Aulin

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Aulin

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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 Aulin

Quick Facts

Property Description
Active ingredient Nimesulide
Forms Tablet, Granules for Oral Suspension, Gel (Topical)
Pharmacological class Nonsteroidal Anti-inflammatory Drug (NSAID)
Common purpose Relief of pain, inflammation, and fever
Origin Synthetic compound (Sulfonanilide derivative)

What Type of Medicine is Aulin (Nimesulide)?

Aulin is the trade name for the drug Nimesulide, which is broadly classified as a Nonsteroidal Anti-inflammatory Drug (NSAID) used to manage pain, inflammation, and fever. The active substance Nimesulide is a synthetic compound chemically derived from sulfonanilide. This classification identifies that the medicine works to reduce symptoms linked to inflammation without containing steroids or opioids.

Nimesulide is characterized as a preferential Cyclooxygenase-2 (COX-2) inhibitor. This means its primary mechanism involves selectively modulating the COX-2 enzyme responsible for generating inflammation signals in the body, which defines its pharmacological profile compared to non-selective NSAIDs.

Composition, Origin, and Available Forms of Aulin

The medicine is manufactured as a single active ingredient product, containing Nimesulide as the primary therapeutic agent. Nimesulide is formulated for both oral and topical administration, which determines whether the action is systemic or localized. Standard dosage forms include tablets and granules for oral suspension intended for oral use, as well as a topical gel preparation designed for dermal application. The availability of both oral and topical forms allows for application depending on whether systemic relief or localized action is required for managing acute discomfort.

General Purpose: What Aulin Is Used to Relieve

The general purpose of Aulin is to provide symptomatic relief through three core pharmacological effects: analgesic (pain relief), anti-inflammatory (swelling reduction), and antipyretic (fever reduction). The drug works by modulating the body's production of prostaglandins, which are chemical messengers responsible for signaling pain sensation and the initiation of the inflammatory response. This established action allows Aulin to reduce discomfort and heat associated with various acute inflammatory states.

What side effects are possible with Aulin?

Regulatory Safety Profile

Aulin (nimesulide) has a strictly documented safety profile, with regulatory agencies, particularly in the European Union, emphasizing the risk of serious liver damage. Its use is confined to the treatment of acute pain and primary dysmenorrhea for limited periods only.

Key Regulatory Safety Concerns

Safety Area Serious Potential Reactions (Very Rare)
Hepatobiliary Disorders Fulminant hepatitis (may be fatal), Jaundice, Cholestasis
Gastrointestinal Disorders Haemorrhage, Ulceration, Perforation
Skin Disorders Stevens-Johnson syndrome (SJS), Toxic epidermal necrolysis (TEN)
Immune System Anaphylaxis, Severe Hypersensitivity Reactions

Frequency-Classified Adverse Reactions

Regulatory documents classify side effects based on how often they occurred in trials:

  • Common: Diarrhea, Nausea, Vomiting, and increases in liver enzyme levels (transaminases).
  • Uncommon: Gastrointestinal bleeding, Ulcer, Perforation, Hypertension, Rash, Pruritus, and Oedema (swelling).
  • Rare/Very Rare: These include severe reactions such as severe liver failure (hepatitis, fulminant hepatitis), blood disorders (thrombocytopenia, pancytopenia), and severe skin reactions (SJS, TEN).

Safety-Related Restrictions

Treatment must be prescribed for the shortest possible duration, not exceeding 15 days per course, as documented in regulatory guidelines to minimize the risk of serious hepatic adverse events.

Contraindications (Use is Forbidden):

  • Any active liver disease or a history of nimesulide-induced liver toxicity.
  • Severe renal (kidney) or cardiac (heart) failure.
  • Active peptic ulcer, gastrointestinal bleeding, or perforation.
  • Hypersensitivity reactions (e.g., asthma, urticaria) to nimesulide or other similar medicines (NSAIDs).

Important Note: Therapy must be immediately stopped if signs of liver injury appear, such as persistent vomiting, dark urine, or abnormal liver function tests.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Aulin (Nimesulide) overdose is based on documented clinical manifestations and mandated emergency actions. Overdose is known to present initially with gastrointestinal symptoms, including nausea, vomiting, indigestion, and upper abdominal pain (epigastric pain). Central nervous system effects such as drowsiness, lethargy, and confusion are also documented as potential manifestations.

Overdose situations carry the risk of severe and life-threatening outcomes. These include the development of acute liver failure, acute renal failure, and potential for severe neurological events such as convulsions and coma. The specific risk of acute hepatic injury is a primary concern documented in regulatory reviews.

Urgent medical attention must be sought immediately if an overdose is suspected or if any signs of severe toxicity are observed. Regulatory bodies require that patients exhibiting severe symptoms are referred for urgent hospital treatment. The management of Nimesulide overdose is officially defined as purely symptomatic and supportive treatment, as no specific antidote is known for acute toxicity. Due to the possibility of delayed severe outcomes, hospital monitoring and observation are required following significant exposure.

Overdose risk is heightened in specific populations, with regulatory documents noting increased risk in patients with pre-existing severe hepatic impairment or severe renal impairment.

Therapeutic Uses of Aulin

What Aulin Treats: Main Uses and Benefits

Aulin (Nimesulide) is commonly used for managing short-term symptomatic relief of acute pain and inflammation. This may include addressing symptom clusters that create noticeable physiological strain in common conditions such as muscle strains, sprains, and the pain experienced following minor surgical or dental procedures. The medicine is utilized in settings that involve acute or disruptive symptom patterns, including acute pain, painful osteoarthritis, and primary dysmenorrhoea.

The therapeutic scope is applied across domains where additional symptomatic support is needed, including providing relief during painful flares of osteoarthritis and managing musculoskeletal discomfort. Aulin is relevant for easing symptoms related to systemic imbalance, and may assist with reducing elevated body temperature (fever), often seen in association with acute inflammatory conditions, and is commonly used to help with the relief of primary dysmenorrhoea (menstrual cramps).

It is used in areas where short-term symptom management is appropriate and provides supportive relief when symptoms interfere with routine activities. This supportive relief may assist with maintaining functional stability and supports general well-being during symptomatic phases.


Quick Fact: Relief for Acute Inflammatory Pain

Domain Key Symptom Context of Use
Analgesic Mild to moderate pain Post-traumatic events (strains)
Anti-inflammatory Localized swelling Osteoarthritis flares
Antipyretic Elevated temperature Acute systemic episodes

Eligibility and Restrictions for Use

Who Can and Cannot Use Aulin (Nimesulide)

Official regulatory information strictly defines who is eligible to use Aulin, primarily due to serious concerns regarding hepatotoxicity (liver damage). The medicine is restricted to adults and adolescents aged 12 years and older who do not have any contraindicating conditions.


Contraindicated Populations and Conditions

Status Populations/Conditions (Examples)
Absolutely Contraindicated Hepatic impairment (any degree), Severe renal impairment (creatinine clearance < 30 ml/min), Severe heart failure, Active gastrointestinal ulceration or bleeding, Severe coagulation disorders, and Alcoholism or drug addiction.
Hypersensitivity Known hypersensitivity to nimesulide or a history of reactions (e.g., asthma, urticaria) to acetylsalicylic acid or other NSAIDs.
Age/Developmental Children under 12 years. Women in the third trimester of pregnancy and those who are breastfeeding.

Restricted/Not Recommended Use

  • Pregnancy: Use is not recommended during the first and second trimesters of pregnancy and in women attempting to conceive.
  • Elderly Patients: Use is allowed, but regulatory labeling advises clinical monitoring due to increased risks involving gastrointestinal, renal, cardiac, and hepatic function.

This eligibility profile ensures the medicine is used only by patients whose health status meets the defined safety parameters outlined by official governmental regulatory bodies.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documentation classifies several substances and substance classes that require restrictions or caution when used concomitantly with Aulin (Nimesulide).


Contraindicated and High-Risk Combinations

Classification Interacting Agents
Prohibited Known hepatotoxic drugs and concurrent alcohol abuse are officially prohibited due to the risk of increasing hepatic reactions.
Not Recommended Warfarin or similar anticoagulant agents and Acetylsalicylic acid due to an increased risk of bleeding complications.

Documented Exposure and Efficacy Alterations

Nimesulide is documented as an inhibitor of the CYP2C9 enzyme. This pharmacokinetic action may increase the plasma concentrations of other medicines that are substrates of this enzyme.

Specific interactions that alter drug exposure or efficacy include:

  • Lithium: Clearance is officially reduced, resulting in elevated plasma levels and potential toxicity.
  • Methotrexate: Serum levels may increase; a strict timing rule requires Nimesulide to be administered less than 24 hours before or after treatment with Methotrexate.
  • Furosemide: The diuretic response is officially reduced; caution is specifically required in susceptible renal or cardiac patients.
  • Cyclosporines: The use of Nimesulide may officially increase the nephrotoxicity of Cyclosporines.

Mechanism of Action

Selective Enzyme Inhibition and Prostaglandin Reduction

This section outlines the drug's primary action, which involves the selective inhibition of the Cyclooxygenase-2 ( COX-2) enzyme. This mechanism reduces the conversion of arachidonic acid into specific signaling molecules, namely prostaglandins, within the arachidonic acid cascade. Modifying this early molecular step reduces the level of these mediators, which shapes the resulting physiological effects.


Modulating Thermoregulatory and Nociceptor Responses

The reduction in prostaglandin levels directly influences two major physiological systems. It affects the central thermoregulatory set-point in the hypothalamus, which alters the signaling within the body's heat-control pathway, leading to a reduction in elevated temperature (anti-pyresis). Additionally, the decrease in prostaglandin levels reduces the sensitization of peripheral nerve endings ( nociceptors), thereby resulting in a reduced transmission of certain signals.

Dosage and Administration Information

How to Use Aulin (Nimesulide) – Administration Guidelines

This section describes the administration rules for Nimesulide formulations.


Administration Scope

Category Standard Instruction
Route of administration Oral for systemic use (tablets, granules) and Topical for localized use (gel).
Dosing schedule (Adults) Oral: 100 mg Nimesulide. Topical Gel: Apply a 6-7 cm line of 3% w/w gel (approx. 3 g).
Timing in relation to meals Oral systemic forms are taken after a meal.
Preparation requirements Granules for oral suspension are dissolved in water before administration.
Age-group administration Adolescents (12-18 years) and Older Adults follow the standard regimen without dosage adjustment.
Missed-dose rule If a dose is missed, a double dose must not be taken to compensate; continue with the next scheduled dose.

Use Pattern and Restrictions

The protocol involves using the minimum effective dose for the shortest possible duration. For systemic oral forms, treatment is limited to a maximum of 15 consecutive days. The frequency pattern is twice daily for systemic oral forms, ensuring the total daily dose does not exceed 200 mg. Topical gel is applied 2-3 times daily. When using the gel, hands must be washed after application, and it must not be used with occlusive dressings.


Connection to the Overall Use Protocol

A structured protocol emphasizes administration by either the oral or topical route, based on the required action. This involves a 100 mg dose taken twice daily after meals for systemic relief and defines a 15-day maximum duration for oral treatment. This structure ensures that use adheres to the established pattern of administration and time-based limits.

Recent Clinical Evidence

Recent Clinical Evidence Overview

Long-Term Outcomes Research

Research has explored the relationship between this treatment and the long-term prognosis for patients with specific auto-immune disorders. A study comparing the drug against naproxen in patients with osteoarthritis (OA) of the knee or hip demonstrated non-inferiority in reducing pain intensity at both 6 and 12 months. This finding indicates that the treatment's efficacy was comparable to that of naproxen for long-term OA pain relief.


Research on Specific Markers and Acute Pain

Studies examined the drug's effect on inflammatory markers, such as C-Reactive Protein (CRP) and Interleukin-6 (IL-6), in relation to specific pain states. Additionally, numerous trials have investigated the drug's use in acute pain and primary dysmenorrhea. One prospective study on fever and pain suggested that the treatment was associated with a greater reduction in fever and visual analog scale (VAS) pain scores compared to combinations of ibuprofen and paracetamol, with effects observed relatively rapidly.


Combination Therapy Trials and Safety Monitoring

Clinical trials have investigated the use of this medication in combination with other agents. For instance, a fixed-dose combination with a proton-pump inhibitor (PPI) was studied against a naproxen/PPI combination for the treatment of osteoarticular pain, with research demonstrating non-inferiority between the two regimens.

Research has also focused on population safety. Individuals with pre-existing conditions, particularly severe hepatic (liver) disease, were often excluded from certain clinical trials, or the patient groups were subject to specific safety monitoring, aligning with regulatory restrictions in many regions that emphasize careful use due to rare, unpredictable hepatic events.

Key Studies & References

  1. Efficacy and safety of a fixed-dose combination of nimesulide/pantoprazole compared to naproxen/esomeprazole for pain relief in patients with osteoarticular diseases and dyspeptic symptoms
  2. Nimesulide with Metformin Lowers Inflammatory Markers in Women with PCOS (Study on CRP and IL-6 levels)

Frequently Asked Questions (FAQ)

Common questions about Aulin (FAQ)


Q: How quickly should I expect Aulin to start working for pain relief?

Studies and official information indicate that Aulin has a relatively rapid onset of action, with effects observed in some cases shortly after administration. Aulin is typically prescribed for acute pain, and clinical data suggests a rapid onset; however, individual experiences with pain relief timing may vary.


Q: How long does the pain relief from one dose of Aulin usually last?

According to the official product information, the recommended dosing frequency is generally twice daily. This frequency pattern is consistent with a duration of action requiring re-dosing approximately every 12 hours.


Q: Are there any signs that Aulin might be affecting my liver function?

Regulatory documents emphasize the risk of liver injury. Possible severe signs include persistent vomiting, dark urine, or yellowing of the skin or eyes (jaundice). Less severe but common findings in laboratory tests include an increase in liver enzyme levels (transaminases).


Q: Can taking Aulin long-term increase the risk of any cardiovascular issues?

As with other Non-Steroidal Anti-inflammatory Drugs (NSAIDs), regulatory warnings advise using Aulin for the shortest possible duration. This approach is intended to minimize potential risks, including those related to the cardiovascular system. Official sources advise that caution is needed in patients with existing heart conditions.


Q: Can I take Aulin if I'm already taking a blood thinner like warfarin?

Official product information notes that the use of Aulin alongside anticoagulant agents, such as warfarin, is not recommended because of the associated increased risk of bleeding complications.


Q: What foods or drinks should I avoid when I am taking Aulin?

Regulatory documents explicitly prohibit concurrent alcohol abuse while taking Aulin because it significantly increases the risk of serious hepatic (liver) reactions. The medicine itself should be taken after a meal.


Q: Does Aulin have a notable effect on platelet aggregation?

As an NSAID, Aulin can influence platelet function, which affects blood clotting. Due to this potential effect, the medicine is contraindicated (forbidden) for individuals who have severe coagulation disorders.


Q: Does Aulin come in different forms besides tablets or granules?

Yes, Aulin is formulated for systemic (internal) use as tablets and granules for oral suspension, and it is also available as a topical gel preparation for localized application.


Q: What are the most commonly reported side effects when taking Aulin?

According to frequency-classified adverse reactions in official documents, common side effects include gastrointestinal issues such as diarrhea, nausea, and vomiting. An increase in liver enzyme levels (transaminases) is also a common finding.


Q: Is it normal to feel a bit dizzy after taking Aulin?

Dizziness has been reported as an undesirable effect when taking Aulin. The product information indicates that if side effects such as dizziness or weakness are experienced, activities that require alertness, like driving or operating heavy machinery, should be avoided.


Q: What should I do if I forget to take my scheduled dose of Aulin?

The official missed-dose rule specifies that a double dose must not be taken to compensate for a forgotten one. Instead, the patient information advises continuing with the next scheduled dose at the regular time.


Q: Are there known interactions between Aulin and high blood pressure medications?

Regulatory documents state that Aulin may reduce the therapeutic effect of certain medications for high blood pressure, particularly diuretics like furosemide. Use alongside these drugs requires careful consideration, especially in patients who may be susceptible due to cardiac or kidney conditions.


Q: Is it safe to drink alcohol while I am using Aulin?

The prohibition is specifically for concurrent alcohol abuse due to the high risk of severe liver damage. Patients should seek guidance from a healthcare professional regarding any alcohol consumption while taking the medication.


Q: Why is Aulin sometimes considered a second-line NSAID treatment?

The European Medicines Agency and other regulatory bodies have restricted the use of Aulin to a second-line treatment. This means it is typically used only after other NSAIDs have failed, primarily due to concerns about the risk of serious liver damage.


Q: Do many people experience allergic reactions to Aulin?

Severe hypersensitivity reactions and anaphylaxis (severe allergic reaction) are classified as rare adverse events, meaning they are expected to affect less than 1 in 1,000 users. However, use is contraindicated for anyone with a history of allergic reactions to the drug.


Q: Is it true that Aulin can sometimes cause fluid retention?

Official regulatory documents list oedema (swelling due to fluid retention) as an uncommon adverse reaction. This is a potential risk associated with its use.


Q: How should I store Aulin to keep it effective?

Final dosage forms of the medicine should generally be stored at room temperature, in a cool and dry place. It is essential to keep all medicine in its original packaging and ensure it is kept out of the sight and reach of children.


Q: Can Aulin affect the results of any laboratory tests?

Yes, Aulin can affect lab results. It is commonly reported that the medicine can cause an increase in liver enzyme levels (transaminases), which may be detected during routine liver function testing.


Q: Is Aulin ever prescribed for headaches or migraines?

While the main regulatory indications are acute pain and primary dysmenorrhea, nimesulide has been used in clinical practice for the relief of mild to moderate pain, which can include headaches.


Q: Why is the active ingredient, nimesulide, restricted in some countries?

Nimesulide has been the subject of regulatory reviews and restrictions by several governmental bodies. The primary reason for these restrictions is the potential, though rare, risk of serious liver injury (hepatotoxicity).


Q: Does Aulin help with pain caused by gout?

As a non-steroidal anti-inflammatory drug (NSAID), Aulin has been investigated in clinical settings for its effectiveness in treating acute gouty arthritis, which is a condition involving inflammation and pain.


Q: Is Aulin a habit-forming or addictive drug?

Aulin is not classified as a chemically addictive drug. However, official product information lists a history of drug addiction as a contraindication for its use.


Q: Does Aulin work as a muscle relaxant or just an anti-inflammatory?

Aulin is classified pharmacologically as a Non-Steroidal Anti-inflammatory Drug (NSAID). Its primary actions are analgesic (pain-relieving) and anti-inflammatory; it is not classified as a muscle relaxant.


Q: Can Aulin cause sensitivity to sunlight?

Regulatory documents indicate that photosensitivity reactions, such as severe skin reactions after sun exposure, have been reported in connection with the use of nimesulide.


Q: Can Aulin be taken with antacids?

Official information suggests that nimesulide may interact with antacids. This interaction could potentially decrease the drug’s excretion rate, which may alter its expected effects.


Q: Does Aulin have a sedative effect?

The product information includes warnings about potential central nervous system effects, such as dizziness or weakness. The product information states that if side effects such as dizziness or weakness are experienced, activities requiring concentration, like driving or operating machinery, should be avoided.


Q: Why is Aulin generally prescribed for acute (short-term) pain?

Aulin is restricted to treatment for acute, or short-term, pain only. This strict limitation is a regulatory measure designed to minimize the potential risk of rare but serious adverse events, particularly those affecting the liver.

How should Aulin be stored and disposed of?

Storage Requirements

Official regulatory information for the active substance in Aulin, nimesulide, specifies that it must be handled and stored with care. The bulk substance requires storage in a freezer and must be Store[d] locked up, away from heat and sources of ignition.

Handling and Disposal

To prevent accidental harm, keep all medicine out of the sight and reach of children.

When disposing of unused or expired medicine, the preferred method is to use a drug take-back location or a mail-back envelope program, as recommended by regulatory agencies. If these options are not readily available, most medicines can be discarded in household trash by mixing them with an unappealing substance (like used coffee grounds or dirt) and placing the mixture in a sealed container, then throwing it in the trash. The substance should not be released into the environment, and disposal must follow local, regional, and national hazardous waste regulations.

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

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