Nimesel

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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 Nimesel

Quick Facts

Property Description
Active ingredient Nimesulide
Form Tablet, Capsule, Granules, Gel
Pharmacological class Non-steroidal Anti-inflammatory Drug (NSAID)
Common use Analgesic, Antipyretic, Anti-inflammatory
Origin Synthetic organic compound

What Type of Medicine is Nimesel and Its Composition?

Nimesel is a synthetic pharmaceutical preparation whose active ingredient is Nimesulide, which is fundamentally classified as a Non-steroidal Anti-inflammatory Drug (NSAID). The drug is chemically defined as a compound belonging to the sulfonanilide class. Its distinctive feature among its peers is that Nimesulide acts as a relatively selective Cyclooxygenase-2 (COX-2) inhibitor, a mechanism noted for its ability to target inflammatory mediators more directly than non-selective NSAIDs. The active substance is classified among non-steroidal anti-inflammatory and anti-rheumatic products. This specific classification establishes its core identity as an agent developed to counteract pain, inflammation, and fever through a targeted biochemical mechanism.


Physical Forms and General Purpose

Nimesel is available in several pharmaceutical preparations, including tablets, capsules, and granules for oral suspension for oral administration, as well as a gel for topical use. The overarching general purpose of the medicine is to provide symptomatic relief through its triple action: it is analgesic (relieving pain), antipyretic (reducing fever), and anti-inflammatory (diminishing inflammation). While it is typically a single-ingredient product, its granules for oral suspension formulation offers a distinctive form of rapid administration, contrasting with standard tablet forms.

Nimesulide formulations are designed to address acute pain and primary dysmenorrhea. The established profile of Nimesulide as a relatively COX-2 selective NSAID identifies its mechanism for pain and inflammation relief. The drug works by selectively targeting the key pathway responsible for the body's pain and inflammatory response.

Regulatory References

  1. European Medicines Agency (EMA) Nimesulide Referral

What side effects are possible with Nimesel?

The safety profile for Nimesel, containing the active ingredient Nimesulide, is defined by regulatory bodies through specific classifications of adverse reactions and mandated usage restrictions. This information is classified by frequency and by the body system affected, ensuring a standardized description of potential risks.

Documented Adverse Reaction Frequencies

Adverse reactions are classified according to frequency in regulatory documents:

  • Common: Reactions observed most frequently, including diarrhoea, nausea, vomiting, and reversible increases in liver enzyme values.
  • Uncommon: Less frequent effects, such as dizziness, hypertension, gastritis, and various skin reactions like pruritus and rash.
  • Rare/Very Rare: Infrequent but serious documented effects include anaemia, haemorrhage, and severe allergic reactions. The most serious adverse reactions, classified as Very Rare, primarily involve the hepatobiliary system (hepatitis, fulminant hepatitis, liver failure) and gastrointestinal tract (bleeding, ulceration, perforation).

Official Safety Constraints

Regulatory documents highlight population-specific and duration-related safety considerations. The use of Nimesulide is strictly limited to the shortest possible duration, with a maximum treatment period of 15 consecutive days mandated to mitigate the documented risk of serious liver toxicity.

The medication is contraindicated in individuals with pre-existing severe hepatic failure, active liver disease, severe renal impairment, or a history of recurrent gastrointestinal bleeding or ulceration. Older adults are officially noted to have an increased frequency of adverse reactions, particularly concerning the gastrointestinal tract and renal function, requiring enhanced regulatory caution. These official constraints ensure the medicine is used within its narrowly defined risk-mitigation framework.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Nimesel (Nimesulide) overdose describes the manifestations common to Non-steroidal Anti-inflammatory Drugs (NSAIDs), emphasizing the need for immediate supportive management and clinical monitoring.

Element Official Regulatory Statement
Documented Manifestations Overdose symptoms are typically non-severe, including somnolence (drowsiness), lethargy, nausea, vomiting, and epigastric pain (upper abdominal discomfort).
Severe Outcomes Potentially life-threatening outcomes are documented, such as gastrointestinal bleeding, acute renal failure, hypertension, and, rarely, coma or anaphylactoid reactions.
Emergency Action Required Seek medical attention immediately for any severe or worrying symptoms, particularly those indicating a cardiovascular event, like chest pain, sudden weakness, or slurred speech.
Antidote and Treatment No specific antidote is known for Nimesulide. Management is defined by regulatory guidance as symptomatic and supportive treatment. For a recent overdose, procedures like gastric lavage and administration of activated charcoal may be used to limit absorption.
Monitoring and Risk Notes Appropriate clinical monitoring of renal and hepatic function is advised due to the risk of delayed systemic complications. The elderly population is specifically noted to face an increased risk of severe adverse reactions.

This regulatory framework mandates that all management relies upon supportive measures and monitoring, underscoring the potential for serious complications that necessitate urgent medical evaluation when an overdose is suspected.

Therapeutic Uses of Nimesel

Nimesel is commonly used across conditions presenting with acute episodes where short-term symptomatic assistance is needed. Its use is relevant for easing certain distressing symptoms across primary therapeutic areas. The medication may assist in addressing symptom clusters that become intense or disruptive.

It is used for managing pain and inflammation associated with minor soft-tissue injuries and post-procedural discomfort, as well as the recurrent, acute cramping and pain of primary dysmenorrhea. Furthermore, Nimesel is considered relevant for managing acute flares of pain associated with osteoarthritis and systemic symptoms like fever. Applied during phases of increased distress or discomfort, this supportive relief is intended to assist in managing symptom fluctuations and maintaining functional stability.

Quick Fact: Relief for Pain, Inflammation, and Fever

“The primary therapeutic benefit is to provide supportive relief during difficult episodes by easing distress and contributing to easing the overall symptom load.”

Regulatory References

  1. European Medicines Agency (EMA) Summary

Eligibility and Restrictions for Use

The use of Nimesulide (Nimesel) is strictly regulated by official health authorities and is generally limited to adults for short-term treatment only, typically not exceeding 15 days.

Populations for whom use is Contraindicated

Nimesulide is absolutely contraindicated and must not be used in the following populations and conditions:

  • Children under 12 years of age.
  • Patients with severe hepatic impairment (active liver disease) or a history of liver reactions to Nimesulide.
  • Patients with severe renal impairment (creatinine clearance < 30 mL/ min) or severe heart failure.
  • Active peptic ulceration or a history of recurrent ulcers or gastrointestinal bleeding.
  • Third trimester of pregnancy and in breastfeeding women.
  • Patients with fever or flu-like symptoms or a history of alcoholism or drug addiction.

Eligibility-Related Restrictions

The medicine is not recommended for women who are actively trying to conceive. Use is restricted to adults and adolescents over 12 years; older adults require careful monitoring due to increased risk.

What should I know about interactions with other medicines?

Nimesel Interactions with other medicines and products

Contraindicated and High-Risk Combinations

The official regulatory profile for Nimesulide details several key interactions that establish requirements for co-administration or prohibition. Co-administration with certain substances is formally restricted due to an increased risk of toxicity. Alcohol is contraindicated because of the documented risk of increased hepatotoxicity. The simultaneous use of other Non-steroidal Anti-inflammatory Drugs (NSAIDs) is also contraindicated due to the potential for additive gastrointestinal toxicity and bleeding. This medicine is not recommended for co-administration with oral anticoagulants like Warfarin, or with anti-platelet agents, due to the increased risk of bleeding complications. Co-administration with Corticosteroids carries a heightened, documented risk of gastrointestinal ulceration.

Pharmacokinetic and Exposure-Altering Interactions

Nimesulide is documented to inhibit the Cytochrome P450 2C9 (CYP2C9) enzyme. This interaction mechanism may cause an increase in the plasma concentrations of other medicines that are CYP2C9 substrates. Nimesulide reduces the renal clearance of Lithium, which can result in elevated plasma levels and the risk of toxicity. Caution is required if administered less than 24 hours before or after Methotrexate, as this timing may increase Methotrexate's serum levels.

Other Pharmacodynamic Interactions

Nimesulide may reduce the effectiveness of diuretics and other antihypertensive agents, such as Furosemide, by influencing renal function. Due to effects on renal prostaglandins, the combination with Cyclosporines carries a documented potential to increase their nephrotoxicity. Elderly patients are officially noted as having an increased susceptibility to interactions related to bleeding risk and effects on renal function.

Mechanism of Action

Nimesel is a non-steroidal anti-inflammatory drug (NSAID) of the sulfonanilide chemical class. Its primary mechanism involves the inhibition of prostaglandin biosynthesis by interfering with the cyclooxygenase (COX) enzyme, exhibiting preferential activity toward the COX-2 isoform.

Inhibition of COX-2 reduces the catalytic conversion of arachidonic acid into pro-inflammatory prostaglandins. This action modulates the concentration of lipid mediators that perpetuate cellular signaling during inflammatory responses.

Furthermore, nimesulide engages in secondary mechanistic actions. These include the interference with the release of chemical mediators, such as histamine and proteolytic enzymes, from mast cells and neutrophils. It also exerts an inhibitory effect on the synthesis of platelet-activating factor (PAF) and certain metalloproteinases. This collective pharmacodynamic profile modifies the enzymatic and cellular cascades that propagate a physiological inflammatory reaction.

Dosage and Administration Information

How Nimesel is Used

Nimesel (Nimesulide) is utilized based on established administration protocols for both systemic and local treatment. The routes are oral for systemic action, available as tablets, capsules, or granules, and topical for local action via a gel formulation.


Systemic Oral Administration

The standard dose for adults and adolescents aged 12 to 18 is 100 mg per single administration. The required frequency is twice a day (bid), establishing a maximum daily dose of 200 mg. It is a common administration guideline that the oral formulation is taken after a meal (postprandially). Dosage adjustments are generally not required for older adults or in cases of mild to moderate renal impairment.

Treatment adheres to the principle of using the minimum effective dose for the shortest duration possible. The maximum duration for any single systemic course is limited to 15 days.


Local Topical Administration

For local application, the Nimesel gel is typically administered 2 to 3 times daily. The administration protocol requires the product to be applied in a thin layer and massaged thoroughly until completely absorbed into the skin. The course of local treatment should similarly not exceed a period of 15 days.

This structured approach defines a time-bound usage model.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Nimesel

Evidence for Use in Acute Pain and Soft-Tissue Injuries

The clinical evaluation of Nimesel for short-term pain relief was evaluated primarily through short-term randomized controlled trials (RCTs) and subsequent meta-analyses. These trials compared outcomes in different treatment groups, including placebo and other non-steroidal anti-inflammatory drugs (NSAIDs). Researchers used these trials to examine patient-reported outcomes describing perceived discomfort and symptom intensity in adults experiencing acute inflammatory pain. The findings describe patterns observed in the studies that were related to symptom changes observed in the active group compared to the placebo group. Research has explored the medicine’s use for periods generally limited to 15 days or less, reflecting the regulatory constraints on its use.

Evidence for Managing Primary Dysmenorrhea

For the acute pain and cramping associated with primary dysmenorrhea (menstrual pain), research has examined outcomes related to episodic or acute changes. The evidence base includes RCTs that were specifically designed to monitor pain intensity during the symptomatic phase of the menstrual cycle. Studies report how symptoms evolved in the observed populations during the acute episode, often finding patterns related to measured changes in pain intensity when compared to placebo. However, there is limited information for long-term outcomes regarding the repeated use of this medicine over many cycles.

Overview of Study Duration and Follow-up

The available evidence focuses on outcomes related to acute symptom changes over defined time intervals, typically involving short treatment durations. Consequently, the long-term effects are not fully established by the efficacy research. Data are still emerging regarding the durability of any observed changes when the medicine is used repeatedly or continuously over extended periods.

Identified Evidence Gaps and Areas of Research Uncertainty

The primary research limitation frames the authorized use around acute episodes; thus, there is limited information for long-term outcomes or repeated use for chronic conditions. Furthermore, the overall evidence landscape has led to divergent regulatory statuses across international health authorities, reflecting varied scientific interpretations of the short-term efficacy findings when balanced against the post-marketing surveillance data of the NSAID class.

Key Studies & References

  1. Nimesulide in dysmenorrhoea (Review of efficacy, onset of action, and prostaglandin effects in menstrual pain)

Frequently Asked Questions (FAQ)

Common questions about Nimesel (FAQ)

Q: How quickly does Nimesel typically start working after it is taken?

Official documents and studies examining Nimesel's characteristics describe the medicine as having a rapid onset of action. This indicates that the pain-relieving and anti-inflammatory effects are described as beginning relatively soon after administration.


Q: How long do the pain-relieving effects of a single dose of Nimesel typically last?

The official administration protocol for Nimesel is typically twice a day (bid). This schedule, outlined in regulatory documents, is consistent with a period of effectiveness of up to approximately 12 hours.


Q: Are there any reported early signs of potential liver issues to look out for while taking Nimesel?

Adverse reaction documents classify severe liver injury as Very Rare. The official guidance describes conditions where immediate discontinuation of treatment may be necessary, such as the appearance of non-specific signs of potential liver injury. These signs can include symptoms like unusual fatigue, persistent nausea, vomiting, or flu-like symptoms.


Q: What are the official warnings about using Nimesel during pregnancy?

Official product information states that Nimesulide is not recommended for use throughout pregnancy. It is strictly contraindicated, meaning it must not be used, during the third trimester of pregnancy.


Q: Is Nimesel generally suitable for use while breastfeeding?

The use of Nimesulide is contraindicated in women who are breastfeeding. This restriction is mandated because of the potential for the active substance to pass from the mother into the breast milk.


Q: Is Nimesel ever recommended for use in children or adolescents?

The medicine is strictly contraindicated for use in children under 12 years of age. For adolescents between the ages of 12 and 18 years, official regulatory information indicates that no dosage adjustment is typically required compared to adults.


Q: Does Nimesel interact with over-the-counter painkillers that contain Paracetamol (Acetaminophen)?

Combining Nimesel with other painkillers, including those containing Paracetamol (Acetaminophen), is not recommended. This caution exists due to the risk of increased side effects and a potential risk of Paracetamol overdose.


Q: Can Nimesel affect the blood pressure-lowering effect of hypertension medicines?

Official information indicates that Nimesulide may reduce the effectiveness of diuretics and other antihypertensive agents. This potential effect is noted to occur through an influence on renal function.


Q: Why do some Nimesel products contain Paracetamol/Acetaminophen in combination?

Combination products are available to utilize the effects of both active substances. This approach uses Nimesulide for its anti-inflammatory and analgesic (pain-relieving) action, combined with Paracetamol for its analgesic and antipyretic (fever-reducing) properties, aiming for comprehensive pain relief.


Q: What steps should a patient take if they miss a scheduled dose of Nimesel?

Regulatory guidance describes that a missed dose is taken as soon as remembered, unless it is almost time for the next scheduled dose. Regulatory guidance also explicitly states that a patient should never take a double dose to make up for a missed one.


Q: Are there specific warnings related to Nimesel use in patients with asthma?

Regulatory documents indicate that Nimesulide, similar to other NSAIDs, is associated with a risk of exacerbation of asthma (making asthma worse). Official warnings note that patients with a history of asthma are a population requiring caution for use.


Q: What is the process for reporting side effects experienced while taking Nimesel?

Patients are advised to report any suspected side effects or adverse reactions directly to their national health regulatory authority, often through official systems. These systems, such as the Yellow Card scheme in the UK, exist to monitor the safety of medicines.


Q: How does Nimesel compare to Diclofenac in terms of its mechanism of action?

Nimesel is classified as a relatively selective Cyclooxygenase-2 ( COX-2) inhibitor, meaning it primarily targets the enzyme that causes inflammation. Diclofenac is generally described as a non-selective NSAID, meaning Nimesel targets the inflammatory pathway less specifically.


Q: Are there any known interactions between Nimesel and antacids?

Official regulatory documents advise caution regarding a potential interaction between Nimesulide and certain medications, including antacids.


Q: Is Nimesulide considered an alternative if a person has had an allergic reaction to other NSAIDs?

Official patient information lists allergy to any other NSAID as a condition that must be noted. Evidence suggests there is a potential for cross-reactivity with Nimesulide in patients who have reacted to other NSAIDs.


Q: Are headaches a potential side effect reported with Nimesel?

According to the summary of product characteristics and adverse reaction listings, headache is listed as a reported side effect of Nimesulide.


Q: What are the official guidelines regarding the disposal of unused Nimesel medication?

Unused or expired Nimesulide must be disposed of in accordance with local pharmaceutical waste requirements. It should officially not be discarded via routine household waste or wastewater.


Q: Is there a maximum number of consecutive days Nimesel should be taken according to European guidelines?

European regulatory guidelines state that the maximum treatment duration for any single systemic course of Nimesel is strictly limited to 15 consecutive days.


Q: Does Nimesulide work by being a 'selective' inhibitor?

Yes, Nimesulide is described in regulatory documents as a relatively selective Cyclooxygenase-2 ( COX-2) inhibitor, meaning it is designed to primarily target the enzyme that increases during inflammation.


Q: What are the components or active ingredients in Nimesel products?

The primary active ingredient is Nimesulide. The full list of inactive ingredients, known as excipients, is included in the specific patient information leaflet for the particular formulation being used.


Q: Can Nimesel interact with lithium or methotrexate?

Regulatory documents indicate that Nimesulide can increase the plasma concentration of Lithium and potentially increase the serum levels of Methotrexate, requiring caution and/or monitoring if administered together.


Q: Is it normal to experience increased sweating or anxiety after taking Nimesel?

While increased sweating is not explicitly listed in common classifications, side effects such as nervousness have been reported in the adverse reaction listings for Nimesulide.

How should Nimesel be stored and disposed of?

How to Store and Dispose of Nimesulide (Nimesel)

Storage Requirements

Nimesulide must be stored according to official regulatory requirements to maintain product stability and integrity. The medicine must be kept at a temperature not exceeding 30°C. Protection from light and moisture is mandatory, requiring the product to be stored in its original package with the container tightly closed.

All Nimesulide products must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired Nimesulide must be disposed of in accordance with local pharmaceutical waste requirements. The product should not be disposed of via wastewater or routine household waste, except when following specific governmental guidelines, such as the US FDA's recommendation to mix with an unpalatable substance, seal, and place in the trash if a drug take-back program is unavailable.

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

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