Algolider

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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 Algolider

Quick Facts About Algolider

Property Description
Active ingredient Nimesulide
Form Primarily oral (tablets, granules) and topical (gel)
Pharmacological class Nonsteroidal Anti-inflammatory Drug (NSAID)
Common use Relief of pain, inflammation, and fever
Origin Synthetic compound (sulfonanilide derivative)

What Type of Medicine is Algolider?

Algolider is a medicinal product defined by the sole active component, Nimesulide, a unique synthetic chemical entity classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). Nimesulide is formally recognized as a sulfonanilide derivative, distinguishing its structure within the broader NSAID class. Its specific mechanism involves preferential inhibition of Cyclooxygenase-2 (COX-2), a process supported by pharmacological studies that confirm its focused activity on the inflammatory pathway. The drug is typically categorized as a prescription-only medicine (Rx) in many regulatory jurisdictions, reflecting its status requiring professional medical oversight.

Composition and Available Forms

The composition of Algolider is based entirely on the single active ingredient, Nimesulide, and is not a combination product. This compound is offered in various pharmaceutical forms, allowing for therapeutic flexibility. It is primarily administered via the oral route, available as traditional tablets or powdered granules for oral suspension. The granule formulation is often a recognized differentiator for ease of administration to patients who may have difficulty swallowing solid forms. Additionally, Nimesulide is formulated as a topical gel for localized external application, a common option for managing musculoskeletal discomfort.

General Therapeutic Purpose

The overall purpose of Algolider is to provide comprehensive symptomatic relief through its triple therapeutic actions. It functions as an anti-inflammatory agent, an analgesic agent for pain relief, and an antipyretic agent for fever reduction. Its general use involves managing acute conditions where pain and inflammation coexist, such as relieving discomfort or reducing fever associated with temporary illness. This broad action makes it a significant, clinically recognized tool in the symptomatic management of inflammation and its related discomforts.

What side effects are possible with Algolider?

Possible Side Effects and Safety Information

The safety profile of Algolider, based on governmental regulatory documents, includes significant warnings and usage restrictions, particularly concerning its potential for liver damage.

Adverse Reactions and Serious Risks

Algolider is associated with a risk of hepatotoxicity (liver toxicity), which in rare cases has progressed to fulminant hepatic failure requiring liver transplantation or resulting in death. While rare (estimated at approximately 1 in 50,000 patients), this serious risk is the primary safety concern.

Commonly reported adverse reactions involve the gastrointestinal system (e.g., diarrhea, vomiting, nausea, abdominal pain) and the nervous system (e.g., dizziness), which typically occur at an incidence similar to or slightly higher than placebo in controlled studies. Cases of gastrointestinal bleeding have also been documented.

Serious skin reactions, including life-threatening conditions like Stevens-Johnson syndrome, have been reported very rarely with this class of medication, often occurring within the first month of treatment.

System-Organ Class Involved Key Adverse Reactions (Regulatory Scope)
Hepatobiliary Hepatotoxicity, Liver Failure, Elevated Liver Enzymes
Gastrointestinal Gastrointestinal Bleeding, Ulceration, Nausea, Diarrhea
Skin Rash, Urticaria, Very Rare Severe Skin Reactions

Safety Restrictions and Contraindications

Regulatory agencies, such as the European Medicines Agency (EMA), have imposed strict limitations to mitigate risks:

  • Duration Limit: Treatment must be strictly limited to a maximum of 15 days to minimize the risk of serious liver injury.
  • Therapeutic Position: Use is restricted to second-line treatment for acute pain or primary dysmenorrhoea.
  • Contraindications: Algolider is contraindicated in patients with pre-existing liver problems or severe chronic kidney disease. It is also contraindicated during pregnancy, in women who are attempting to conceive, and in children under 12 years of age.

Patients who develop symptoms compatible with liver injury, such as fatigue, dark urine, or persistent nausea, should discontinue the drug immediately. The overall benefit/risk profile is considered favorable only when these mandated restrictions and shortest possible duration of use are strictly followed.

Overdose and Emergency Response

The official documentation of Algolider (Nimesulide) overdose describes a profile ranging from mild to severe manifestations. Common, documented overdose presentations often affect the gastrointestinal system and central nervous system (CNS), including nausea, vomiting, epigastric pain, lethargy, and drowsiness. Gastrointestinal bleeding is also a potential manifestation.

Serious Outcomes and Immediate Actions

Overdose may lead to rare, severe systemic outcomes that require urgent medical intervention. These life-threatening complications are officially documented to include acute renal failure, respiratory depression, coma, and serious hepatic reactions, including very rare fatal cases. Immediate medical attention must be sought for any suspected overdose scenario, regardless of symptom severity. Treatment should be discontinued at the first sign of symptoms compatible with hepatic injury, such as fatigue or dark urine.

Management and Constraints

Management of Algolider overdosage is restricted to symptomatic and supportive care; the regulatory basis explicitly confirms that no specific antidote is known. Procedures like gastric lavage or activated charcoal may be considered in the case of a large, recent ingestion. Hospital observation is often required due to the potential for the rare, severe sequelae. Elderly patients are noted to have an increased vulnerability to severe NSAID-related adverse effects, which remains a critical consideration in overdose.

Therapeutic Uses of Algolider

What Algolider Treats: Main Uses and Benefits

Algolider is commonly used to help manage symptoms related to specific acute pain and inflammatory conditions.

The medication is generally applied across domains where additional symptomatic support is needed for conditions involving inflammatory or irritative processes. Its therapeutic relevance is applicable in addressing symptoms associated with acute musculoskeletal pain, painful episodes of osteoarthritis, and the cramping of primary dysmenorrhoea (menstrual pain). It is also commonly used in situations requiring temporary assistance in symptom stabilization, such as following postoperative dental procedures.

“Algolider may assist with supporting patients during difficult episodes and contributes to improved comfort.”

This supportive approach may help patients cope more steadily with symptom fluctuations, and assists with supporting functional stability during symptomatic periods. The main therapeutic benefit contributes to easing the overall symptom load in situations involving certain distressing symptoms.


Quick Fact: Relief for Acute Pain and Inflammation

Regulatory References

  1. European Medicines Agency product characteristics summary

Eligibility and Restrictions for Use

Who Can and Cannot Use Algolider?

Eligibility for Algolider (Nimesulide) is subject to strict limitations and absolute contraindications defined by official regulatory documents, primarily from the European Medicines Agency (EMA). Use is formally established for adults and adolescents 12 years of age and older who do not have any of the specific high-risk conditions.


Populations for Whom Use is Contraindicated

Official labeling prohibits the use of Algolider in several population groups. This includes all children under 12 years of age.

Organ Function and Condition Restrictions:

  • Hepatic Status: Individuals with any degree of hepatic impairment, active liver disease, or a history of Nimesulide-related hepatotoxicity [EMA].
  • Renal Status: Patients with severe renal impairment (creatinine clearance < 30 ml/min) [EMA].
  • Gastrointestinal: Patients with active gastric or duodenal ulcer, recurrent GI bleeding, or active Inflammatory Bowel Disease [EMA].
  • Cardiovascular/Bleeding: Individuals with severe heart failure, severe coagulation disorders, or active bleeding [EMA].
  • Hypersensitivity: Those with a known allergy to Nimesulide or a history of hypersensitivity to Aspirin or other NSAIDs [EMA].

Pregnancy and Lactation Status:

Algolider is contraindicated during the third trimester of pregnancy and throughout the period of lactation/breastfeeding [EMA]. Use is generally not recommended for women attempting to conceive [EMA].

What should I know about interactions with other medicines?

Interactions with other medicines and products

Algolider (Nimesulide) has an officially documented interaction profile based on its effect on metabolic enzymes and its pharmacodynamic effects on renal function and blood coagulation. Certain combinations are classified as contraindicated or not recommended in official regulatory documents.

Documented Interaction Patterns

Classification Interacting Entity Official Regulatory Statement
Contraindicated Other Hepatotoxic Drugs, Alcohol Abuse Co-administration is prohibited due to the increased risk of severe hepatic reactions.
Pharmacokinetic CYP2C9 Substrates Algolider is a documented CYP2C9 inhibitor, which may lead to increased plasma exposure of co-administered drugs metabolized by this enzyme.
Pharmacodynamic Anticoagulant Agents Co-administration is generally not recommended due to a heightened risk of bleeding complications.
Exposure Risk Lithium, Methotrexate Reduces the clearance of Lithium, leading to elevated plasma levels; caution is required when used within 24 hours of Methotrexate administration, as this may increase its toxicity.

Co-administration with Diuretics, ACE Inhibitors, or ARBs may lead to reduced efficacy of these agents and can result in deterioration of renal function, particularly in elderly patients or those with existing cardiac impairment. The simultaneous use of different Nonsteroidal Anti-inflammatory Drugs (NSAIDs) is also restricted due to the increased risk of adverse effects.

Mechanism of Action

Algolider functions as a selective antagonist by binding directly to the IL-17RA receptor subunit, preventing its necessary association and dimerization with IL-17RC. This molecular interference effectively blocks the activation and recruitment of the ACT1 signaling cascade, which is critical for initiating downstream events. Consequently, the ligand-mediated signal transduction is interrupted, leading to the sustained inhibition of the nuclear factor kappa-light-chain-enhancer of activated B cells ( NF-kappa B) pathway. This pathway suppression reduces the transcription rate of various pro-inflammatory cytokines and chemokines, including IL-6 and TNF-alpha. The resulting decrease in inflammatory mediator synthesis modulates the signaling environment of local bone and cartilage cells, influencing cellular processes such as the differentiation and activity of osteoclasts and chondrocytes. This pharmacodynamic action selectively targets key regulatory points within the inflammatory and bone resorption cascade.

Dosage and Administration Information

How to Use Algolider

Algolider (Nimesulide) is used according to strict, standardized protocols for the management of acute symptoms. The medication is available for systemic administration primarily via the oral route (tablets or granules) and for local application as a topical gel.


Official Administration Guidelines

Category Official Instruction
Standard Systemic Dose 100 mg of Nimesulide per dose, taken twice daily (bid).
Maximum Daily Dose Treatment must not exceed 200 mg per day.
Timing in Relation to Meals Oral dosage forms must be consumed after meals (with food).
Preparation Oral granules must be dissolved in a sufficient amount of water prior to ingestion.
Dose Principle The minimum effective dose (MED) must be used for the shortest possible duration.

Duration and Specific Populations

Official instructions mandate that the total systemic course of treatment must not exceed 15 days. This constraint establishes a fixed, short-term use pattern for the medication.

Regarding specific patient groups, official labeling confirms that no dosage adjustment from the standard adult systemic dose is required for adolescents aged 12 to 18 years or for older adults.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trial Data: Efficacy and Safety

Research has evaluated whether the investigational product could potentially be associated with changes in the frequency and severity of symptoms in adult patients with Chronic Idiopathic Urticaria (CIU).

Primary Efficacy Endpoints

  • Urticaria Activity Score (UAS7): The main study endpoint examined the difference in the weekly Urticaria Activity Score (UAS7) at the 12-week mark between the investigational product group and the placebo group. The trial findings reported a numerical difference in the median UAS7 scores between the investigational product group and the placebo group.
  • Impact on Symptoms: Research findings explored whether the investigational product was associated with changes in the quality of life and examined its relationship to measurements of overall disease impact. Research also evaluated whether the investigational product was associated with changes in the severity of itching (pruritus).

Safety and Tolerability

Clinical trials explored the tolerability of this product. Adverse events were recorded and categorized across treatment groups.

  • Reported Adverse Events: The most frequently reported adverse events included mild headache, fatigue, and dry mouth. These events were observed at comparable rates in both the investigational product group and the placebo group. Preliminary results suggested that symptomatic changes were observed within the first four weeks of administration.
  • Cardiovascular Safety: Participants with pre-existing heart conditions were not included in the primary study population.

Specialized Patient Subgroups

Studies examined the investigational product in participants who had previously received, but not responded to, other established therapies. Findings from comparative studies have explored outcomes of this investigational therapy compared to specific existing treatments.

  • Duration of Therapy: The protocols for the pivotal studies involved administering the investigational product for a duration of 12 weeks.

Frequently Asked Questions (FAQ)

Common questions about Algolider (FAQ)

Q: How quickly does Algolider start to work?

A: According to official product information, the concentration of the medicine reaches its highest level in the bloodstream approximately 2 to 3 hours after a single dose. This time frame indicates when the concentration is highest, which is often associated with the peak of the medicine's effect.

Q: Can Algolider cause dizziness or drowsiness?

A: Official information states that dizziness is a commonly reported side effect. Somnolence (drowsiness) has also been reported, especially in post-marketing data. Official guidance indicates that individuals who experience these effects should avoid driving or operating heavy machinery.

Q: Can Algolider affect my sleep?

A: Trouble sleeping (insomnia) may be a possible side effect, particularly if the medicine is used in combination with stimulant substances like caffeine. If you experience changes in sleep patterns, this should be discussed with a healthcare provider.

Q: What does Algolider do to the body exactly?

A: Algolider is a Nonsteroidal Anti-inflammatory Drug, or NSAID. It works primarily by selectively inhibiting the Cyclooxygenase-2 (COX-2) enzyme. This enzyme plays a key role in the production of chemical mediators that cause pain and inflammation in the body.

Q: Can I take Algolider if I am taking supplements like fish oil?

A: Regulatory documents caution that Algolider is generally not recommended for use with anticoagulant agents due to an increased risk of bleeding. Since some supplements can have blood-thinning effects, for all supplements, it is important to seek advice from a healthcare professional.

Q: Can I take Algolider if I have high blood pressure?

A: Use requires caution. Official information notes that Algolider may reduce the effectiveness of certain blood pressure medications, such as Diuretics, ACE Inhibitors, and ARBs. Furthermore, the medicine may potentially worsen kidney function, particularly in susceptible patients.

Q: What happens if I forget to take my Algolider dose?

A: The general guidance in the patient information leaflet is to skip the missed dose entirely. Official patient information states that a double dose should not be taken to make up for a missed dose. Continue the regular dosing schedule instead.

Q: Can Algolider cause changes in my mood?

A: Adverse reactions affecting the nervous system have been reported. Some post-marketing surveillance data has included infrequent reports of irritability. Any persistent changes in mood or behavior should be brought to the attention of a healthcare professional.

Q: Can I drink coffee while taking Algolider?

A: While the medicine may be used alongside caffeine, official warnings note that consuming caffeine can increase the chances of experiencing side effects such as insomnia (trouble sleeping). Individuals should be mindful of this potential interaction.

Q: Can pregnant women safely use Algolider?

A: Algolider is strictly contraindicated (prohibited) during the third trimester of pregnancy and the entire period of lactation (breastfeeding). For the first and second trimesters, use should be strictly limited to the lowest effective dose for the shortest duration possible.

Q: Can Algolider be crushed or split?

A: Tablets should not be crushed or split. Studies have shown that splitting tablets can lead to excessive variation in the drug content between the halves, meaning the full therapeutic dose may not be consistently received. The granule formulation should be dissolved in water as instructed.

Q: How is Algolider processed by the liver or kidneys?

A: Regulatory documents confirm the medicine is extensively broken down, or metabolized, in the liver. Once processed, the drug and its main metabolite are primarily removed from the body through excretion in the urine.

Q: What if Algolider doesn't seem to be working for me?

A: If no benefit is observed after the shortest possible duration of use, official warnings state that the medicine should be discontinued. Consultation with a healthcare professional is necessary to discuss next steps or alternative treatments.

Q: Is Algolider considered a long-term medication?

A: No, Algolider is intended for short-term use only. Regulatory instructions strictly mandate that the total systemic course of treatment must not exceed 15 days in any single course of therapy.

Q: What medical conditions does Algolider specifically target?

A: Algolider is officially authorized for the treatment of acute pain and for the symptomatic relief of primary dysmenorrhoea (pain associated with menstrual periods). It is typically used as a second-line treatment option.

Q: Is it okay to take Algolider before driving?

A: Patients should exercise caution. Official guidance indicates that if side effects such as dizziness, vertigo, or drowsiness are experienced, the patient should refrain from driving or operating machinery.

Q: Do I need to stop taking other medications before starting Algolider?

A: This is a matter that must be reviewed and determined by a healthcare provider. Official documents prohibit co-administration with several types of medicines, including other NSAIDs and drugs that can be toxic to the liver.

Q: What is the typical age range of people who take Algolider?

A: The medicine is authorized for use in adults and adolescents who are 12 years of age and older. Its use is strictly prohibited in all children under the age of 12.

Q: Can Algolider cause dry mouth?

A: Dry mouth was one of the adverse events frequently reported during the clinical trials for this medicine. If this effect is severe or persistent, it should be discussed with a healthcare provider.

Q: Can Algolider cause problems with my skin?

A: Documented skin-related side effects include common reactions like rash, itching (pruritus), and hives (urticaria). The medicine is also associated with a very rare risk of severe, life-threatening skin reactions.

How should Algolider be stored and disposed of?

How to Store and Dispose of Algolider?

Algolider must be stored according to label instructions to maintain stability. The medicine must be kept below 30 C in a cool, dry environment and protected from light.

Storage Classification Requirement
Temperature Store below 30 C / Room temperature
Protection Keep tightly closed; away from excess heat/moisture
Child Safety Store out of the reach and sight of children

For disposal of unused or expired product, the official guidance is to use a drug take-back program or an approved waste disposal plant. Since Algolider is not on the official flush list, it must not be flushed down the toilet or sink. If a take-back option is unavailable, the medicine should be mixed with an undesirable substance (like coffee grounds or kitty litter) and sealed in a container before being placed in the household trash.

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

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