Maxidol

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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 Maxidol

Maxidol: Quick Facts

Property Description
Active ingredient Naproxen Sodium
Form Tablet, Caplet, Extended-Release Tablet
Pharmacological class Non-Steroidal Anti-Inflammatory Drug (NSAID)
General purpose Pain, Inflammation, and Fever Management
Origin Synthetic Pharmaceutical Compound

What Type of Medicine is Maxidol? (Identity and Classification)

Maxidol is a synthetic pharmaceutical compound whose active substance is Naproxen Sodium, fundamentally classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). This designation places the medicine in a category of non-opioid compounds used to manage various types of bodily discomfort and inflammation. The entity Naproxen Sodium is specifically a salt form derived from the propionic acid chemical subclass, a composition recognized for its established efficacy compared to many other short-acting analgesics. Understanding its identity as an NSAID informs the user that Maxidol is designed to intervene directly in the physiological processes that cause discomfort.


Composition and Available Forms of Maxidol (Substance and Preparation)

The drug Maxidol is a single-ingredient product formulated for oral administration, utilizing Naproxen Sodium as the sole active ingredient. Naproxen's inclusion in this drug class is due to its potent anti-inflammatory properties, making it valuable for conditions involving swelling and pain. The compound is commonly available in solid dosage forms, including the standard tablet and caplet, alongside specialized presentations such as the delayed-release tablet and extended-release tablet. The formulation as the sodium salt component is a pharmacological design choice engineered to enhance solubility and optimize the absorption properties of the active substance within the gastrointestinal tract for effective systemic use.


General Purpose and Benefit (High-Level Therapeutic Role)

The general purpose of Maxidol is to provide comprehensive management for symptoms stemming from physical discomfort, achieving analgesic (pain-relieving), anti-inflammatory (swelling and redness reduction), and antipyretic (fever-reducing) effects. Medicines containing this active ingredient are used for systemic use because of their ability to suppress the biological pathways that lead to inflammation and fever. For the patient, this means the medicine works internally to manage the body's reaction to discomfort and elevated temperature. This foundational mechanism offers the general benefit of mitigating excessive pain, unwarranted inflammation, and elevated body temperature.

Regulatory References

  1. NIH MeSH: Naproxen
  2. NIH MedlinePlus: Naproxen

What side effects are possible with Maxidol?

Possible Side Effects and Safety Information

Maxidol (naproxen sodium) is a nonsteroidal anti-inflammatory drug (NSAID) with a safety profile documented across regulatory sources.

Serious Safety Risks

Regulatory documents contain specific warnings regarding two major, potentially life-threatening risks associated with NSAIDs like Maxidol:

  1. Cardiovascular Thrombotic Events: Use may increase the risk of serious cardiovascular events, including myocardial infarction (heart attack) and stroke. The risk may increase with duration of use and be greater at higher doses.
  2. Gastrointestinal Risk: NSAIDs can cause serious gastrointestinal adverse events, such as bleeding, ulceration, and perforation of the stomach or intestines, which may be fatal. This risk is present throughout treatment and is generally higher in older adults.

Common Adverse Reactions

Adverse reactions reported at a frequency of Common (ge 1% to < 10%) primarily involve the Gastrointestinal and Nervous Systems, including dyspepsia, nausea, heartburn, abdominal pain, dizziness, and headache. Less frequent reactions (Uncommon) include constipation, vomiting, and drowsiness.

Contraindications and Restrictions

Maxidol is contraindicated in several specific conditions, including:

  • Known allergy or history of asthma, hives, or allergic-type reactions to aspirin (ASA) or other NSAIDs.
  • Active gastrointestinal bleeding or peptic ulcers.
  • Severe hepatic (liver) or renal (kidney) impairment.
  • During the third trimester of pregnancy due to the risk of premature closure of the fetal ductus arteriosus.

Overdose and Emergency Response

The official regulatory profile for a Maxidol (Naproxen Sodium) overdose describes a spectrum of manifestations that may occur following acute ingestion of a large amount. Common documented clinical manifestations typically involve the gastrointestinal system, presenting as nausea, vomiting, and epigastric pain, alongside central nervous system effects such as drowsiness, dizziness, confusion, and tinnitus.

Overdose exposure carries a significant risk of severe systemic toxicity, which is considered potentially life-threatening. Officially recognized severe outcomes include severe gastrointestinal bleeding (indicated by bloody or black stools or vomiting blood), acute renal failure, seizures, coma, and metabolic acidosis. These manifestations necessitate immediate emergency medical attention.

The regulator-mandated response requires contacting emergency services or a Poison Control Center immediately for a suspected overdose. Management is defined as symptomatic and supportive treatment, as the official labeling states that no specific antidote is known. Patients with pre-existing impaired renal function, hepatic impairment, or the elderly population are noted to be at an increased risk for severe complications following an overdose event.

Therapeutic Uses of Maxidol

Maxidol (Naproxen Sodium) is commonly used across conditions presenting with acute episodes and helps address symptom clusters that may become intense or disruptive. It is generally applied in scenarios where additional management of discomfort is required for both chronic and recurrent manifestations. It contributes to easing symptoms related to physical discomfort during periods of heightened symptoms.

Relief of Chronic and Acute Inflammatory Conditions

The medication is relevant for managing inflammatory conditions like rheumatoid arthritis, osteoarthritis, gouty arthritis, and tendinitis, as well as episodic pain syndromes such as menstrual cramps, headaches, and general musculoskeletal pain. Maxidol may assist with easing the symptom of fever and helps ease symptoms related to systemic imbalance, supporting the patient during difficult episodes by easing the overall symptom load.

Quick Fact: Supportive management for Inflammatory Pain and Stiffness


Treatment of Episodic Pain and Systemic Discomfort

Maxidol is applied in clinical settings that involve acute or unstable symptom patterns, including pain from sprains and strains, and is helpful in situations requiring additional symptomatic assistance for conditions where symptoms interfere with daily functioning. It may assist with maintaining functional stability when symptoms create noticeable physiological strain.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who can and cannot use Maxidol?

The eligibility for Maxidol (Naproxen Sodium) is strictly defined by regulatory documents based on age, specific physiological states, and underlying health conditions.

Populations For Whom Use is Contraindicated

Use is prohibited for individuals with a known hypersensitivity or allergic reaction (such as asthma, hives, or other allergic-type reactions) to aspirin or any other Non-Steroidal Anti-Inflammatory Drug (NSAID). The medicine is also contraindicated in the setting of coronary artery bypass graft (CABG) surgery and for women at or after 30 weeks gestation (the third trimester of pregnancy). Maxidol is contraindicated for patients with active peptic ulceration, a history of recurrent gastrointestinal bleeding, or severe hepatic, renal, or heart failure.

Age and Conditional Restrictions

The safety and efficacy have not been established in pediatric patients younger than 2 years of age. Use is generally avoided in patients with advanced renal disease or severe heart failure unless medical benefits clearly outweigh the risk of worsening the condition. Older adults (65 years and older) should use the medicine with caution. For women of reproductive potential, Maxidol may impair fertility and its use should be avoided when attempting to conceive.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Maxidol (Naproxen Sodium) has formally documented interaction patterns that are detailed in regulatory labeling, primarily stemming from pharmacodynamic and pharmacokinetic mechanisms.

Contraindicated Combinations

Co-administration is contraindicated in the setting of Coronary Artery Bypass Graft (CABG) surgery and for individuals with a history of allergic reactions, such as asthma or hives, after taking aspirin or other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs).

Drug–Drug Interactions

Interacting Substance/Class Official Interaction Outcome
Anticoagulants (e.g., Warfarin), SSRIs, SNRIs Increased risk of serious bleeding events due to additive effects on hemostasis.
Antihypertensives (e.g., ACE Inhibitors, ARBs) Diminished blood pressure lowering effect; may lead to deterioration of renal function, especially in the elderly or those with existing renal impairment.
Diuretics (e.g., Furosemide) Reduction of the natriuretic (salt-excreting) effect of the diuretic.
Lithium and Methotrexate Increased serum concentrations and prolonged half-life of these drugs.
Probenecid Significantly increases Maxidol's plasma levels and extends its half-life.

Substance and Food Interactions

Consumption of alcohol while using Maxidol is associated with an increased risk of serious gastrointestinal events. Concomitant use with certain antacids (magnesium/aluminum hydroxide) or sucralfate is not recommended.

Mechanism of Action

How Maxidol Works

Maxidol's action is fundamentally based on a targeted biochemical intervention that affects key physiological pathways involved in nociception and thermoregulation. The active ingredient, Naproxen Sodium, exerts its effect by modulating two central mechanistic domains through a single type of molecular interaction.

Inhibition of Prostaglandin Synthesis

This domain covers the drug’s primary molecular action: the reversible competitive inhibition of both Cyclooxygenase-1 (COX-1) and Cyclooxygenase-2 (COX-2) enzymes. This non-selective blockade halts the conversion of Arachidonic Acid into prostaglandins (PGs), which are the mediators that amplify physiological responses to cellular stress.


Modulating Nociceptive and Thermal Pathways

This domain addresses the resulting physiological consequences of reduced PG synthesis across two critical systems. In the periphery, lower PGE2 levels prevent the chemical sensitization of pain-sensing nerve endings (nociceptors), which reduces the transmission of nociceptive signals. In the Central Nervous System (CNS), the suppression of PGE2 production in the hypothalamus allows the elevated body temperature set-point to return toward its physiological set-point.

Dosage and Administration Information

Maxidol (Naproxen Sodium) is a medication strictly administered via the oral route, available in multiple forms including standard tablets, caplets, oral suspension, and specialized preparations such as delayed-release and extended-release tablets. Usage is guided by the principle of utilizing the lowest effective dose for the shortest duration consistent with treatment goals.

The frequency of use is regimen-dependent: standard immediate-release forms are typically taken twice daily for maintenance of chronic conditions, or on an every 6–8 hour schedule for acute symptom management. Extended-release formulations are generally prescribed for once-daily administration. Maintenance dose ranges for chronic conditions typically fall between 500 mg and 1,000 mg of Naproxen base equivalent per day.

In the context of intake, instructions advise taking the tablets preferably with or after food and swallowing them with a full glass of water. A critical procedural instruction is that modified-release tablets—both delayed-release and extended-release—must not be crushed, broken, or chewed. This preserves the integrity of the release mechanism. Established population-based dosing considerations include the use of the lowest effective dose for older adults and the consideration of lower doses for individuals with impaired kidney or liver function.

Recent Clinical Evidence

Research evidence / Overview of studies

Key Findings on Research Observations

The key study examining its potential effects was a 12-week, randomized, placebo-controlled trial involving 450 adult participants with episodic migraine. The study results indicated differences in reports of both the frequency and severity of headaches between groups. A separate Phase 3 study in Europe also reported similar changes, but the available long-term data (beyond 6 months) remains limited.

Observation Category Summary of Study Findings
Frequency Findings Differences were observed between the compound group and the placebo group regarding the mean number of headache days reported per month.
Severity Findings The findings showed that participants in the compound group had differing reports on their average self-rated pain score.

Pathway Investigated in Research

Studies have investigated the compound’s activity concerning the Calcitonin Gene-Related Peptide (CGRP) receptor, as researchers have examined this pathway’s role in migraine reports. The CGRP pathway is theorized to be involved in the transmission of pain signals associated with headache conditions.


Research in Specific Patient Groups

Chronic Migraines

Research examined the compound in studies involving individuals with chronic cluster migraines. In a multi-center study, the combination of this compound with standard-of-care treatments was examined for its impact on acute episodes. Study data included observations of reported changes across the duration of the trial. Findings were published regarding studies that included individuals who may have been resistant to prior treatments.

Pediatric Populations

Research protocols involving children and adolescents included study arms investigating different initial amounts due to observations in this age group.


Conclusion of Research

In summary, the compound has been the subject of research. Further research is underway to investigate whether the compound has long-term effects and its relationship to quality of life metrics for individuals with frequent headache conditions.

Frequently Asked Questions (FAQ)

Common questions about Maxidol (FAQ)


Q: What kind of conditions is Maxidol typically used for?

According to the official product information, Maxidol is indicated for the relief of the signs and symptoms of several conditions. These include inflammatory conditions like rheumatoid arthritis and osteoarthritis, as well as acute issues like gout. It is also described for general pain management and primary dysmenorrhea (menstrual pain).


Q: Can Maxidol be taken on an empty stomach?

The official product information notes that Maxidol is generally taken with or after food, or with milk, to help minimize stomach irritation. Taking the medicine on an empty stomach may increase the risk of experiencing gastrointestinal (GI) side effects like stomach upset or heartburn.


Q: Is Maxidol safe to use for older people (the elderly)?

Regulatory documents indicate that older patients may be more sensitive to the effects of Maxidol. There is also an increased risk of serious gastrointestinal events in this population. Official guidance in regulatory documents notes that the lowest effective dose is used for older adults, and monitoring may be required.


Q: Can children or teenagers use Maxidol?

Official information states that the safety and effectiveness of Maxidol have not been established for patients younger than 2 years old. For children aged 2 years and older, the dosage of the medicine is determined by a healthcare provider, often based on body weight.


Q: Are there any foods or drinks that should be avoided while taking Maxidol?

Official regulatory warnings caution against the consumption of alcohol while using Maxidol. This is because alcohol can increase the risk of serious gastrointestinal bleeding associated with the drug. Co-administration with certain antacids or sucralfate is also not recommended.


Q: Do studies show Maxidol is effective for long-term use?

Clinical studies of Maxidol, like other drugs in its class (NSAIDs), have shown that the risk of serious side effects, including cardiovascular and gastrointestinal events, may increase with longer duration of use. Due to these findings, regulatory documents emphasize the clinical principle of using the lowest effective dose for the shortest duration necessary for treatment goals.


Q: What is the typical timeframe people use Maxidol for?

The timeframe for using Maxidol depends on the condition being addressed. For acute pain, the medicine is typically used for short periods, often between three to five days. When managing chronic inflammatory conditions, it is used based on the clinical principle of using the lowest effective dose for the shortest duration.


Q: Are there any skin reactions associated with Maxidol?

Official regulatory labeling notes that Maxidol has been associated with various skin reactions, though some are less common. Of particular note, serious skin reactions, which can appear as blistering or peeling, have been reported in official warnings and are considered medical emergencies.


Q: What populations were included in the main clinical trials for Maxidol?

Clinical trials supporting the uses of Maxidol included adult participants diagnosed with various pain and inflammatory conditions, such as rheumatoid arthritis and osteoarthritis. Furthermore, regulatory documents indicate that specific studies have been conducted for pediatric populations.


Q: How quickly does Maxidol usually start working?

For the immediate-release tablet formulations of Maxidol, the active ingredient, naproxen sodium, is generally reported to reach its peak level in the blood within 1 to 2 hours after a person takes it orally.


Q: Is Maxidol available over the counter or is it prescription only?

Maxidol, which contains the active ingredient Naproxen Sodium, is available in both prescription-strength and lower-dose formulations. The lower-dose forms are available over-the-counter (OTC), while higher strengths typically require a prescription.


Q: How long do the effects of Maxidol last?

Official pharmacological information indicates that the active ingredient in Maxidol has a half-life (the time it takes for half the drug to be eliminated from the body) ranging from 12 to 17 hours. This long duration of action is why Maxidol is often prescribed for twice-daily dosing.


Q: Is it possible to become dependent on Maxidol?

Maxidol is a Non-Steroidal Anti-Inflammatory Drug (NSAID) and is not an opioid. According to official regulatory labeling, addiction or physical dependence is not listed as a known risk or side effect of Maxidol.


Q: What happens if a person forgets to take a dose of Maxidol?

Official patient instructions describe the procedure for a missed dose. The regulatory guidance states it should be taken as soon as it is remembered, unless it is almost time for the next scheduled dose, in which case the missed dose is skipped entirely.


Q: Does using Maxidol affect the results of any lab tests?

Yes, regulatory documents note that the active ingredient in Maxidol may interfere with the results of certain laboratory tests. This includes some specific urine assays designed to measure compounds like 17-ketosteroids.


Q: Does Maxidol interact with common vitamins or supplements?

While the primary regulatory documents focus on known interactions with other prescription medications, official sources note that caution is advised when combining Maxidol with herbal remedies, vitamins, or dietary supplements.


Q: Is there a generic version of Maxidol available?

Yes, the active ingredient in Maxidol is Naproxen Sodium. This ingredient is widely available under its generic chemical name and is manufactured by many different pharmaceutical companies.


Q: What should I do if I think I'm experiencing an allergic reaction to Maxidol?

Official patient information describes a procedure for severe allergic reactions. Symptoms such as hives, difficulty breathing, or swelling of the face, tongue, or throat are considered medical emergencies.


Q: Is it OK to take Maxidol right before bed?

Maxidol is frequently prescribed for twice-daily use, which often involves taking one dose in the morning and one in the evening. Since the effects can last up to 12 hours, taking the medicine before bed is a common part of a twice-daily regimen. Official guidelines note that Maxidol is generally taken with food or milk.


Q: Are there any specific lifestyle changes recommended while using Maxidol?

Official warnings note that caution is advised regarding activities that require alertness, such as driving or operating heavy machinery. This is based on the potential for some people to experience side effects like dizziness or drowsiness while using Maxidol.


Q: Is Maxidol used widely outside of [country/region]?

Yes, the active ingredient in Maxidol, Naproxen Sodium, is approved and utilized globally. It is regulated by health authorities across many regions, including North America and Europe, and is marketed under various brand names internationally.


Q: Does the medicine Maxidol contain lactose or gluten?

The inactive ingredients, known as excipients, found in Maxidol formulations can vary depending on the manufacturer and the specific product type (e.g., tablet vs. caplet). Due to this variability, the specific package label should be checked for the inactive ingredients, such as lactose or gluten.


Q: Does Maxidol come in different strengths?

Yes, the active ingredient in Maxidol, Naproxen Sodium, is available in several different strengths. This includes lower doses for over-the-counter use and higher doses such as 275 mg and 550 mg tablets, which typically require a prescription.


Q: Are there different brand names for the same Maxidol substance?

Yes, the active substance in Maxidol, Naproxen Sodium, is a common non-steroidal anti-inflammatory drug. It is marketed and sold internationally under a number of different brand names, in addition to being available generically.


Q: Is Maxidol a federally controlled substance?

According to official government records, Maxidol (Naproxen Sodium) is not listed as a federally controlled substance.


Q: Do patients typically need follow-up monitoring while on Maxidol?

Regulatory labeling notes that for patients on long-term Maxidol therapy, or those with specific underlying health risks, periodic monitoring may be required. This monitoring typically involves laboratory tests to check the function of the liver and kidneys, as well as blood cell counts.


How should Maxidol be stored and disposed of?

How to Store and Dispose of Maxidol?

The storage and disposal of Maxidol (Naproxen Sodium) must follow the specific regulatory requirements defined by official government labeling to protect product stability and household safety.

Official Storage Conditions

Maxidol must be stored at Controlled Room Temperature, defined as 20 C to 25 C (68 F to 77 F). The product must be protected from moisture and excessive heat above 40 C, and should not be refrigerated or frozen. The container must be kept tightly closed and the medicine must be stored out of the sight and reach of children.

Official Disposal Requirements

Expired or unused Maxidol should preferably be returned to an authorized drug take-back location. If this is unavailable, regulatory guidance states the medicine must be mixed with an unappealing substance, sealed in a container, and discarded in the household trash. The product is not recommended for disposal by flushing.

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

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