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Flogostop (Nimesulide)

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Medically reviewed

Laura Arias

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.

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Overview of Flogostop (Nimesulide)

This section provides a clear, high-level overview of the medicine Flogostop, defining its identity, composition, and general purpose without addressing specific dosages, usage instructions, or safety information.

Property Description
Active ingredient Nimesulide
Form Tablets, Granules for oral suspension, Gel
Pharmacological class Nonsteroidal anti-inflammatory drug (NSAID)
General purpose Symptomatic treatment of pain, inflammation, and fever
Origin Synthetic compound

What Type of Medicine is Flogostop (Nimesulide)?

Flogostop is a medicinal product containing the active ingredient Nimesulide, which is classified as a Nonsteroidal anti-inflammatory drug (NSAID). This unique sulfonanilide derivative is a synthetic compound that operates as a Cyclooxygenase-2 (COX-2) selective inhibitor. This preferential action against the COX-2 enzyme contributes to the medicine's profile, particularly regarding its effect on inflammatory pathways compared to traditional, non-selective NSAIDs. The Nimesulide substance itself is categorized as a sulfonanilide derivative.

Composition and Available Forms of Flogostop

The composition of Flogostop features Nimesulide as the single active ingredient. The product is manufactured for both systemic administration and topical administration, necessitating varied drug forms to suit different application needs. For systemic use, preparations commonly include tablets and granules for oral suspension. A gel formulation, designed for external, topical application, is also available. This availability in different forms, utilizing a solid or aqueous base/vehicle, allows the active substance to be delivered effectively through different routes.

What is the General Purpose of Nimesulide?

The primary general purpose of Nimesulide is the symptomatic treatment of acute discomfort, inflammation, and fever. The therapeutic role is characterized by its distinct physiological actions: providing significant analgesic properties (pain relief), robust anti-inflammatory properties, and effective antipyretic properties (fever moderation). Nimesulide is noted for its relatively rapid onset of action when used to relieve acute discomfort, which differentiates its clinical application from some other medicines in the NSAID class. For the patient, this means the medication assists in managing acute symptoms such as pain associated with dysmenorrhea, or general discomfort and swelling.

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What side effects are possible with Flogostop (Nimesulide)?

Flogostop (Nimesulide) is a Non-Steroidal Anti-Inflammatory Drug (NSAID) whose use is associated with a risk of side effects. It is generally recommended to use the lowest effective dose for the shortest duration possible, not exceeding 15 days, to minimize risks.


Serious Safety Concerns: Liver Toxicity

Nimesulide carries a significant risk of hepatotoxicity (liver damage), which can range from asymptomatic enzyme elevation to severe, life-threatening liver failure requiring transplantation. This risk is the main reason its use is restricted in many countries. Immediate discontinuation and medical consultation are required if symptoms of liver problems occur, such as: persistent nausea, vomiting, loss of appetite, abdominal pain, dark urine, or yellowing of the skin or eyes (jaundice).


Common Side Effects

The most frequently reported side effects affect the gastrointestinal tract and are usually mild and temporary. These may include:

System Affected Common Adverse Reactions
Gastrointestinal Nausea, vomiting, diarrhea, stomach pain, abdominal discomfort
Nervous System Dizziness, headache, drowsiness
Skin Rash, itching

Important Contraindications and Warnings

Nimesulide should not be used in patients with severe liver impairment or a history of hepatotoxic reactions to the drug. It is also contraindicated in those with active gastrointestinal bleeding, peptic ulcer, severe heart failure, severe renal impairment, and in children under 12 years of age. Caution is required in elderly patients and those with pre-existing cardiovascular or kidney conditions. It is also not recommended during the third trimester of pregnancy or while breastfeeding.

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Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents on Nimesulide strictly describe specific clinical manifestations associated with overexposure. Symptoms of a suspected overdose may include gastrointestinal upset, such as nausea, vomiting, and epigastric pain. Effects on the central nervous system are also documented, presenting as drowsiness, lethargy, or somnolence. In severe scenarios, more serious signs like convulsions or coma may occur.

Urgent Medical Action Required

Overdose carries a substantial risk of severe organ system damage. Regulatory authorities emphasize that urgent medical assessment and treatment are necessary due to the potential for life-threatening outcomes, including acute liver injury (potentially progressing to fulminant hepatic failure) and acute renal failure. Immediate medical attention must be sought for any suspected overdose.

Management and Monitoring

Management of a Nimesulide overdose is defined as symptomatic and supportive, as no specific antidote is known. Procedures may include the administration of activated charcoal and gastric lavage shortly after ingestion. Hospital monitoring is required to assess vital signs and to track key laboratory parameters, including hepatic and renal function. The official labeling notes that the elderly population may be particularly susceptible to serious complications following overexposure.

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Therapeutic Uses of Flogostop (Nimesulide)

What Flogostop (Nimesulide) Treats: Main Uses and Benefits

Flogostop is commonly used in therapeutic domains involving certain distressing symptoms, where it may assist in easing symptoms related to physical discomfort by addressing pain, inflammation, and fever. Its systemic use is generally restricted to the management of short-term pain and primary dysmenorrhoea (menstrual pain). It is relevant for easing symptoms related to inflammatory states, such as swelling, and contributing to the management of elevated body temperature.


Symptom Management and Therapeutic Support

The medicine is relevant in conditions characterized by episodic or fluctuating symptom patterns, providing supportive management for heightened discomfort. It is commonly used to help with symptoms linked to inflammatory or irritative states, including osteoarthritis flare-ups, post-traumatic pain from sprains, and discomfort following minor dental procedures. Using the medication in these acute situations:

“contributes to improved comfort during periods of heightened symptoms and may assist with maintaining comfort and stability.”

Flogostop is applied across domains where additional symptomatic support is needed, assisting with the overall burden of symptoms that interfere with daily comfort.

Quick Fact: Relief for Acute Discomfort
The supportive benefit is related to easing symptoms that require analgesic, anti-inflammatory, and antipyretic support, commonly used to help manage acute and episodic symptoms.

Regulatory References

  1. European Medicines Agency referral conclusions on Nimesulide
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Eligibility and Restrictions for Use

Eligibility and Contraindications for Flogostop (Nimesulide)

Official regulatory guidelines strictly define the populations eligible to use Nimesulide and those for whom it is absolutely prohibited. The medicine is primarily authorized for use in adults and adolescents aged 12 years and older, and its use is restricted to second-line treatment only, with a maximum duration of 15 days.


Absolute Contraindications

Population or Condition Regulatory Status
Children under 12 years Contraindicated
Third Trimester of Pregnancy Contraindicated
Lactation (Breastfeeding) Contraindicated
Hepatic Impairment (any degree) Contraindicated
Severe Renal Impairment Contraindicated
Severe Heart Failure Contraindicated
Active GI Ulceration or Bleeding Contraindicated

Other Restrictions

  • Pregnancy (First/Second Trimesters): Use is not recommended.
  • Fertility: Use is not recommended in women attempting to conceive.
  • Older Adults: While no dosage reduction is necessary, enhanced clinical monitoring is advised.
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What should I know about interactions with other medicines?

The regulatory interaction profile of Flogostop (Nimesulide) is defined by its potential to affect both the metabolism and functional effects of co-administered medicines. The official documentation identifies two primary areas of concern: metabolic interference and pharmacodynamic potentiation. The use of Nimesulide is formally contraindicated with alcohol and other potentially hepatotoxic substances.

Interacting Substance Categories Documented Outcome or Restriction
Oral Anticoagulants (e.g., Warfarin) Increased risk and severity of bleeding and hemorrhage; requires close monitoring.
Lithium Reduced clearance, potentially leading to elevated plasma concentrations and toxicity.
Diuretics/ACE/AIIA Inhibitors Risk of deterioration of renal function and reduced efficacy of the co-administered agent. Caution required in susceptible renal or cardiac patients.
Methotrexate May cause increased serum level and toxicity. Caution is mandated if used less than 24 hours before or after Nimesulide.

This profile is structured on the basis that Nimesulide is an officially recognized CYP2C9 inhibitor, which may lead to increased exposure of co-administered CYP2C9 substrates. The potentiation of bleeding risk when combined with anti-platelet agents or SSRIs is also officially noted.

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Mechanism of Action

How Flogostop (Nimesulide) Works

Flogostop (Nimesulide) is a non-steroidal anti-inflammatory drug (NSAID) that operates by targeting key enzymatic and signaling pathways involved in eicosanoid synthesis.


Selective Cyclooxygenase-2 (COX-2) Inhibition

The primary mechanistic domain of Nimesulide is the inhibition of the COX-2 enzyme. COX-2 is an inducible enzyme that catalyzes the conversion of arachidonic acid into pro-inflammatory mediators known as prostaglandins. By inhibiting this enzyme, Nimesulide significantly suppresses the synthesis of these key signaling molecules, resulting in the diminished biosynthesis of pro-inflammatory prostaglandins. This action selectively modulates a pathway associated with heightened physiological responses in affected tissue.


Modulation of Inflammatory Signaling Cascades

Beyond COX-2 inhibition, Nimesulide also engages mechanisms that influence other elements of associated signaling cascades. It suppresses the release of histamine from specific cells (mast cells and basophils). Furthermore, it can inhibit the synthesis of platelet-activating factor (PAF) and modulate the production of specific inflammatory cytokines (like TNF-alpha and interleukins). These actions modify early molecular steps, influencing feedback regulation within those signaling pathways.

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Dosage and Administration Information

Systemic and Topical Administration

Nimesulide is administered primarily via the oral route for systemic treatment, available as tablets, capsules, or granules for suspension. It is also supplied through the topical route as a gel for external application. The official protocol for systemic use establishes strict parameters for dosing and duration, requiring use at the minimum effective dose for the shortest time necessary.

Systemic Usage Protocol

Parameter Official Instruction
Dose and Frequency The standard adult systemic dose is 100 mg, taken twice daily (bid), resulting in a maximum daily intake of 200 mg.
Timing Oral systemic forms must be taken after meals to standardize absorption conditions.
Duration Limit The treatment course must be restricted to the shortest possible duration, with a maximum allowable period of 15 days for continuous use.
Preparation Granules for oral suspension require dissolution in a glass of water prior to administration.

Population-Specific Administration Rules

Systemic use is governed by explicit age and health restrictions. Systemic Nimesulide administration is contraindicated in children under 12 years of age. Administration is also prohibited in patients with severe hepatic or severe renal impairment. For older adults and adolescents (12 to 18 years), no dosage adjustment from the standard 100 mg twice-daily regimen is necessary, provided no other restrictive health factors are present.

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Recent Clinical Evidence

Research evidence / Overview of Studies for Flogostop (Nimesulide)


Evidence for Short-Term Pain Management

The clinical research for Flogostop (Nimesulide) has primarily focused on studies related to acute, short-term symptoms. The main study design used was Randomized Controlled Trials (RCTs). In these trials, the medicine was evaluated in settings comparing it against an inactive substance (placebo) or against other common nonsteroidal anti-inflammatory drugs (NSAIDs). The studies were applied in research contexts involving fluctuating or unstable symptoms, such as those experienced after certain minor procedures or acute musculoskeletal episodes.

Researchers monitored patient-reported outcomes describing perceived discomfort, specifically focusing on how symptom intensity changed over time. Trials exploring Nimesulide's profile against an inactive substance (placebo) reported patterns in the measured pain scores between the groups. Studies comparing Nimesulide against other standard pain medicines described that the measured pain outcomes for the different treatments were observed to be similar. Research explored short-term symptom changes, and some studies monitored how quickly individuals reported a measurable initial change in their discomfort after taking a single dose.


Evidence for Primary Dysmenorrhoea

Flogostop was studied in research settings involving Primary Dysmenorrhoea, which describes symptoms related to menstruation that are not caused by an underlying medical condition. This is a condition presenting with cycles of stability and flare-ups, making it relevant in trials assessing short-term or episodic symptom patterns. The evidence base here consists of Randomized Controlled Trials (RCTs) and Systematic Reviews that combine findings from multiple trials.

Studies monitored outcomes related to physical discomfort, specifically measuring changes in symptom intensity and the patient-reported degree of relief over the course of the menstrual period. Findings describe patterns observed in the studies where symptom intensity scores were different when Nimesulide was compared to a placebo. While research provides context about short-term changes in symptom intensity, comparative evidence is lacking sufficient detail to establish whether Nimesulide has a consistently greater or lesser measured effect than every other individual NSAID included in the comparisons.


Research on Follow-up Duration and Long-Term Outcomes

A key feature of the clinical evidence for Nimesulide is the short duration of observation. All systemic use is strictly limited to acute treatment periods, and the research observation period was restricted to 15 days. Consequently, the clinical research available is derived predominantly from short-term study scenarios, focusing on episodes where symptoms become more noticeable. Because of this necessary focus, long-term effects are not fully established. The available evidence does not contribute to understanding symptom patterns over months or years, reflecting the follow-up durations were limited.


What is Still Uncertain About the Research Base

Despite the existence of multiple trials, the evidence landscape has several limitations that scientific bodies have noted. Evidence is limited exclusively to short-term, acute use, as chronic treatment with systemic Nimesulide is not covered by the available data. Follow-up durations were limited, typically lasting less than two weeks, which is a key restriction of the research. Additionally, subgroup findings are uncertain because the research was not designed to specifically analyze outcomes across all possible specific patient groups, such as the elderly or those with complex existing conditions. Studies help show what has been observed so far, and evidence highlights what is known — and what is still uncertain.

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Frequently Asked Questions (FAQ)

Common questions about Flogostop (Nimesulide) (FAQ)

Q: How quickly does Flogostop start working after I take it?

Official product information notes the active ingredient, Nimesulide, has been associated with a rapid onset of action, especially for acute symptoms. However, it does not typically specify an exact time frame (such as a number of minutes) for when the pain relief may be felt.

Q: What are the signs that Flogostop is causing a serious reaction?

Immediate discontinuation and medical consultation is required if symptoms of potential liver toxicity occur. These serious symptoms include persistent nausea, vomiting, loss of appetite, abdominal pain, dark urine, or yellowing of the skin or eyes (jaundice).

Q: Are there any common supplements that interact with Flogostop?

Official information warns of potential interactions with medicines metabolized by the CYP2C9 enzyme or those that increase the risk of bleeding. Caution is therefore advised regarding supplements known to impact these particular metabolic or blood-clotting pathways.

Q: Is it safe to drink alcohol in moderation while taking Flogostop?

Official product information strictly states that concurrent use with alcohol is formally contraindicated. This restriction is due to an increased potential risk of liver reactions (hepatotoxicity) when Flogostop is combined with alcohol.

Q: Can elderly patients safely use Flogostop for chronic joint pain?

Flogostop's use, even in the elderly population, is strictly restricted to the shortest possible duration, with a maximum limit of 15 days. Therefore, it is not indicated for chronic conditions, such as long-term joint pain.

Q: Is it normal to feel a bit dizzy when first starting Flogostop?

Dizziness and drowsiness are listed as common side effects associated with Nimesulide in the official product information. Experiencing these effects is a known and documented possibility, especially when first starting treatment.

Q: Are there any long-term effects of taking Flogostop occasionally?

The clinical evidence for Flogostop is derived primarily from short-term study scenarios, with observation periods generally limited to 15 days. Therefore, the long-term effects and safety of even occasional use have not been fully established or documented.

Q: Does Flogostop thin the blood, similar to some other pain medicines?

Official documentation notes that combining Flogostop with certain blood thinners (oral anticoagulants) can increase the risk of bleeding and hemorrhage. This interaction indicates that the medicine can influence the body's natural blood clotting process.

Q: What does the research say about Flogostop's effectiveness for menstrual cramps?

Nimesulide is formally indicated for the symptomatic treatment of primary dysmenorrhoea, which is the medical term for menstrual cramps.

Q: Does Flogostop affect sleep patterns or cause drowsiness?

Official product information lists drowsiness as a common adverse reaction that can affect the nervous system. The documentation generally focuses on this sedative effect rather than on overall sleep patterns or insomnia.

Q: What should I do if I forget to take a dose of Flogostop?

Standard advice from patient leaflets is to skip the forgotten dose. Patients should then take the next scheduled dose at the regularly appointed time, and a double dose must not be taken to compensate for the missed one.

Q: Can Flogostop cause swelling in the ankles or feet?

Fluid retention, or edema (swelling), is a documented possible adverse effect of Nimesulide, as is common with other NSAIDs. This effect may sometimes be observed in areas such as the ankles or feet.

Q: What is the safety profile of Flogostop compared to other NSAIDs in long-term use?

Clinical evidence for Flogostop is strictly limited to short-term use, typically a maximum of 15 days. Therefore, the safety profile of the medicine for long-term use, and its comparison to other NSAIDs over extended periods, has not been fully established in regulatory research.

Q: Does Flogostop affect blood sugar levels?

Official interaction warnings recommend caution when Flogostop is used alongside hypoglycaemic products (anti-diabetic medicines). This indicates a possible need for monitoring when both are used, due to the potential for interaction with glucose regulation.

Q: What are the signs that Flogostop isn't working for my pain?

Official regulatory documentation advises that treatment should be discontinued if no benefit is observed within the acute treatment period. A lack of measurable change or improvement in acute symptoms may be a reason to consult a healthcare professional.

Q: How effective is Flogostop for toothaches or dental pain?

Nimesulide is formally indicated for the symptomatic treatment of acute pain. This indication can apply to pain experienced after dental procedures.

Q: Do patients with asthma have a higher risk with Flogostop?

Flogostop is formally contraindicated for use in patients with a history of hypersensitivity reactions, such as bronchospasm or asthma, in response to aspirin or any other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs).

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How should Flogostop (Nimesulide) be stored and disposed of?

Storage and Disposal Requirements for Flogostop (Nimesulide)

The official storage and disposal guidelines for Nimesulide are based on regulatory documentation to ensure product integrity and environmental safety. Storage requires the medication to be kept in a cool, dry, and well-ventilated place, typically within the controlled room temperature range (e.g., 20 C to 25 C). The product must remain in its tightly closed, original packaging and be protected from moisture and incompatible substances, such as strong oxidizing agents.

For child safety, the medicine must be stored locked up and out of the reach and sight of children. Disposal must follow official regulatory rules: the medicine and its container must be disposed of via an approved waste disposal plant or official collection program. It is mandated to avoid discharge into drains or the general environment.

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

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