Advertisements

Альбендазол

Quick links to important sections

Альбендазол

Advertisements

Medically reviewed

Laura Arias

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.

Advertisements

Overview of Альбендазол

Quick Facts

Property Description
Active Ingredient Альбендазол (Albendazole)
Form Oral Tablet (Film-coated)
Pharmacological Class Anthelmintic, Benzimidazole derivative
General Purpose Treatment of parasitic worm infections
Origin Synthetic

Classification and Chemical Identity

Альбендазол is the International Nonproprietary Name (INN) for a synthetic pharmaceutical agent classified as a broad-spectrum anthelmintic and antiprotozoal medication. It is a member of the benzimidazole class of compounds, a group structurally related to other anti-worm drugs. The active ingredient is Albendazole, which is a benzimidazole derivative with the molecular formula C12 H15 N3 O2 S. This drug is a single-component product and is generally issued as a prescription-only medicine (Rx).

Albendazole is utilized for the mass treatment of several major helminth infections globally.


Form and Systemic Action

The medication is most commonly supplied for patient use as an oral tablet or film-coated tablet, designed to be taken by mouth. Albendazole is differentiated from some older anthelmintics because it is designed for systemic absorption, meaning it must be metabolized in the body to work. Each tablet contains the active ingredient Albendazole alongside standard, inactive pharmaceutical excipients.

Albendazole is approved for use against specific systemic parasitic infections. This systemic action is a key feature, as it allows the medicine to treat parasites not only in the gut but also those living in tissues throughout the body.


General Therapeutic Purpose

The primary purpose of Альбендазол is the effective treatment and elimination of various human parasitic infections caused by worms. A typical neutral use scenario for Albendazole involves its application in regions where soil-transmitted helminthiasis is common. The drug achieves its goal by acting as a microtubule-destabilizing agent in the parasite, causing the organism's death and thereby resolving the infection.

Advertisements

What side effects are possible with Альбендазол?

Possible side effects and safety information

The official safety profile for Albendazole, as documented by regulatory authorities, classifies potential adverse reactions based on their frequency of occurrence in clinical use, which may vary between short-term intestinal treatment and long-term systemic regimens.

Adverse Reaction Classification

Frequency Class Key Organ Systems Affected Examples of Reported Effects
Very Common (ge 10%) Nervous System, Hepatobiliary Headache, Elevated Hepatic Enzymes
Common (ge 1% to <10%) Gastrointestinal, General, Skin Abdominal Pain, Nausea/Vomiting, Fever, Reversible Alopecia
Uncommon (>0.1% to <1%) Hepatobiliary, Dermatological Hepatitis, Skin Rash, Diarrhea
Very Rare / Not Known Blood and Lymphatic, Dermatological Aplastic Anemia, Pancytopenia, Stevens-Johnson Syndrome

Serious Adverse Reactions and Safety Constraints

The regulatory labels highlight the potential for certain serious adverse reactions, which are primarily associated with the long-term, higher-dose regimens used for systemic infections. These include Bone Marrow Suppression potentially leading to severe reductions in blood cell counts (e.g., Agranulocytosis), and significant Hepatic Abnormalities such as Acute Liver Failure. These risks necessitate mandatory regulatory monitoring of blood counts and liver enzymes during treatment.

In patients receiving treatment for neurocysticercosis, the inflammatory reaction caused by the parasite's death may lead to elevated Intracranial Pressure and related neurological symptoms, a pattern specifically addressed in official documentation. Due to findings of embryo-fetal toxicity in animal studies, Albendazole is Contraindicated during pregnancy, a strict limitation defined in official prescribing information.

Advertisements

Overdose and Emergency Response

Overdose and When to Seek Help

The following information details the officially documented manifestations of Альбендазол (Albendazole) overdose and the required emergency actions, based strictly on government regulatory documents.

Documented Overdose Manifestations

Manifestations of overdose or effects associated with excessive exposure primarily involve gastrointestinal distress, hematological changes, and liver function disturbances. Documented clinical signs include nausea, vomiting, diarrhoea, and abdominal cramps. Additionally, regulatory information notes effects such as alopecia and elevated hepatic enzymes.

Severe Outcomes and Emergency Actions

Excessive exposure is officially associated with the risk of severe, potentially fatal, blood disorders. The most serious outcomes reported include life-threatening conditions such as Agranulocytosis, Pancytopenia, and Aplastic anemia. Cases of Hepatitis have also been reported.

Management Component Official Regulatory Status
Specific Antidote No specific antidote is available.
Supportive Measures Management involves symptomatic and supportive treatment, including the use of activated charcoal to remove unabsorbed material, if considered appropriate.

Urgent Medical Help Required:

It is officially mandated that you seek immediate medical attention for a known or suspected overdose. You must call emergency services immediately if the individual collapses, has a seizure, cannot be awakened, or experiences severe difficulty breathing, as these symptoms indicate a life-threatening emergency.

Advertisements

Therapeutic Uses of Альбендазол

What Альбендазол Treats: Main Uses and Benefits

The therapeutic scope of Albendazole is relevant for managing a wide range of parasitic infections, including both common intestinal worms and serious systemic diseases. It is relevant in clinical settings that involve acute or unstable symptom patterns associated with the parasitic condition.

The medication is commonly used to help with managing conditions such as neurocysticercosis (infections affecting the brain), echinococcosis (parasitic cysts in the liver or lungs), and common gastrointestinal helminthiasis like roundworm, hookworm, and pinworm. It is commonly applied in scenarios where additional management of discomfort is required due to the presence of these organisms.

The therapy is associated with symptomatic relief, helping patients cope more steadily with symptom fluctuations, as the medicine is relevant for easing symptoms related to organ damage and assisting with managing acute neurological manifestations. It supports the clearance of the parasite, which helps improve digestive comfort and contributes to easing the daily burden of related discomfort. The drug is also utilized for preventive chemotherapy in community settings, applied across domains where additional symptomatic support is needed.


Quick Fact

Relief for: Symptoms related to Systemic and Intestinal Discomfort

Regulatory References

  1. NIH MedlinePlus Drug Information
Advertisements

Eligibility and Restrictions for Use

Official Eligibility and Restrictions for Albendazole

Eligibility Classification Population / Condition
Absolute Contraindication Known hypersensitivity to Albendazole or other benzimidazole drugs.
Absolute Contraindication Pregnant women, due to the potential risk of fetal harm found in animal studies.
Conditional Use Females of reproductive potential must provide a negative pregnancy test before starting treatment and must use effective contraception during therapy and for a specified time after the final dose (e.g., 3 days to 1 month).
Conditional Use Patients with pre-existing hepatic impairment or bone marrow suppression require strict, mandated monitoring of liver enzymes and blood counts during treatment.
Restricted Use Children under 2 years of age are generally not recommended for treatment due to limited clinical experience and insufficient safety data for systemic use.
Caution Required Lactating women should proceed with caution, as the drug and its active metabolite are known to be excreted into human milk.

Eligibility is defined by regulatory guidelines. Use in patients with pre-existing liver disease may increase the risk of severe complications, requiring dosage interruption if monitoring thresholds are exceeded.

Advertisements

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

Regulatory information specifies several documented interactions for Albendazole that primarily affect the systemic exposure of its active metabolite, Albendazole Sulfoxide, or introduce a risk of additive toxicity.

Pharmacokinetic and Pharmacodynamic Interactions

Certain medicinal products are documented to alter the plasma concentrations of Albendazole's active metabolite. Praziquantel, Dexamethasone, and Cimetidine are officially listed as substances that increase Albendazole Sulfoxide exposure (AUC and Cmax). Conversely, anticonvulsants that are enzyme inducers, such as Phenytoin and Fosphenytoin, are documented to decrease the active metabolite’s plasma levels via enhanced metabolism. Theophylline levels may require monitoring, as Albendazole may act as a CYP1A inducer.

Interaction-Related Restrictions

Co-administration with myelosuppressive agents is formally restricted due to the potential for a severe additive myelosuppression risk. This is a primary pharmacodynamic constraint. The official label also includes administration requirements: the medication must be administered with a fatty meal to achieve adequate systemic absorption of the active metabolite. Furthermore, consuming Grapefruit Juice is documented to increase systemic exposure by inhibiting intestinal metabolism. Women of childbearing potential are subject to regulatory contraception requirements due to the potential for fetal harm.

Advertisements

Mechanism of Action

How Albendazole Works: Mechanism of Action

Albendazole, primarily through its active metabolite, Albendazole sulfoxide, exerts its action by selectively binding to the high-affinity site of parasitic beta-tubulin. This molecular interaction inhibits the polymerization of beta-tubulin dimers, preventing the formation of essential microtubules within the susceptible helminths.

The resulting microtubule disruption impairs the function of the parasite's absorptive cells (tegument) and the transport of glucose transporters to the cell membrane. This mechanistic cascade blocks the absorption of glucose, the parasite's primary energy source. The sustained blockade leads to a rapid depletion of the parasite's stored glycogen and a diminished supply of adenosine triphosphate (ATP). This energy deficit causes widespread degenerative changes in the cellular structure and contributes to the progressive immobilization and demise of the helminth.

Advertisements

Dosage and Administration Information

How to Use Albendazole

Albendazole is administered exclusively by the oral route, typically as a tablet. A core principle of its use is the requirement to take the medicine with food, particularly a meal that contains fat. This specific instruction is necessary because taking the drug with a fatty meal significantly enhances the systemic absorption (bioavailability) of its active component.

Dosing and Regimens

Administration frequency and duration are determined by the type of parasitic condition being managed. For certain common intestinal infections, the official regimen involves a single oral dose of 400 mg. For more complex, systemic infections, such as neurocysticercosis or echinococcosis, a multi-day schedule is employed.

Patient Weight Dosing Schedule Maximum Dose Frequency
ge 60 kg 400 mg per dose 800 mg/day Twice Daily (BID)
< 60 kg 15 mg/kg/day 800 mg/day Twice Daily (BID)

Administration Details and Cycles

For weight-based dosing, the total daily amount of 15 mg/kg is divided into two separate doses taken every day. When a patient has difficulty swallowing, the oral tablets may be crushed or chewed and swallowed with a drink of water.

Treatment duration for systemic conditions often involves treatment cycles. For example, in the management of echinococcosis, a course may consist of 28 consecutive days of treatment followed by a 14-day drug-free interval. Completing the entire prescribed course is essential to the administration protocol. If a dose is missed, it should be taken as soon as it is remembered, unless it is nearly time for the next scheduled dose, in which case the missed dose is skipped to avoid taking a double dose.

Advertisements

Recent Clinical Evidence

Research evidence / Overview of studies for Альбендазол

Evidence for use in Systemic Parasitic Infections

This section summarizes the types of clinical trials, systematic reviews, and observational studies that have explored the research structure for systemic parasitic infections, which are those that affect tissues and organs outside the gut.

Neurocysticercosis (NCC) Studies

Research has explored the use of Альбендазол in individuals with Neurocysticercosis (NCC), a condition involving parasitic cysts in the brain. The trials specifically examined outcomes such as cyst resolution, or the measured change in parasite cysts, which was assessed using detailed brain imaging techniques like CT or MRI. Findings describe patterns observed in the studies related to changes in the viability and number of cysts. Research also monitored the frequency of seizure recurrence, with findings being mixed across trials regarding the long-term pattern of seizure frequency. Data are still emerging, and evidence is limited for cysts that have progressed into a transitional or calcification stage.

Cystic Hydatid Disease (Echinococcosis) Studies

Studies explored patients presenting with parasitic cysts in organs such as the liver and lungs, a condition known as Echinococcosis. The primary outcomes monitored included changes in cyst viability, reduction in size, and overall appearance, which were measured using imaging techniques like ultrasonography. Research monitoring often involved patient observation over multiple time intervals. Given the chronic nature of this condition, long-term observational evidence contributes to understanding the progression of cyst status over many years. Efficacy assessment is complicated because the criteria used by researchers to define and measure success were observed in some studies to vary widely.

Evidence for use in Common Intestinal Worm Infections

This section outlines the research focused on soil-transmitted helminthiasis (STH), detailing how large-scale studies and meta-analyses measure outcomes using parasitological endpoints.

Systematic reviews and meta-analyses of existing clinical trials examined common infections such as roundworm, hookworm, and whipworm (T. trichiura). The main research endpoints measured were the Cure Rate (CR) and the Egg Reduction Rate (ERR). Studies report how symptoms evolved in the observed populations, with the measured endpoints for roundworm and hookworm typically showing specific measured endpoints. However, research has consistently described significantly lower measured endpoints when a single-dose regimen was used against the T. trichiura parasite, documenting a lower frequency of specific measured endpoints for that specific worm type.

What is still uncertain about Альбендазол Research

This final section synthesizes the main evidence gaps, inconsistent findings across studies, and areas where more comparative research is needed.

Evidence quality varies across studies, leading to certain findings being mixed. There is limited information for long-term outcomes and the durability of the effect after administration for various parasitic conditions. Comparative evidence is lacking in several areas, including the role of the medicine versus surgical intervention for certain cyst types. Research provides context but not individual predictions, and studies help show what has been observed so far.

Key Studies & References

  1. Albendazole versus Praziquantel in the Treatment of Neurocysticercosis: A Meta-analysis of Comparative Trials - PLOS Neglected Tropical Diseases
  2. Evidence-based guideline: Treatment of parenchymal neurocysticercosis - American Epilepsy Society
  3. Albendazole - StatPearls - NCBI Bookshelf - NIH (Used for FDA-approved indications/populations)
Advertisements

Frequently Asked Questions (FAQ)

Common questions about Альбендазол (FAQ)

Q: Are there any long-term effects associated with taking Альбендазол?

According to official information, the treatment for some serious parasitic infections may require continuous use of the medication over many months or, in rare cases, years. When a prolonged treatment course is necessary, professional monitoring of blood counts and liver function may be recommended or required by official guidelines to monitor for potential adverse effects.

Q: Is it normal to feel a little sick after taking the first dose of Альбендазол?

Official product documents classify nausea and vomiting as common adverse reactions, meaning they occur in 1% to less than 10% of users. Since these are common general reactions, official safety information indicates they may be experienced during the treatment period.

Q: What signs suggest that someone should consult a professional about a reaction to Альбендазол?

Regulatory documents specify that certain severe reactions warrant immediate attention. These include signs like unusual fever, persistent chills, sore throat, or symptoms related to increased pressure inside the skull. If signs of a severe reaction, such as unusual bleeding or bruising, are observed, it is important to seek professional consultation.

Q: Is the safety profile of the liquid suspension different from the tablet form?

The core safety profile and the active ingredient are the same for all formulations. However, specific warnings, such as those related to inactive ingredients or instructions for handling, are detailed in the product documentation for the oral suspension, which may differ slightly from the tablet.

Q: Does Альбендазол interact with common pain relievers?

Regulatory summaries include documentation of potential interactions between Альбендазол and certain common over-the-counter pain relievers, such as paracetamol (acetaminophen). Patients are generally advised to discuss all medications, including pain relief, with a healthcare professional before beginning treatment.

Q: How long does it usually take for Альбендазол to start having its intended effect?

The drug's action begins on a molecular level soon after administration. The active compound, Albendazole sulfoxide, is generated quickly and is systemically active, with an elimination half-life of 8 to 12 hours. This provides a time-related context for when the active medicine is present in the body.

Q: What are general expectations after completing a course of Альбендазол?

General expectations depend entirely on the prescribed regimen and the type of infection. Some intestinal infections may be treated with a single dose, while others require longer regimens. Clinical management protocols recommend observation to assess the outcome, especially after prolonged treatment cycles.

Q: What information is available about the half-life of Альбендазол?

Official pharmacokinetic data, which describes how the body processes the drug, is available. This information indicates that the elimination half-life of the active metabolite, Albendazole sulfoxide, is typically in the range of 8 to 12 hours.

Q: How long does Альбендазол stay in the body after the last dose?

The duration the active compound remains in the body is estimated using its elimination half-life. Official pharmacokinetic documents state that the active metabolite typically has an elimination half-life of 8 to 12 hours.

Q: Is a follow-up test generally expected after treatment with Альбендазол?

For long-term regimens used for systemic infections, professional monitoring of blood counts and liver enzymes may be necessary during prolonged treatment. For systemic conditions, professional follow-up, which may involve testing or imaging, is typically part of post-treatment care to evaluate the final outcome.

Q: How does Альбендазол's mechanism of action compare to other medicines for similar conditions?

The drug is officially classified as a benzimidazole derivative, meaning it is part of a class of anti-worm medications that target the parasite's beta-tubulin. This classification establishes its relationship to other medicines used for similar conditions that share a similar structural or mechanistic basis.

Q: Is there research that examines the use of Альбендазол in pediatric populations?

Yes, regulatory and public health bodies like the CDC and the American Academy of Pediatrics (AAP) publish specific guidelines for its use in children. These guidelines include specific administration and monitoring recommendations, indicating that research has been conducted to establish its utility in pediatric populations.

Q: What makes Альбендазол different from Mebendazole? (Informational)

Although both are in the benzimidazole class, official guidance documents and international summaries describe differences in their presentations and preferred use for specific infections. For example, specific parasitic infections may be preferentially treated with one medicine over the other depending on regulatory guidelines.

Q: Is Альбендазол available over the counter in some countries?

In many regions, including the U.S., the drug is classified as prescription-only (Rx) for human use. However, its classification and availability can vary globally, as it is a key medicine utilized in mass drug administration programs by international health organizations.

Q: Is Альбендазол usually sold under brand names or generically?

Official drug summaries confirm that the active ingredient, Albendazole, is available both under specific well-known brand names (e.g., Zentel or Eskazole) and as a generic drug. This means patients may encounter the medicine sold under different commercial names or as a non-branded generic product.

Q: What is the difference between a tablet and a chewable tablet formulation of Альбендазол?

Official dosing and formulation guides confirm that a specific chewable tablet is available in addition to the standard film-coated tablet. The chewable formulation is typically intended for use in patient populations, such as children, who may have difficulty swallowing a solid tablet whole.

Q: Is it true that Альбендазол is a prodrug?

Official pharmacokinetic information states that the parent compound taken orally is rapidly converted in the body, primarily in the liver, into its active form, Albendazole sulfoxide. This process of needing to be metabolized to the active compound is a documented feature of its systemic action.

Q: What is the relationship between Альбендазол and the drug Ivermectin? (Informational)

Official guidelines from health bodies like the World Health Organization (WHO) formally recommend the two drugs be used together in specific combination regimens. This combination is primarily used in large-scale public health campaigns targeting certain types of parasitic infections.

Q: Does the official labeling for Альбендазол mention anything about driving or operating machinery?

Yes, some official labeling and patient information include cautions regarding driving or operating machinery. This warning is due to the risk of side effects such as dizziness, which has been reported and could affect the ability to safely perform these tasks.

Q: What are the different strengths or concentrations of Альбендазол available?

The medication is commonly supplied in two primary forms with documented strengths: oral tablets, typically available in a 400 mg strength, and a liquid oral suspension, which is generally supplied at a concentration of 200 mg per 5 mL.

Q: Are there official recommendations regarding alcohol consumption while using Альбендазол?

Official safety information advises caution regarding alcohol use during treatment. This advice is rooted in the drug’s known potential to affect liver function, and avoiding alcohol helps minimize the potential for additive risk to the liver.

Q: What is the role of Альбендазол in veterinary medicine compared to human use?

The compound is used in veterinary medicine to treat parasitic infections in livestock such as sheep, cattle, and goats. While the active chemical is the same, the product formulations and administration guidelines are different from those approved for human use.

Q: Does Альбендазол carry a Boxed Warning in the US or similar official caution elsewhere?

While the term 'Boxed Warning' may not be explicitly present in all regulatory summaries, official documents emphasize the potential for severe risks. The most serious cautions highlighted are the potential for bone marrow suppression and significant liver abnormalities.

Q: Is there evidence that certain population groups may react differently to Альбендазол?

Regulatory warnings require cautious use in patients with pre-existing hepatic (liver) impairment or bone marrow suppression due to potential complications. Furthermore, pharmacokinetic studies document extensive variation in how different individuals process the active compound.

Q: Are there different recommended storage temperatures for the tablet vs suspension?

Yes, the official documentation provides separate storage instructions to ensure the stability of the product. The specific temperature and protection requirements from light are detailed individually for the oral tablet versus the liquid suspension formulation.

Q: Is the absorption of Альбендазол affected by stomach acid levels?

Official pharmacokinetic studies confirm that the drug’s ability to dissolve and be absorbed into the bloodstream is influenced by the acidity (pH levels) of the stomach. This factor is distinct from the mandatory requirement to take the medicine with a fatty meal to enhance overall absorption.

Advertisements

How should Альбендазол be stored and disposed of?

How to Store and Dispose of Albendazole

Albendazole must be stored according to specific requirements to maintain its stability. The medication should be kept at or below 25 C (some products specify below 30 C) and must be protected from light. To ensure light protection, always keep the container or blister packaging within its original outer carton.

Key Storage and Handling Instructions

  • Temperature: Store below 25 C.
  • Protection: Keep in the original packaging/outer carton to protect from light.
  • Children: Keep this medicine out of the sight and reach of children.

Disposal Requirements

Proper disposal is required to protect the environment. Do not dispose of this medicine in household waste or flush it down a toilet. Instead, ask your pharmacist for instructions on how to dispose of unused or expired Albendazole safely. Following these measures helps prevent environmental contamination.

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

Available in countries:

Equivalent of Альбендазол found in:

A-Z Index: