Flamesan

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Medically reviewed

Marina Burgos

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 Flamesan

What is Flamesan?

Flamesan is a pharmacological treatment containing the active substance naproxen. It belongs to a group of medications known as non-steroidal anti-inflammatory drugs (NSAIDs). These compounds are characterized by their ability to manage physiological processes associated with inflammation, pain, and fever.

Mechanism of Action

The medication works by inhibiting the activity of enzymes called cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2). These enzymes are responsible for the synthesis of prostaglandins, which are lipid compounds that act as chemical messengers in the body. When tissue damage or injury occurs, prostaglandins are produced, leading to the sensation of pain and the development of swelling and heat. By reducing the production of these substances, Flamesan helps to mitigate these inflammatory responses.

Therapeutic Applications

Flamesan is primarily utilized to address various conditions involving acute or chronic inflammation and musculoskeletal discomfort. It is frequently used in the management of:

  • Arthritic Conditions: Including rheumatoid arthritis, osteoarthritis, and ankylosing spondylitis.
  • Acute Musculoskeletal Disorders: Such as strains, sprains, and direct soft tissue injuries.
  • Joint and Tendon Inflammation: Including bursitis, tendinitis, and tenosynovitis.
  • Gout: Specifically for the management of acute attacks involving joint pain and swelling.
  • Menstrual Discomfort: Used to address primary dysmenorrhea.

Pharmacological Profile

As an NSAID, the medication is absorbed into the bloodstream and distributed throughout the body to reach the site of inflammation. It is known for having a longer half-life compared to some other medications in the same class, which typically allows for less frequent administration. The substance is processed by the liver and eventually eliminated from the system through the kidneys.

Regulatory References

  1. WHO Model List of Essential Medicines

What side effects are possible with Flamesan?

Possible Side Effects and Safety Information

The safety profile of Flamesan is documented based on reports from clinical trials and post-marketing surveillance, as summarized by regulatory authorities.

Frequency-Classified Adverse Reactions

Adverse reactions are classified based on the frequency observed in clinical studies and grouped by the body system affected (System-Organ Class).

Frequency Examples of Body Systems Involved
Very Common (occurs in 1 in 10 or more people) Gastrointestinal disorders, Nervous system disorders
Common (occurs in 1 in 100 to less than 1 in 10 people) General disorders, Skin and subcutaneous tissue disorders
Uncommon (occurs in 1 in 1,000 to less than 1 in 100 people) Blood and lymphatic system disorders
Rare (occurs in 1 in 10,000 to less than 1 in 1,000 people) Immunologic disorders, Cardiac disorders

Serious Adverse Reactions

Certain adverse events are considered Serious Adverse Reactions (SARs) and are subject to specific regulatory monitoring due to their potential severity. These documented serious reactions include severe hypersensitivity reactions, such as anaphylaxis, serious skin reactions like Stevens-Johnson syndrome, and severe blood dyscrasias, such as agranulocytosis.

Safety Restrictions and Population-Specific Considerations

Flamesan is contraindicated in patients with a known history of hypersensitivity to the active substance and in individuals with severe hepatic impairment.

Specific caution is advised when administering Flamesan to the elderly population, as they may exhibit increased sensitivity to potential adverse effects. The medicine is not authorized for use in pediatric populations and is contraindicated during pregnancy and breastfeeding. Regulatory documentation notes that the risk of certain adverse reactions may be higher with prolonged exposure or when recommended doses are exceeded.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documentation for Flamesan (Diclofenac) details specific clinical signs associated with an overdose. Manifestations typically involve gastrointestinal distress, such as nausea, vomiting (which may include blood), stomach pain, and diarrhea. Central Nervous System (CNS) effects are also documented, presenting as headache, drowsiness, confusion, agitation, and tinnitus.

Overdose can lead to severe, life-threatening systemic outcomes. Regulatory information highlights the risk of acute renal failure (indicated by little or no urine output) and serious gastrointestinal hemorrhage. In cases of massive overexposure, profound CNS depression, including coma and seizures, is possible. Due to the potential for these severe complications, regulators mandate that immediate medical help be sought for any suspected overdose; patients must contact emergency services or a poison control center right away.

The regulatory profile states that no specific antidote is described or known. Treatment for overdose is therefore symptomatic and supportive, requiring continuous vital sign monitoring, and may include procedures like the administration of activated charcoal in a clinical setting. Population-specific considerations note that the elderly and individuals with pre-existing renal impairment face an increased risk of renal function deterioration following an overdose.

Therapeutic Uses of Flamesan

Flamesan is applied in clinical settings that involve acute or unstable symptom patterns, and is used for symptomatic relief across several key therapeutic domains. It is considered relevant when supportive symptom management is appropriate and is commonly used across conditions characterized by episodic or fluctuating manifestations.

The medication may assist in addressing symptom clusters that include persistent joint pain, physical stiffness, and swelling, particularly in conditions like Osteoarthritis, Rheumatoid Arthritis, and Ankylosing Spondylitis. It is applied in scenarios where additional management of discomfort is required, such as managing pain following minor soft tissue injuries or during post-operative recovery. Furthermore, the medication may support patients during difficult episodes characterized by severe discomfort, including migraine attacks, painful menstrual cramps (primary dysmenorrhea), episodes of painful gout, and elevated body fever.

“It supports the patient during difficult episodes by easing distress and assists with maintaining functional stability.”


Quick Fact: Relief for Pain and Inflammation

The therapeutic benefit of Flamesan includes addressing the symptom triad of pain, inflammation, and fever that creates noticeable physiological strain. The medication is commonly used across conditions presenting with acute episodes where easing discomfort is important for the patient to cope more steadily with symptom fluctuations.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who Can and Cannot Use Flamesan? (Diclofenac)

The eligibility for Flamesan is defined strictly by regulatory labeling, which outlines specific populations who must avoid the medicine due to safety risks and conditions that require careful consideration.

Classification Status Populations and Conditions
Contraindicated Must Not Use Known hypersensitivity to diclofenac or other NSAIDs (e.g., aspirin) that causes asthma or urticaria. Patients with established Ischaemic Heart Disease, Cerebrovascular Disease, Peripheral Arterial Disease, or Congestive Heart Failure (NYHA Class II–IV). Pain management in the setting of Coronary Artery Bypass Graft (CABG) surgery.
Age Restriction Restricted Systemic use is generally not established or not approved for children younger than 12 to 14 years, depending on the formulation. Older adults (ge 65 years) require close monitoring due to increased risk of serious adverse events.
Physiological Status Prohibited/Caution Pregnancy is contraindicated from 30 weeks gestation onward. Avoidance is recommended from 20 weeks gestation. Use is not recommended while breastfeeding.
Comorbidity Limits Caution Required Patients with mild-to-moderate renal or hepatic impairment, a history of GI ulceration, or other cardiovascular risk factors must use the medication only after careful professional consideration.

What should I know about interactions with other medicines?

Flamesan Interactions with other medicines and products

The regulatory documentation for Flamesan (Diclofenac) details several clinically significant interaction patterns with other medicinal products and substances.


Prohibited Combinations and Restrictions

Co-administration with other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), including Aspirin used for pain relief, is contraindicated due to an officially documented, compounded risk of serious gastrointestinal events. Systemic formulations of Flamesan are also restricted for use in patients with established severe cardiovascular disease, and are contraindicated for the treatment of perioperative pain following Coronary Artery Bypass Graft (CABG) surgery.


Interaction Mechanisms and Effects

Pharmacodynamic interactions officially document an increased risk of serious bleeding when Flamesan is co-administered with Anticoagulants (e.g., Warfarin), Anti-platelet agents, or Selective Serotonin Reuptake Inhibitors (SSRIs). Furthermore, combining Flamesan with Diuretics or Antihypertensive agents (ACE inhibitors, ARBs) may officially diminish their intended effect and increase the risk of renal function deterioration.

Pharmacokinetic interactions indicate that CYP2C9 inhibitors (such as Voriconazole) can significantly increase the plasma concentrations of Flamesan. Conversely, Flamesan increases the exposure of co-administered drugs like Lithium and Methotrexate by reducing their renal clearance.


Administration Constraints

The official documentation specifies that Alcohol consumption increases the risk of serious gastrointestinal complications. Specific formulations, such as the oral solution, must be administered on an empty stomach as a condition for their proper absorption. Elderly patients are noted to be at an increased risk of renal-related interactions when taking Flamesan concurrently with Diuretics or ACE inhibitors.

Mechanism of Action

Dual Modulation of Prostaglandin Synthesis and Signaling

Flamesan's primary action is a dual-mechanism engagement involving the inhibition of Cyclooxygenase (COX) enzymes and antagonism of the Prostaglandin E2 (PGE2) receptor (EP4). This dual-pathway interference restricts the biosynthesis and downstream signaling of key eicosanoid mediators. The inhibition of PGE2 synthesis and blockade of its primary receptor result in decreased capillary permeability and localized fluid accumulation at the tissue level.


Modulating Peripheral Nociceptor Hypersensitivity

This mechanistic domain covers the downstream effect on peripheral nerve function. By reducing the availability and effect of the PGE2 mediator, Flamesan prevents the continuous chemical sensitization of peripheral pain-sensing fibers (nociceptors). The resulting physiological effect is an elevation of the pain threshold, which modifies the resting excitability threshold for nerve activity.


Influencing the Hypothalamic Thermostat

Systemically, Flamesan influences core body temperature via the central nervous system. Inhibition of COX enzymes reduces PGE2 production within the brain's thermoregulatory center (hypothalamus), which is responsible for pathologically elevating the body’s temperature set-point. This mechanism contributes to the modulation of this process, resulting in the physiological consequence of adjustment of the thermoregulatory set-point in the hypothalamus.

Dosage and Administration Information

Flamesan is administered through several routes, including oral, topical, intravenous (IV), and rectal methods, which determine whether the medicine acts systemically or locally. Regardless of the route, the general principle for use is to employ the lowest effective dose for the shortest duration necessary to achieve the desired outcome.

Standard adult dosing regimens are highly dependent on the formulation and the condition being addressed. Oral daily doses are frequently administered in a divided schedule, such as 50 mg two or three times daily or 75 mg twice daily for chronic inflammatory conditions. The maximum daily oral dose for most formulations is typically restricted to 150 mg. Extended-release oral tablets are often prescribed for once-daily administration.

The timing of administration in relation to meals varies by dosage form. Delayed-release and enteric-coated tablets may be taken with food. However, specific immediate-release forms, such as the powder for oral solution, are taken on an empty stomach—generally 1 hour before or 2 hours after a meal—to optimize drug absorption. This powder is mixed with 1 to 2 ounces of water and consumed immediately.

To ensure proper delivery, specialized dosage forms must adhere to specific handling instructions. Controlled-release tablets and capsules are to be swallowed whole and must not be crushed, broken, or chewed. Furthermore, different oral formulations (e.g., immediate-release vs. extended-release) are not bioequivalent and are not interchangeable on a milligram-for-milligram basis. For older adults, conservative use is appropriate, specifically applying the lowest effective dose for the shortest duration.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Flamesan

The clinical evaluation for Flamesan (diclofenac) has primarily relied on formal scientific research methods, including Randomized Controlled Trials (RCTs) and comprehensive analyses of multiple studies (meta-analyses), as reviewed by authoritative government health agencies. This research explores how symptoms change for defined patient groups over specific periods of observation.


Evidence for Chronic Inflammatory Joint Conditions

Research was studied for the use of oral Flamesan in chronic inflammatory conditions, such as Rheumatoid Arthritis and Ankylosing Spondylitis, which are marked by functional limitations. Studies monitored outcomes related to physical discomfort and daily functioning. Findings reported measurements of patient-reported experiences over the study's duration. Research is ongoing regarding the relationship between treatment strategy and changes in long-term joint structure, and reported findings have been mixed.


Evidence for Acute Pain and Symptomatic Relief

Flamesan was evaluated in numerous short-term RCTs focusing on acute or temporary symptomatic events, such as pain following minor soft tissue injuries or painful menstrual cramps. Research primarily examined outcomes describing episodic or acute changes in pain intensity over very defined time intervals (hours or a few days). Research describes consistent patterns for these short-term outcomes. The research framework is strictly focused on immediate, short-term outcomes.


Evidence for Localized Musculoskeletal Pain (Topical Use)

Research for topical Flamesan was studied for its role in managing chronic localized discomfort, particularly in Osteoarthritis of the knee or hand. Trials examined patient-reported outcomes describing perceived discomfort over periods typically ranging from six to twelve weeks. A high response rate observed in placebo groups is a factor for research to explore. Follow-up durations were often limited, and long-term effects are not fully established for continuous localized use.


Summary of Research Landscape

The available research documents findings from trials with varied follow-up durations, including long-term extensions. However, research focusing on the very long-term (years of continuous use) durability of symptom relief is limited. For several specialized patient groups, such as children or pregnant populations, data are still emerging, meaning the findings describe group patterns but do not provide a complete characterization.

Frequently Asked Questions (FAQ)

Common questions about Flamesan (FAQ)


Q: Is Flamesan considered a long-term or short-term medication?

Official regulatory documents generally advise utilizing the lowest effective dose of Flamesan for the shortest duration possible. This approach helps to minimize the risk of serious side effects. For patients receiving prolonged treatment, the need for continued symptomatic relief is subject to periodic re-evaluation by the prescribing professional.

Q: Is it normal to feel tired or have low energy when first starting Flamesan?

Side effects reported in clinical trials include symptoms such as excessive tiredness (fatigue) and dizziness, which are listed under nervous system disorders. Official product information also notes that severe tiredness or fatigue can be a symptom of a more serious adverse reaction, such as a liver issue or low red blood cell levels. Any severe tiredness that does not go away is information that should be communicated to the prescribing professional.

Q: Is a mild headache a common side effect of Flamesan, and does it usually go away?

A headache is a commonly reported side effect in clinical trials of Flamesan. While some side effects may diminish over time, a headache that is severe or does not resolve is a concern to be raised with the prescribing professional.

Q: Can Flamesan be taken by people who have a history of kidney issues?

Flamesan is contraindicated (meaning its use is generally prohibited) in patients with advanced renal disease or renal failure. Use of this medication in patients with kidney issues is generally avoided unless the potential benefits are determined to significantly outweigh the risk of worsening kidney function. Treatment in other cases of kidney issues is generally initiated only after careful professional consideration.

Q: Does Flamesan interact with common over-the-counter pain relievers like ibuprofen or acetaminophen?

Official regulatory warnings state that Flamesan is contraindicated for concurrent use with other Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), which include common pain relievers like ibuprofen. This restriction is due to an increased risk of serious gastrointestinal side effects. However, official sources describe that the medication is generally not associated with the contraindications observed with other NSAIDs, such as acetaminophen (paracetamol).

Q: Are there any foods or beverages that should be avoided when taking Flamesan?

Official documentation states that the co-consumption of alcohol increases the risk of serious gastrointestinal complications. Additionally, specific oral formulations are required to be administered on an empty stomach (typically 1 hour before or 2 hours after a meal) for proper absorption.

Q: Does the effectiveness of Flamesan decrease over time with long-term use?

Regulatory safety warnings do not specifically mention the development of tolerance or decreased effectiveness over time. However, official guidance indicates that a patient's need for symptomatic relief and response to treatment is subject to periodic re-evaluation by the prescribing professional when treatment is prolonged past four weeks.

Q: How is Flamesan typically removed from the body (metabolism/excretion)?

The medication is primarily removed from the body through a two-step process. First, it undergoes metabolism (chemical breakdown) in the liver. The resulting breakdown products are then largely excreted, mainly via the urine (about 65%) and to a lesser extent via bile (about 35%).

Q: Can Flamesan cause insomnia or affect sleep patterns?

Clinical trial reports list Nervous System Disorders as a category of very common side effects. Specific issues such as anxiety and trouble sleeping (insomnia) have also been mentioned in post-marketing reports for some patients.

Q: Does Flamesan carry any special warnings from regulatory bodies like the FDA?

Yes, the medication carries Boxed Warnings (the most serious warning) from regulatory bodies like the FDA. These warnings alert patients and professionals to the potential for serious cardiovascular thrombotic events (such as heart attack and stroke) and serious gastrointestinal adverse events (including bleeding and ulceration).

Q: Is Flamesan available in different strengths?

Yes, Flamesan is available in different strengths and formulations. These include solid oral dosage forms, such as 50 mg and 75 mg delayed-release tablets, and prolonged-release tablets. Different formulations are designed to be administered at varying frequencies.

Q: Why do some people say Flamesan has made them feel 'foggy' or unfocused?

Adverse event reports list central nervous system effects such as confusion and dizziness. These medically defined side effects may be what some patients describe using lay terms like feeling 'foggy' or unfocused.

Q: How quickly must a patient seek medical help for certain side effects of Flamesan?

Official documentation advises that emergency medical attention is necessary if symptoms of a serious adverse event occur. These symptoms include, but are not limited to, chest pain, difficulty breathing, slurred speech (suggesting a serious cardiovascular event), or bloody/tarry stools and vomiting blood (suggesting serious gastrointestinal bleeding).

Q: Does taking Flamesan affect blood pressure?

Regulatory warnings indicate that NSAIDs, including Flamesan, may lead to the onset of new hypertension (high blood pressure) or worsening of pre-existing hypertension. For patients taking this medication, label information indicates that blood pressure monitoring is necessary.

Q: Do different brands of Flamesan (if generic exists) work exactly the same way?

Generic versions of the active ingredient (Diclofenac) are generally recognized by the FDA as bioequivalent to the brand-name product. However, it is important to note that different formulations of the medicine (e.g., an immediate-release tablet versus an extended-release tablet) are not interchangeable on a milligram-for-milligram basis.

Q: Does Flamesan have any known effects on mood or emotions?

Adverse event reports list changes in emotional state, including depression and anxiety, among the reported side effects associated with the medication.

Q: Is there a generic version of Flamesan currently available?

Yes, the active ingredient in Flamesan, known as Diclofenac, is available in multiple FDA-approved generic forms. These generic versions are considered to be therapeutically equivalent to the brand-name product.

Q: When can a person typically expect Flamesan to start working?

The time until the medication is absorbed and begins to act depends on the specific formulation and whether it is taken with food. Official pharmacokinetic data shows that the onset of absorption is typically delayed by 1 to 4.5 hours after an oral dose when taken with food.

Q: How long does the effect of one dose of Flamesan usually last in the body?

The terminal half-life of the unchanged active ingredient in Flamesan is approximately 2 hours. This half-life is a measure of how quickly the body eliminates the medicine.

Q: Does taking Flamesan cause weight gain or changes in appetite?

Official reports list weight changes and appetite changes (including loss of appetite) as adverse reactions. Furthermore, the medication can cause fluid retention (edema) in some patients, which can lead to an increase in body weight.

Q: Can Flamesan be taken safely with common nutritional supplements or vitamins?

Regulatory sources generally do not contain enough information to definitively state that all complementary medicines, vitamins, and supplements are safe to take with Flamesan. This is because these products are not typically tested for interactions in the same way as prescription medicines.

Q: Does Flamesan interact with birth control pills?

Regulatory information indicates that the active ingredient in Flamesan will not affect the efficacy of common hormonal contraceptives. This includes the combined oral contraceptive pill, the progestogen-only pill, and emergency contraception.

Q: Will Flamesan affect the results of a routine blood test?

Yes, regulatory warnings note that Flamesan can cause an elevation of liver enzymes (such as ALT/AST) in blood tests. Additionally, the official label recommends that patients undergoing prolonged treatment should have their blood count monitored.

Q: Is Flamesan an opioid or addictive medication?

No, Flamesan is not an opioid. It is classified as a Nonsteroidal Anti-Inflammatory Drug (NSAID) and is not listed as a controlled substance by regulatory bodies.

Q: What kind of monitoring tests (like blood work) might be needed while taking Flamesan?

For patients undergoing prolonged treatment, regulatory documents recommend the regular monitoring of several physiological parameters. These include blood tests to check hepatic function (liver tests), renal function (kidney tests), and blood count.

Q: Is there a risk of withdrawal symptoms when stopping Flamesan?

Withdrawal symptoms are not typically listed in the regulatory documents associated with Flamesan. However, a few subjects were documented to have withdrawn from clinical trials due to the development of adverse events.

Q: Does Flamesan affect a person's ability to drive or operate machinery?

Official documentation notes the potential for side effects such as dizziness or drowsiness. Because of this, regulatory information indicates the potential for caution when performing activities that require alertness.

Q: Is it true that Flamesan may increase the risk of sun sensitivity?

Yes, photosensitivity (increased skin sensitivity to sunlight) has been reported as a side effect. The regulatory label specifies that patients using certain topical forms should minimize or avoid sun exposure during therapy.

Q: Are there any known interactions between Flamesan and herbal remedies?

There is not enough information in regulatory documentation to confirm the safety of combining Flamesan with most herbal remedies. Since herbal products are not generally tested for interactions in the same way as prescription medicines, the use of these combinations is not well characterized by regulatory sources.

Q: Why is Flamesan prescription-only?

Oral Flamesan is classified as a prescription-only medication primarily because of the associated higher risk of serious side effects. These risks, including cardiovascular and gastrointestinal complications, require professional oversight for appropriate risk management.

Q: Is the medication suitable for people with diabetes?

Patients with diabetes mellitus are noted in regulatory information to have a significant risk factor for serious cardiovascular events. Treatment initiation requires careful professional consideration, with emphasis on utilizing the lowest effective dose for the shortest duration.

How should Flamesan be stored and disposed of?

How to Store and Dispose of Flamesan

Flamesan (Diclofenac) must be stored at Controlled Room Temperature, which is generally defined as 20 C to 25 C (68 F to 77 F). The medicine must be kept away from excessive heat, moisture, and freezing to maintain its stability. It should remain in its original, closed container and be kept out of the reach of children at all times.

Official Disposal Guidelines

Unused or expired Flamesan should be disposed of using a local drug take-back program when available. If a take-back program is not accessible, the product can be mixed with an undesirable substance, sealed in a container, and discarded in the household trash. It is important to note that certain formulations of this product pose a risk to the aquatic environment and should be handled accordingly.

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

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