Analgin Sopharma

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Analgin Sopharma

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Overview of Analgin Sopharma

Analgin Sopharma is a synthetic pharmaceutical preparation manufactured by Sopharma, defined by its primary therapeutic component, Sodium Metamizole. It is classified as a potent non-opioid analgesic and antipyretic, primarily designed to provide effective relief from severe pain and to reduce fever. The drug is typically available as a prescription-only (Rx) medicine in many regions.


Quick Facts

Property Description
Active ingredient Sodium Metamizole (Dipyrone)
Form Tablets, Injectable solution
Pharmacological class Non-opioid Analgesic, Antipyretic
General purpose Severe pain and fever management
Origin Synthetic (Pyrazolone derivative)

What Type of Medicine is Analgin Sopharma?

Analgin Sopharma belongs to the pyrazolone derivative chemical class, with its active ingredient frequently known internationally as Dipyrone or Metamizole sodium. The official chemical identity is defined by international standards, confirming its classification. This classification places it outside the typical group of pain relievers, such as paracetamol or traditional acidic NSAIDs (Non-Steroidal Anti-Inflammatory Drugs). Its distinction as a nonacid nonopioid is important because its mechanism of action is clinically recognized as primarily involving the central nervous system, rather than localized peripheral effects.


Composition and Available Forms

The preparation is generally a single-ingredient product, consisting solely of Sodium Metamizole and necessary excipients. The drug is available in several pharmaceutical preparations, including solid tablets for oral intake and a sterile injectable solution (utilizing Water for injection) for administration via the intramuscular or intravenous route of administration. Metamizole formulations are utilized for their analgesic and antipyretic efficacy across various clinical settings.


General Therapeutic Purpose and Primary Benefit

The general therapeutic purpose of Analgin Sopharma is the symptomatic management of severe pain and the effective correction of an elevated body temperature (fever). Its central action provides a powerful analgesic effect and a reliable antipyretic action. Additionally, Sodium Metamizole possesses distinct spasmolytic properties, a feature that differentiates its general benefit by helping to ease discomfort associated with the cramping or tightness of smooth muscles in internal organs. This highlights its dual capability for relieving both pain and associated spasms.

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What side effects are possible with Analgin Sopharma?

Possible Side Effects and Safety Information

Analgin Sopharma, which contains Sodium Metamizole (Dipyrone), has a safety profile defined by serious, albeit rare, risks and specific population constraints, as detailed in official regulatory documentation.


Serious Adverse Reactions

The primary serious risk documented by regulatory authorities concerns the Blood and Lymphatic System, specifically agranulocytosis, a severe reduction in white blood cells. This effect is classified as rare or very rare and is a critical safety focus. Regulatory information emphasizes that this risk is not dose-dependent and can occur at any time during or shortly after treatment. Other documented serious reactions include anaphylactic shock, which is a severe systemic allergic reaction, and life-threatening skin conditions such as Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN).


Other Adverse Reactions and Organ Systems

Adverse reactions are officially documented across several System-Organ Classes. These include the Hepatobiliary System (with documented cases of acute hepatitis and liver failure) and the Vascular System, which may exhibit isolated hypotensive reactions (a drop in blood pressure), particularly during rapid administration. More frequently observed effects involve the Gastrointestinal System, such as nausea and vomiting, and the Nervous System, which may experience dizziness or drowsiness.


Population-Specific Safety Constraints

Official labeling defines specific constraints for certain groups. Use of Metamizole is advised against during the third trimester of pregnancy due to documented risks to the newborn’s renal and circulatory systems. The medication is also not recommended for individuals with severe hepatic or renal impairment or those with a history of hypersensitivity to Metamizole or related pyrazolone medicines. The safety information also notes an increased risk when used with certain co-administered medicines, such as myelosuppressive agents.

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Overdose and Emergency Response

Overdose and When to Seek Help

The following information on Metamizole (Analgin Sopharma) overdose is strictly based on documented descriptions from authoritative government regulatory sources.

Overdose may present with a cluster of symptoms, primarily affecting the gastrointestinal tract and the nervous system. Documented overdose manifestations include common complaints such as nausea, vomiting, and epigastric distress, alongside Central Nervous System (CNS) effects like somnolence and dizziness.

Severe Outcomes and Emergency Action

Regulatory documents emphasize that severe outcomes are possible, particularly concerning the circulatory and renal systems. Life-threatening effects include profound hypotension (low blood pressure) potentially leading to shock, convulsions (seizures), and acute renal failure.

Immediate medical attention is required upon the suspicion of overdose. This urgency applies especially if severe symptoms, such as significant cardiovascular compromise or neurological disturbances, manifest. Since no specific antidote is known, management is focused on supportive care.

Management Focus Regulatory Description
Emergency Intervention Seek immediate medical attention for suspected overdose
Procedural Steps Symptomatic and supportive treatment, with possible gastrointestinal decontamination (e.g., activated charcoal or gastric lavage) for recent ingestion
Patient Monitoring Intensive monitoring of cardiac and renal function is typically required

It is officially noted that patients with pre-existing hepatic or renal impairment may face increased toxicity and severity in an overdose situation.

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Therapeutic Uses of Analgin Sopharma

What Analgin Sopharma Treats: Main Uses and Benefits

Analgin Sopharma plays a role in symptomatic relief across three key therapeutic domains: managing intense pain, easing muscle spasms, and reducing high fever. It is generally applied in clinical settings marked by heightened patient distress where supportive symptom management is needed. Analgin Sopharma is commonly used for managing moderate to severe pain and fever, consistent with established therapeutic practice.

This medication is utilized to address pronounced symptoms arising from diverse sources, including symptoms related to discomfort after surgery, symptoms related to discomfort after injury, intense headaches, dental pain, and nerve pain. Its unique spasmolytic property is relevant for painful episodes characterized by the involuntary tightening of smooth muscles, such as acute renal colic and biliary colic. The core benefit is offering analgesic support that contributes to easing the symptom load and supports the patient during difficult episodes.

It provides antipyretic support for hyperthermia and symptoms associated with heightened physiological activity. This may assist with easing discomfort during periods of acute illness.


Quick Fact: Relief for Symptoms of Significant Discomfort and Fever

Analgin Sopharma is considered relevant in conditions presenting with symptoms of heightened discomfort where short-term symptomatic assistance is needed.

Regulatory References

  1. European Medicines Agency
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Eligibility and Restrictions for Use

Analgin Sopharma, which contains the active substance metamizole sodium, is indicated for the treatment of severe pain and high fever that is unresponsive to other medications. Its use is generally intended for adults and adolescents 15 years of age and older, or those weighing over 53 kg, following consultation with a healthcare professional.


Who Should NOT Use Analgin Sopharma?

The medicine is contraindicated and should be avoided in individuals with:

Condition Reason for Contraindication
Allergy/Hypersensitivity To metamizole, other pyrazolone derivatives (e.g., phenazone), or any of the product’s excipients.
Blood Disorders Conditions like agranulocytosis, leukopenia, or impaired bone marrow function.
Organ Dysfunction Severe liver or kidney impairment.
Genetic Deficiencies Hereditary hemolytic anemia related to Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency.
Asthma/Allergies Individuals who experience bronchospasm or anaphylactoid reactions (e.g., hives, rhinitis) when taking other non-steroidal anti-inflammatory drugs (NSAIDs) like aspirin.
Pregnancy/Breastfeeding Use is strictly contraindicated in the third trimester of pregnancy due to risk of harm to the fetus (e.g., renal impairment, closure of the ductus arteriosus). It should also be avoided during breastfeeding as breakdown products are excreted in breast milk.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

Analgin Sopharma (Sodium Metamizole) has officially documented interaction patterns that are classified based on their underlying mechanisms and clinical relevance in regulatory documents.

Pharmacokinetic and Pharmacodynamic Interference

Metamizole is documented as a moderate to strong inducer of CYP3A4, CYP2B6, and CYP2C19 enzymes, which is a pharmacokinetic interaction that significantly reduces the systemic exposure (AUC) of co-administered medicines that are substrates for these enzymes. Drugs whose levels are reduced include the immunosuppressant Ciclosporin and the sedative Midazolam. This effect may lead to sub-therapeutic concentrations and potential treatment failure for the co-administered drug.

A critical pharmacodynamic interference occurs with Acetylsalicylic acid (ASA) used for cardioprotection, as Metamizole inhibits ASA's anti-platelet aggregation effect. Regulatory advice often requires the separation of administration times to preserve ASA's full anti-thrombotic efficacy.

Interaction-Related Restrictions and Toxicity

Co-administration with Methotrexate carries an officially stated additive risk for severe haematologic toxicity, including bone marrow aplasia. Furthermore, the medicine is contraindicated in patients with a history of agranulocytosis induced by Metamizole or related pyrazolone or pyrazolidine substances. Consumption of alcohol is officially noted to increase the risk of severe adverse effects.

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Mechanism of Action

Central Modulation of Pain and Temperature

Analgin Sopharma's mechanism is driven by its active metabolites, primarily MAA and AA, which operate through central nervous system (CNS) modulation and peripheral smooth muscle relaxation. This domain is defined by the inhibition of the Cyclooxygenase-3 ( COX-3) enzyme, which primarily suppresses the synthesis of Prostaglandin E2 ( PGE2) within the brain and spinal cord. Additionally, the metabolites modulate pain signaling by engaging the endocannabinoid ( CB1) and endogenous opioidergic systems, contributing to an elevation of the nociceptive threshold and a reset of the hypothalamic thermoregulatory setpoint.

Visceral Smooth Muscle Relaxation

This distinct peripheral domain involves a molecular cascade in smooth muscle tissues. The metabolites interfere with the signaling required for contraction by suppressing the release of Intracellular Calcium ( Ca^2+). This molecular action results in visceral smooth muscle relaxation, modulating the contractile state of smooth muscle tissue.

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Dosage and Administration Information

The proper administration of Analgin Sopharma (Metamizole Sodium) is structured around its available forms and routes of delivery. The medicine is primarily used via oral intake (tablets or drops) or through parenteral routes, specifically intramuscular (IM) and intravenous (IV) injection.

For adults, the typical single dose ranges from 500 mg to 1,000 mg. This single dose may be repeated up to four times daily on an as-needed basis, provided a minimum time interval is observed. The total intake does not exceed the maximum daily dose, which is generally established at 4,000 mg for oral administration. Oral forms may be taken after meals, and the lowest effective dose is generally chosen to manage symptoms.

When administered parenterally, the intravenous injection involves specific procedural conditions: it is administered slowly.

Specialized dosing rules apply to vulnerable populations. For older adults and patients with impaired renal or hepatic function, a reduction in dose or an extension of the dosing interval is typically applied to account for potential delays in metabolite excretion. Pediatric dosing is calculated on a body weight basis, generally utilizing 8 to 16 mg per kilogram of body weight as a single dose.

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Recent Clinical Evidence

Analgin Sopharma (Metamizole): Overview of Clinical Evidence

Analgin Sopharma contains metamizole, a non-opioid analgesic and antipyretic agent. Clinical research and systematic reviews have explored its role in managing acute pain, fever, and muscle spasms across various populations.


Efficacy and Short-Term Use

Clinical trials primarily evaluate the short-term analgesic effect of metamizole, often in hospital settings for acute postoperative pain or colic pain. A systematic review reported that a single dose of 500 mg of oral metamizole provided significant pain relief compared to placebo for approximately 70% of adults with moderate or severe acute pain. Studies also suggest its efficacy in reducing high fever refractory to other treatments.

Research indicates that metamizole may be comparable to non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief in certain conditions, such as acute low back pain, while potentially having a more favorable profile regarding gastrointestinal side effects compared to non-selective NSAIDs.


Safety and Adverse Events

The most significant safety concern associated with metamizole is the rare but potentially fatal adverse event, agranulocytosis (a severe reduction in white blood cells). Due to this risk, metamizole use is banned or restricted in several countries, including the United States and the United Kingdom, but remains available in many others, including Bulgaria.

Reported risk estimates for metamizole-associated agranulocytosis vary widely across regions and studies, ranging from very low (less than one case per million administrations) to higher incidence rates.

Research regarding other potential adverse outcomes is often limited by small sample sizes and overall study quality. The most commonly reported, non-serious side effects in clinical trials are typically mild gastrointestinal upset and hypersensitivity reactions.

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Frequently Asked Questions (FAQ)

Common questions about Analgin Sopharma (FAQ)


Q: Why is Analgin Sopharma used more often in some countries than others?

Official regulatory documentation indicates that the availability of Analgin (metamizole) varies globally due to its unique benefit-risk profile. While some countries have restricted or banned its use due to the rare but serious risk of agranulocytosis (a severe blood disorder), other regions maintain its availability, often citing its strong analgesic efficacy and an acceptable profile regarding certain gastrointestinal side effects.


Q: What is the difference between Analgin Sopharma and acetaminophen?

The official classification of Analgin (metamizole) highlights its distinction from common pain relievers like acetaminophen. A key difference is its documented spasmolytic property, which is associated with the relief of muscle cramps and spasms in internal organs, in addition to its strong analgesic and antipyretic actions. The two substances belong to different chemical groups and have distinct safety profiles.


Q: What kind of studies have been done on the long-term safety of Analgin Sopharma?

Regulatory documents specify that Analgin is primarily intended for short-term use, typically a maximum of seven days. The official safety guidance states that when a longer duration of use is medically necessary, periodic hematological monitoring (checking white blood cell count) is required to detect potential serious adverse effects early.


Q: Can Analgin Sopharma be used by children?

Official product information generally sets the minimum age for use at 15 years old (or those weighing over 53 kg). For individuals below this limit, dosage determination is complex and requires specialized consideration based on body weight, as defined in regulatory procedures for pediatric populations.


Q: Does Analgin Sopharma have sedative properties?

Analgin is not officially classified or indicated as a sedative medication. However, official safety documentation lists side effects such as dizziness and drowsiness (somnolence), which are indications of how the drug can affect the central nervous system. These effects are documented adverse reactions, not a primary therapeutic goal.


Q: Can Analgin Sopharma affect sleep?

Yes, official safety information indicates that Analgin can potentially affect alertness and the sleep cycle. Drowsiness (somnolence) is listed as a possible side effect in the official product documents, which reflects an effect on the central nervous system.


Q: Are there specific symptoms that mean I should stop taking Analgin Sopharma immediately?

Yes, regulatory documents describe specific situations that require immediate cessation of use. If signs of a serious blood disorder, such as unexplained fever, chills, sore throat, or painful sores on the moist inner surfaces (mucosa) develop, the official guidance requires the medicine to be stopped immediately and medical attention sought. These symptoms are key warning signs for conditions like agranulocytosis.


Q: Is Analgin Sopharma manufactured only by Sopharma?

Analgin Sopharma is a specific brand name owned by the Sopharma manufacturer. The active ingredient within the tablets, metamizole (also known as dipyrone), is a generic compound that is produced and sold by many pharmaceutical companies globally under various different brand names.


Q: Has Analgin Sopharma been studied for use in chronic pain conditions?

Official therapeutic indications state that the drug is used for both acute severe pain and certain chronic pain conditions where other therapeutic options are not suitable or have proven ineffective. Regulatory guidance often emphasizes that, regardless of the indication, use is generally restricted to short periods due to associated safety constraints.


Q: Are there any specific lifestyle factors mentioned in relation to using Analgin Sopharma?

The official product information mentions a specific warning regarding alcohol consumption. Regulatory documents state that consuming alcohol while taking the drug may increase the risk of experiencing severe adverse effects, and concurrent use is noted to be discouraged.


Q: How quickly should I expect Analgin Sopharma to start working?

Official data on the absorption of the medicine indicates a relatively rapid action. Following oral intake, the maximum concentration of the main active substance in the blood is usually reached within a window of 1.4 to 2.0 hours after administration. This timeline provides an indication of when the peak effect may be expected.


Q: How long does the effect of Analgin Sopharma usually last?

According to official pharmacological data, the pain and fever-reducing effects of the drug typically last between 4 and 6 hours. The duration of action is one factor considered when establishing the regulated minimum time interval between administrations.


Q: What does the research say about Analgin Sopharma for headaches?

In addition to severe pain like colic or post-operative pain, official therapeutic indications in certain regions include the treatment of severe headaches and acute migraine attacks. Its inclusion for these conditions aligns with its defined strong central analgesic action.


Q: Is Analgin Sopharma known to cause dependence?

Analgin (metamizole) is officially classified as a non-opioid analgesic. While its mechanism affects certain pain pathways shared with opioids, regulatory classification does not identify it as a controlled substance with the potential for dependence commonly associated with traditional opioid medications.


Q: What are the official guidelines for stopping the use of Analgin Sopharma?

Official regulatory guidance dictates specific circumstances that require immediate treatment cessation. If a patient develops symptoms of a potential serious adverse effect, such as an unexplained fever, chills, or a sore throat, the official documentation requires the drug to be discontinued immediately and medical attention sought.


Q: Does the efficacy of Analgin Sopharma change with long-term use?

The official documentation advises for short-term use, noting that prolonged application is associated with an increased risk of severe adverse effects. Any decision regarding continued use must be made by a physician, as the necessity for efficacy must be continually weighed against this established safety risk.


Q: Does Analgin Sopharma have any effect on inflammation?

Official pharmacological summaries indicate that Analgin is not primarily used for its anti-inflammatory action. Although sometimes categorized as an atypical Non-Steroidal Anti-Inflammatory Drug (NSAID), its anti-inflammatory effects are considered weak or irrelevant at therapeutic doses. Its main purpose is analgesic (pain relief), antipyretic (fever), and spasmolytic.

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How should Analgin Sopharma be stored and disposed of?

Official Storage and Disposal Requirements

Analgin Sopharma (Metamizole sodium) is subject to strict regulatory requirements for storage and disposal, as defined in official governmental documentation.

Storage and Handling

The product must be stored in a dry and well-ventilated place, with containers kept tightly closed to maintain product stability and integrity. It is officially required to be stored locked up to prevent unintended access, aligning with child-safety measures. Handling procedures emphasize the use of protective equipment and mandate that individuals read and follow all safety instructions before use, particularly avoiding direct contact and dust formation.

Disposal and Environmental Protection

Final disposal of the product and its container must be managed through an approved waste disposal plant or hazardous waste collection point, strictly following local, regional, national, and international regulations. Release to the environment, including into drains or surface water, is prohibited due to the product's official classification as toxic to aquatic life.

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

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