Нимесулид

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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 Нимесулид

What is Нимесулид? (Expert Overview)

Property Description
Active ingredient Nimesulide
Form Tablet, capsule, oral granules, gel, suppository
Pharmacological class Non-Steroidal Anti-Inflammatory Drug (NSAID)
General purpose Symptomatic relief from pain, inflammation, and fever
Origin Synthetic sulfonamide derivative

Classification and Chemical Profile

Нимесулид is the International Nonproprietary Name (INN) for a synthetic medicinal compound classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). The active substance, Nimesulide, is specifically a methanesulfonanilide, placing it within the sulfonamide chemical group. A key differentiating feature is its mechanism as a selective Cyclooxygenase-2 (COX-2) inhibitor, meaning the drug is designed to preferentially target the enzyme primarily responsible for initiating the inflammatory response. This action distinguishes it from non-selective NSAIDs.

Core Mechanism and General Purpose

The core purpose of Nimesulide is to provide effective symptomatic relief by exerting its triple actions: analgesic (pain-relieving), anti-inflammatory (reducing swelling), and antipyretic (fever-reducing). These effects are achieved primarily by inhibiting the synthesis of prostaglandins, which are the local chemical mediators of pain and inflammation. The drug is clinically recognized for a relatively rapid onset of analgesic action, often used for conditions involving acute pain and inflammatory symptoms. Furthermore, its pharmacological profile includes supplementary antioxidant properties, an attribute not universally shared by all compounds in the NSAID class.

Available Pharmaceutical Forms and Composition

Nimesulide is manufactured as a single-ingredient product in diverse dosage form(s) for various routes of administration. Systemic relief is facilitated by oral forms, such as tablets and rapidly dissolving granules for oral suspension, as well as suppositories for rectal use. For localized management of discomfort, it is also available as a topical gel for cutaneous application. The final composition of all preparations involves the active Nimesulide ingredient combined with necessary pharmaceutical vehicles to ensure its stability and targeted delivery.

Regulatory References

  1. NIH: Cyclooxygenase-2 Inhibitors

What side effects are possible with Нимесулид?

Possible Side Effects and Safety Information

Nimesulide's safety profile is defined by a restricted benefit-risk balance, primarily due to the risk of hepatotoxicity (liver injury). It is not approved in all countries, and where approved, its use is typically limited and carefully monitored by regulatory authorities like the European Medicines Agency (EMA).


Key Serious and Clinically Significant Adverse Reactions

System-Organ Class Serious Adverse Reaction (Documented)
Hepatobiliary Disorders Acute liver injury, including fulminant hepatic failure (rare, but can be fatal or require liver transplantation).
Gastrointestinal Disorders Gastrointestinal ulceration, bleeding, and perforation (class effect of NSAIDs).
Cardiac and Vascular Disorders Increased risk of serious cardiovascular events, such as myocardial infarction and stroke (class effect of NSAIDs).
Renal and Urinary Disorders Acute renal dysfunction.

Frequency of Liver Injury: The risk of severe, clinically apparent liver injury is generally considered rare (estimated at approximately 1 in 50,000 users). Milder, transient elevations in liver enzymes are less frequent than with some other non-steroidal anti-inflammatory drugs.


Safety Restrictions and Contraindications

Regulatory restrictions are in place to minimize hepatotoxicity risk:

  • Duration Limit: Systemic use is strictly limited to a maximum of 15 consecutive days of treatment.
  • Contraindications: The medicine is formally contraindicated in patients with any pre-existing hepatic impairment, a history of active gastrointestinal ulceration or bleeding, and in children under 12 years of age.
  • Discontinuation: Treatment must be stopped immediately if symptoms suggestive of liver distress appear (e.g., loss of appetite, persistent fatigue, dark urine, or abnormal liver function tests) and must not be restarted.

Like all NSAIDs, Nimesulide may also cause more common side effects affecting the gastrointestinal system (e.g., nausea, diarrhea, stomach discomfort) and the nervous system (e.g., dizziness, headache).

Overdose and Emergency Response

Overdose and when to seek help

The official overdose profile for Nimesulide is characterized by common, self-limiting symptoms and the potential for rare, severe organ toxicity as documented in regulatory information.

Feature Official Regulatory Statement
Documented Manifestations Symptoms following overdose are typically limited to lethargy, drowsiness, nausea, vomiting, and epigastric pain. Other documented signs include somnolence and diarrhea.
Severe Systemic Outcomes Overdose may rarely result in acute liver failure (severe hepatic reactions, sometimes fatal) and major organ system effects such as acute renal failure, convulsions (seizures), coma, and gastrointestinal bleeding.
Population Notes Elderly patients are particularly vulnerable to adverse effects, including impairment of hepatic and renal function, leading to increased risk of severe toxicity.

Emergency Actions and Management

Immediate medical attention must be sought if an overdose is suspected or if the patient exhibits any severe symptoms, such as significant mental status change or seizure activity. Management is defined by regulatory bodies as being symptomatic and supportive. There is no specific antidote known for Nimesulide toxicity. Procedures that may be considered include gastric lavage or the administration of activated charcoal if the ingestion is large and recent. Monitoring of renal and hepatic function is required following a large overdose.

Therapeutic Uses of Нимесулид

What Нимесулид Treats: Main Uses and Benefits

The medication is commonly utilized for short-term symptomatic support and is considered relevant in clinical settings that involve acute or unstable symptom patterns.

It is used across domains where additional symptomatic support is needed, primarily for conditions presenting with acute episodes like soft tissue injuries (strains or sprains), dental procedures, and the painful inflammation associated with osteoarthritis. It is also applied in situations involving certain distressing symptoms, notably the intense cramping of primary dysmenorrhea (menstrual pain) and the discomfort from systemic fever and generalized aches.

The drug assists with symptom management by addressing these clusters, and the resulting patient benefit is clear: “It contributes to easing the overall symptom load and supports improved day-to-day comfort during symptomatic periods.” This provides supportive relief when symptoms interfere with routine activities.

Quick Fact: Relief for Acute Pain The medication is commonly used to help with supportive relief for pain, inflammation, and fever associated with short-term, acute episodes.

Regulatory References

  1. European Medicines Agency overview

Eligibility and Restrictions for Use

The use of systemic Nimesulide is highly restricted by regulatory authorities and is generally classified as a second-line treatment in adults and adolescents aged 12 years and older, to be used for the shortest duration possible. It is contraindicated (prohibited) in many populations due to the risk of serious adverse effects, particularly involving the liver.

Contraindicated Populations

Nimesulide must not be used in individuals with:

  • Children under 12 years of age.
  • Hepatic impairment (any liver problem) or a history of hepatotoxic reactions to Nimesulide.
  • Severe renal impairment (creatinine clearance < 30 ml/min) or severe heart failure.
  • Active gastric or duodenal ulcer, history of recurrent ulceration, or gastrointestinal bleeding.
  • Severe coagulation disorders.
  • Third trimester of pregnancy and during breastfeeding.

Restricted/Conditional Use

Use requires special consideration and caution in elderly patients and those with a history of certain gastrointestinal disorders. Furthermore, Nimesulide is not recommended for women attempting to conceive, as it may impair fertility.

What should I know about interactions with other medicines?

Nimesulide Interactions with other medicines and products

Nimesulide's interaction profile is officially defined by regulatory bodies based on documented pharmacokinetic (PK) and pharmacodynamic (PD) effects with co-administered substances.

Pharmacodynamic and Contraindicated Interactions

The most critical documented interaction involves anticoagulant agents (such as Warfarin) and antiplatelet agents (such as Acetylsalicylic acid). These combinations are associated with an increased risk of bleeding complications due to additive effects. Regulatory documentation states that co-administration with anticoagulants is formally contraindicated in patients with severe coagulation disorders.

Exposure-Modifying Interactions

Co-administration with Nimesulide can affect the clearance of other drugs. Regulatory information reports that Nimesulide reduces the clearance of Lithium, which can lead to elevated plasma Lithium levels and potential toxicity. Furthermore, the co-administration of Furosemide (a diuretic) results in a decrease in its AUC and cumulative excretion, requiring caution in susceptible renal or cardiac patients.

Restrictions and Substance Avoidance

Official regulatory documents instruct patients to avoid excess alcohol during treatment. Use with other potentially hepatotoxic pain medications, such as Paracetamol or other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), is also explicitly restricted.

Topical Use Note

For the topical gel formulation, no systemic interactions with other medicinal products are known or expected via the cutaneous route.

Mechanism of Action

Nimesulide is a non-steroidal agent that modulates the inflammatory process primarily by interfering with the arachidonic acid cascade.

Its primary mechanism is the selective inhibition of the cyclooxygenase-2 (COX-2) enzyme, which catalyzes the conversion of arachidonic acid to pro-inflammatory prostaglandins. Nimesulide exhibits a preferential binding affinity and inhibitory action towards the COX-2 isoform over COX-1. This action results in decreased biosynthesis of prostaglandins and subsequent modulation of inflammatory signaling.

Nimesulide also engages in secondary molecular actions. It acts to stabilize mast cell membranes, which reduces the release of histamine and other preformed inflammatory mediators. Furthermore, it inhibits the synthesis of platelet-activating factor (PAF) and suppresses the activity of matrix metalloproteinases (MMPs), contributing to its overall physiological effect on inflammatory pathways.

Dosage and Administration Information

The administration of Nimesulide must strictly follow official regulatory guidelines, which are designed to standardize use and minimize risk. The minimum effective dose should always be used for the shortest duration necessary.

Systemic Use (Oral Formulations)

Administration Scope Official Labeled Instruction
Route & Form Oral (Tablets, capsules, granules for suspension)
Standard Dosing 100 mg per single dose
Frequency Twice daily (b.i.d.)
Timing with Meals Must be taken after meals
Course Duration Maximum duration of a treatment course is 15 days
Age Restrictions Contraindicated in children under 12 years
Special Preparation Granules/powder must be dissolved in water before intake.

Population-Specific Rules

No dosage adjustment is required for adolescents (12–18 years) or elderly patients. The drug is contraindicated in patients with severe renal impairment (creatinine clearance <30 mL/min) or hepatic impairment.

Topical Use (Gel)

Topical formulations (e.g., 3% w/w gel) are applied to the affected area 2–3 times daily and massaged until completely absorbed. The topical application should not be used on broken skin, or with occlusive dressings, and the duration of use is typically limited to 7 to 15 days.

These official instructions establish the complete, non-negotiable protocol for Nimesulide use, as determined by regulatory agencies to ensure proper administration.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Нимесулид

Evidence for Use in Short-Term, Acute Pain

Research into Nimesulide for acute pain involves numerous short-term Randomized Controlled Trials (RCTs). These studies explored outcomes related to physical discomfort for conditions such as soft tissue injuries and after certain procedures. Studies reported measurements of pain intensity changes during the acute treatment period, which were observed to differ from those reported by placebo groups, and were generally comparable to patterns described for other NSAIDs. What remains uncertain is the profile of repeated use or use beyond the very short follow-up durations, reflecting the short-term focus of the evidence base.

Evidence for Use in Primary Dysmenorrhea

Nimesulide was studied for conditions involving periods of heightened symptoms, specifically acute episodes of primary dysmenorrhea (menstrual pain). Systematic reviews and RCTs explored how pain intensity scores evolved in observed populations, with findings indicating that short-term symptom evolution was comparable to patterns described for other treatments evaluated for similar conditions. However, the existing evidence provides limited insight into the profile of repeated use over multiple menstrual cycles, as follow-up durations were limited to the acute episode.

Evidence for Symptomatic Relief in Osteoarthritis Flare-ups

Research explored the use of Nimesulide for symptomatic pain associated with osteoarthritis (OA) flare-ups. Studies monitored outcomes related to systemic or functional imbalance by examining measured changes in physical functioning and patient-reported pain. Older research reported observed changes in functional scores. A key research limitation is that the data that supported longer-term tracking of symptoms are no longer relevant for current guidance, which strictly restricts use to the shortest duration possible, typically for acute symptom flare-ups only.


Uncertainty and Research Gaps

The overall research landscape shows a consistent focus on short-term follow-up, with the vast majority of evidence derived from studies observing responses over time intervals of two weeks or less. In contrast, there is limited information for long-term outcomes required for chronic conditions. Furthermore, while Nimesulide was observed in trials that used adult populations as the primary focus, data for certain groups, such as children under 12 or individuals with complex comorbid conditions, remains insufficient for full characterization.

Frequently Asked Questions (FAQ)

Common questions about Нимесулид (FAQ)


Q: How quickly should I expect to feel the effect of Нимесулид?

Regulatory documents state that Nimesulide is associated with a relatively rapid onset of its pain-relieving action. Evidence from clinical studies indicates that reductions in pain were observed in some studies within approximately 15 minutes after intake.


Q: Can Нимесулид be used for chronic pain management, or just acute pain?

Official indications for this medicine are restricted to the treatment of acute pain and short-term symptomatic relief for conditions like osteoarthritis flare-ups and primary dysmenorrhoea. Due to safety concerns regarding potential liver effects, regulatory bodies do not recommend its use long-term for chronic pain management.


Q: Is there any research evidence supporting the use of Нимесулид for fever reduction?

While official product information consistently lists an antipyretic (fever-reducing) effect as one of the medicine's core properties, the published research evidence overviews generally focus on studies related to its effectiveness in reducing pain and inflammation.


Q: What makes Нимесулид different from other NSAIDs?

A key differentiating feature is that Nimesulide is classified as a selective Cyclooxygenase-2 (COX-2) inhibitor. This means it preferentially inhibits the enzyme primarily responsible for triggering the inflammatory response. Its overall pharmacological profile is also described as including supplementary antioxidant properties.


Q: Is Нимесулид used for conditions other than pain and inflammation?

Yes, official regulatory documents indicate that Nimesulide is also approved for the symptomatic treatment of primary dysmenorrhoea, which is pain associated with menstruation. It is also used for short-term pain relief related to osteoarthritis flare-ups.


Q: Are there any known interactions between Нимесулид and popular cold medicines?

Official guidance restricts the use of Nimesulide with other pain medications that are potentially toxic to the liver, such as Paracetamol. Since Paracetamol is a common active ingredient in many over-the-counter cold remedies, official information notes that co-administration may require caution.


Q: What kind of studies have been conducted on the long-term effects of Нимесулид?

The overall evidence base for Nimesulide primarily consists of studies with short-term follow-up, typically observing responses over periods of two weeks or less. Data that previously supported longer-term tracking of symptoms are generally considered limited or no longer relevant for current guidance, which restricts use to the shortest duration possible.


Q: Can Нимесулид be taken by people with certain kidney conditions?

Regulatory information indicates that no dosage adjustment is considered necessary for patients with mild to moderate renal impairment. However, Nimesulide is formally excluded from use in individuals with severe kidney impairment.


Q: Can I use Нимесулид if I have a history of mild acid reflux?

The official product information indicates that the medicine may require caution when considered for patients who have a history of gastrointestinal disorders, such as peptic ulceration or Crohn's disease. It is formally contraindicated if a patient has active gastrointestinal ulceration or bleeding.


Q: Are there specific food items or drinks that interact with Нимесулид?

The official pharmacokinetic profile indicates that the intake of food has a negligible effect on how the medicine is absorbed. However, patients are instructed in regulatory documents to avoid excess alcohol during the course of treatment.


Q: Does taking Нимесулид regularly lead to tolerance?

Authoritative medical sources indicate that Nimesulide is not associated with the development of tolerance or habit-forming tendencies. Its use is strictly limited to short-term treatment durations.


Q: Can Нимесулид be used for managing menstrual pain?

Yes, Nimesulide is officially approved and indicated for the symptomatic treatment of primary dysmenorrhoea, which is the medical term for menstrual pain.


Q: What does the evidence say about the effectiveness of Нимесулид compared to placebo?

Evidence from clinical research has noted that the measured changes in pain intensity over time were observed to differ from patterns reported by groups receiving a placebo.


Q: How does official guidance say about using Нимесулид with diuretics?

Official information reports that co-administration with Nimesulide can affect the effectiveness of diuretics (commonly known as 'water pills'). This may result in decreased diuretic action, which may require caution in certain patients, particularly those with existing kidney or heart conditions.


Q: Is it common for people to feel tired after taking Нимесулид?

Official regulatory documents list drowsiness and fatigue among the possible side effects of this medication.


Q: Is it true that Нимесулид is not widely available in all countries?

Yes. While Nimesulide is available in over 50 countries globally, it is not approved for marketing by the regulatory bodies in all countries, including the United States.


Q: Why do some people say Нимесулид is banned in their country?

The medicine has been suspended or withdrawn from the market in several countries. This regulatory action was taken due to safety concerns primarily related to the potential risk of serious liver injury (hepatotoxicity).


Q: Can Нимесулид cause dizziness or difficulty focusing?

Official regulatory documents list dizziness as a known and commonly reported side effect. This type of central nervous system effect is listed in the official product information.


Q: What are the reported side effects concerning the skin when using Нимесулид?

Reported side effects concerning the skin include reactions such as a rash or itching. The complete profile of adverse events is detailed in the official product documentation.


Q: What are the official warnings about combining Нимесулид with alcohol?

Official warnings instruct patients to avoid excess alcohol during treatment. This is because alcohol co-administration is noted as having the potential to increase the chance of adverse effects such as dizziness and may contribute to the documented risk of potential liver injury.


Q: Does Нимесулид have any known effects on sleep patterns?

Drowsiness or feeling sleepy is listed as a possible side effect in the official product information for Nimesulide.


Q: What information is available regarding the use of Нимесулид in teenagers?

The medication is formally contraindicated (not allowed) in children under 12 years of age. For adolescents (12–18 years), official guidelines state that the same standard adult dose is used, and no specific dosage adjustment is required.


Q: Is Nimesulide a controlled or prescription-only substance?

In the European countries where the systemic forms of Nimesulide are approved for use, they are regulated as a prescription-only substance.

How should Нимесулид be stored and disposed of?

How to Store and Dispose of Nimesulide

Official Storage Requirements

Nimesulide must be stored under specific environmental and safety conditions as mandated by regulatory bodies. The medication must be kept out of the sight and reach of children and should be stored locked up. To maintain product integrity, store the medicine in a cool, dry, and well-ventilated place, protected from heat and direct sunlight. It is required to keep the product in its original container and ensure the container remains tightly closed.

Disposal Instructions

Unused or expired Nimesulide must be disposed of safely. Contents and containers should be delivered to an approved waste disposal plant in accordance with local, regional, and national regulations. This measure is required to prevent environmental contamination and misuse of the medicinal product.

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

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