain management and inflammation control.


Efficacy in Pain and Inflammation

Clinical trials, including randomized, double-blind, placebo-controlled studies, have demonstrated that Maxifen formulations provide superior analgesia compared to its individual components alone, particularly in acute pain models such as post-operative dental pain and bunionectomy. The combination is designed to target pain through synergistic mechanisms, which involves the inhibition of cyclo-oxygenase (COX) enzymes that produce pro-inflammatory compounds, alongside other pain-relieving effects. These trials typically assess outcomes such as the Summed Pain Intensity Difference (SPID) over a period, time to perceptible pain relief, and reduction in the need for rescue medication.


Safety and Tolerability Profile

Safety data from human clinical trials indicate that Maxifen is generally well-tolerated at recommended doses. The most common treatment-emergent adverse events (TEAEs) are typically mild to moderate in severity and can involve the gastrointestinal tract or central nervous system. As with all non-steroidal anti-inflammatory drugs (NSAIDs) and their combinations, close monitoring for potential side effects such as gastrointestinal irritation and effects on the kidneys or liver is advised, especially with long-term use. Ongoing research continues to monitor the risk-benefit profile of Maxifen formulations in various patient populations and pain conditions.

Frequently Asked Questions (FAQ)

Common questions about Maxifen (FAQ)


Q: How quickly should I expect Maxifen to start working?

A: Studies and official information indicate that Maxifen is formulated to provide pain relief through its dual components, which are absorbed at different rates. Clinical studies measuring the time to perceptible pain relief for the ibuprofen component suggest a relatively rapid absorption profile.


Q: What is the mechanism of action of Maxifen in the body?

A: Maxifen contains two active ingredients that work through distinct mechanisms to relieve pain and reduce fever. One component acts primarily within the central nervous system to influence pain signaling and temperature regulation. The other component acts mainly at the site of injury or inflammation to inhibit the production of inflammatory chemical mediators.


Q: What should I do if the Maxifen doesn't seem to be helping after a few days?

A: Non-prescription labels typically recommend that if pain persists or worsens after a short period of use (usually specified as 10 days), or if new symptoms appear, a healthcare professional should be consulted. This is the official guidance for when to seek further evaluation of your symptoms.


Q: Can I take Maxifen if I have high blood pressure?

A: Regulatory information strongly advises that individuals with high blood pressure consult a healthcare professional before considering Maxifen use. The official labeling indicates that the ibuprofen component can potentially raise blood pressure and may interfere with the effectiveness of certain medications taken to control blood pressure.


Q: Is the generic version of Maxifen as effective as the brand name?

A: Regulatory requirements mandate that generic versions of drug products, including Maxifen, must demonstrate bioequivalence to the brand-name product. This means the generic contains the same active ingredients in the same strength and is absorbed by the body at the same rate and extent, and is therefore expected to have comparable effectiveness and safety.


Q: Are there any long-term side effects associated with Maxifen use?

A: Official regulatory warnings state that Maxifen is approved for and should be limited to short-term use. The non-steroidal anti-inflammatory drug (NSAID) component carries an increased risk of serious adverse events, such as cardiovascular issues and severe gastrointestinal complications (like bleeding or ulceration), especially with long-term administration.


Q: Can people with kidney problems take Maxifen?

A: Regulatory information cautions that individuals with existing kidney disease or renal function problems require consultation with a healthcare professional before use. Official warnings indicate that the NSAID component may worsen existing kidney conditions or potentially lead to new renal problems. Use in severe kidney disease is often restricted.


Q: Is Maxifen safe for use during pregnancy or while breastfeeding?

A: Official product information advises against the use of Maxifen from 20 weeks of pregnancy onward, as the NSAID component may cause kidney problems in the unborn baby. Because the active components pass into breast milk, consultation with a healthcare professional is strongly recommended before use during this period.


Q: Are there any specific dietary restrictions I need to follow with Maxifen?

A: The most important restriction noted in regulatory documents is the avoidance of alcohol consumption while taking Maxifen. Alcohol consumption significantly increases the risk of liver damage from the acetaminophen component and gastrointestinal bleeding risk from the ibuprofen component. There are generally no other specific food restrictions mandated.


Q: Does Maxifen cause weight gain or weight loss?

A: Official adverse reaction reports indicate that the NSAID component of Maxifen may cause fluid retention and edema (swelling). The fluid retention and edema documented as adverse reactions could potentially be reflected as a weight change on the drug label. Significant weight loss is not typically listed as a common side effect.


Q: Are there different strengths or forms (tablet, liquid) of Maxifen?

A: The official prescribing information specifies that Maxifen is typically available in a specific fixed-dose combination strength as an oral solid preparation (such as a tablet or capsule). Any variation in form or strength, such as a liquid version, would be officially listed in the product's regulatory labeling.


Q: Can Maxifen make me more sensitive to the sun?

A: The official adverse reaction data includes photosensitivity, which is an increased sensitivity to the sun, as a documented, though less common, dermatologic side effect associated with the NSAID drug class. This means skin precautions regarding sun exposure may be warranted while using Maxifen.


Q: Is Maxifen considered a blood thinner?

A: Maxifen is classified as a combination Analgesic and Non-Steroidal Anti-Inflammatory Drug (NSAID). While it is not formally categorized as a blood thinner (anticoagulant), the ibuprofen component can interfere with the blood clotting process (an antiplatelet effect) and increase the risk of bleeding.


Q: Why does Maxifen sometimes have a black box warning?

A: The black box warning is a regulatory requirement highlighting the serious risks associated with the NSAID component of Maxifen. This warning alerts users to the potential for severe and sometimes fatal cardiovascular events, like heart attack or stroke, and serious gastrointestinal complications, such as bleeding and ulceration.


Q: Does Maxifen affect fertility?

A: Official information notes that the NSAID component of Maxifen may temporarily affect female fertility. This potential effect is reversible upon stopping the medication and is related to interference with ovulation. Maxifen is not known to affect male fertility.


Q: Is it okay to take multivitamins with Maxifen?

A: Official drug interaction information primarily lists interactions with other medications and specific substances like alcohol. There are typically no significant regulatory interactions noted between Maxifen and general multivitamins that do not contain its active ingredients (acetaminophen or ibuprofen) or other interacting prescription drugs.


Q: Can Maxifen cause mood changes or depression?

A: Adverse reaction reports indicate that Maxifen can cause general central nervous system side effects like dizziness and drowsiness. Less commonly, adverse reactions such as nervousness and anxiety, and, rarely, depression have been documented in association with drugs of the NSAID class.


Q: Is Maxifen addictive or habit-forming?

A: Maxifen is generally not classified as a controlled substance by regulatory authorities. This classification indicates that the medicine does not possess the high potential for abuse or dependence that would cause it to be considered addictive or habit-forming.


Q: What is the difference between immediate-release and extended-release Maxifen?

A: If an extended-release (ER) version of Maxifen is available, the official labeling would specify its unique pharmacokinetic profile. An ER formulation is designed to release the medication slowly over a longer period, typically resulting in a less frequent dosing schedule compared to the standard, or immediate-release (IR), tablet.


Q: Is Maxifen safe for children and teenagers?

A: Non-prescription labels state that the use of Maxifen in children under 12 years of age has not been established and requires a doctor's determination. For adolescents (ages 12 to 18), the non-prescription dose may be the same as the adult dose, but consultation with a healthcare professional is recommended for age-appropriate guidance.


Q: Why might a patient need to stop taking Maxifen suddenly?

A: Official patient information states that Maxifen should be discontinued immediately if signs of serious adverse reactions occur. These reactions include any signs of a severe allergic reaction (such as difficulty breathing or swelling), gastrointestinal bleeding (e.g., black or tarry stools), or indications of liver problems (such as jaundice).


Q: Are there any new indications for Maxifen being studied in research?

A: Clinical trial registries show ongoing studies for Maxifen formulations, which are designed to formally evaluate its efficacy in treating various types of acute and chronic pain beyond its already approved indications. These trials often focus on specific applications like postoperative pain management.


Q: What should I avoid doing while taking Maxifen?

A: Based on official warnings, you should strictly avoid consuming alcohol and taking any other products containing acetaminophen or other NSAIDs. Additionally, there is a timing constraint: Maxifen should be taken either at least eight hours before or 30 minutes after taking a low-dose aspirin for cardioprotection.

How should Maxifen be stored and disposed of?

How to Store and Dispose of Maxifen?

Maxifen must be stored and disposed of according to strict regulatory guidelines to maintain its stability and ensure safety.


Storage Conditions

Requirement Specific Mandate
Temperature Store at Controlled Room Temperature (20°C to 25°C or 68°F to 77°F).
Protection Protect from moisture and excessive heat; keep in the original container and tightly closed.
Safety The product must be stored out of the reach of children.

Disposal Instructions

Unused or expired Maxifen should be disposed of via an authorized drug take-back program where available. If no such program exists, the medicine must be removed from its container, mixed with an undesirable substance (such as dirt or coffee grounds), sealed in a bag, and then placed in the household trash. Do not dispose of Maxifen by flushing it down a toilet or pouring it down a drain.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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