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Nemasole AD

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Nemasole AD

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Method of action: Anthelmintic

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.

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Overview of Nemasole AD

Quick Facts

Property Description
Active ingredient Mebendazole
Form Oral Tablet or Chewable Tablet
Pharmacological class Anthelmintic (Benzimidazole derivative)
Common use Elimination of parasitic worm infections
Origin Synthetic organic compound

What Type of Medicine is Nemasole AD?

Nemasole AD is a specific pharmaceutical preparation manufactured by Drobifarm/Alfabeta (Argentina), distinguished by its formulation around the core active ingredient Mebendazole (MBDZ). The drug is formally classified as an anthelmintic agent, a type of medication used to eliminate parasitic worms (helminths) from the body. Mebendazole is a synthetic organic compound derived from the benzimidazole chemical group. Mebendazole is widely recognized for its clinical necessity and established global use in medical settings.

What is the Composition and General Purpose of Nemasole AD?

The medication’s composition centers on the singular active component Mebendazole, which is predominantly delivered as an oral dosage form, specifically a tablet or chewable tablet, utilizing inert pharmaceutical excipients. The overarching general purpose of Nemasole AD is to provide a method for the elimination of intestinal parasitic infections. Mebendazole is characterized by its activity against various nematodes, which supports its role in clearing infectious agents from the host's digestive system. The chewable tablet form represents a unique feature, often simplifying administration for patient groups who may have difficulty swallowing.

How Does Nemasole AD Function at a High Level?

Mebendazole’s selective mechanism is characteristic of the benzimidazole class and is clinically recognized for its targeted action. It works by acting as an inhibitor of tubulin polymerization, which is central to the parasite’s cell structure. By disrupting the formation of vital cellular structures and concurrently blocking the uptake of glucose, Mebendazole essentially starves and incapacitates the worm. This highly specific action positions Nemasole AD as a broad-spectrum and efficient agent, designed to act locally within the gastrointestinal tract with limited systemic effects on the host.

Regulatory References

  1. NIH MedlinePlus Drug Information on Mebendazole
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What side effects are possible with Nemasole AD?

Possible Side Effects and Safety Information

The safety profile of Nemasole AD, based on its active ingredient Mebendazole, is organized in regulatory documents by the frequency of reported adverse reactions and the system or organ class affected. The most frequently documented reactions are categorized as Common, primarily involving Gastrointestinal Disorders, such as abdominal pain and diarrhoea. Other reactions like nausea, vomiting, and rash are classified as Uncommon.

Serious Adverse Reactions and Safety Constraints

Official labeling documents contain warnings regarding serious adverse reactions, which are reported rarely or with an unknown frequency (post-marketing). These include severe reactions affecting the blood, such as agranulocytosis and neutropenia, and severe cutaneous adverse reactions like Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN). Hepatic effects, including hepatitis, are also documented as potential serious reactions.

Dose-Related Safety Patterns: The serious hematologic effects (neutropenia and agranulocytosis) have been reported specifically with use at higher doses and for more prolonged durations than those required for common infections. The official profile also notes that concomitant use with the medicine metronidazole should be avoided due to an increased risk of SJS/TEN.

Population-Specific Considerations: Regulatory information states that the safety and effectiveness of the medicine have not been established in children under one year of age, noting specific post-marketing reports of convulsions in this infant population. Caution is also noted for individuals with impaired hepatic function due to the potential for increased drug levels in the bloodstream.

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Overdose and Emergency Response

Overdose Manifestations and Risks

Official regulatory documents indicate that an acute overdose of Nemasole AD (Mebendazole) may present as an exacerbation of common gastrointestinal symptoms, which can include severe nausea, vomiting, diarrhea, stomach pain, and abdominal discomfort or swelling.

A critical risk is documented with the ingestion of dosages substantially above those recommended or with prolonged treatment. In these specific scenarios, the overdose profile includes potentially severe systemic and laboratory findings. These documented serious outcomes are reversible liver function disturbances, hepatitis, and hematological toxicity, such as neutropenia (low white blood cell count) and agranulocytosis.

When Immediate Medical Help is Required

Regulatory guidance mandates that immediate medical attention must be sought for any suspected Nemasole AD overdose. Emergency services must be called immediately if the individual exhibits critical neurological or respiratory signs.

Immediate Emergency Actions:

  • Call emergency services (911 or local equivalent) if the person is collapsed or having a seizure.
  • Seek urgent help if the person has trouble breathing or cannot be awakened.
  • Contact a Poison Control center for specialized guidance.

Management Protocol: Regulatory information states that no specific antidote is known for Nemasole AD overdose. Consequently, treatment is focused on being symptomatic and supportive, often requiring medical observation and monitoring for the documented hepatic and hematological complications.

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Therapeutic Uses of Nemasole AD

What Nemasole AD Treats: Main Uses and Benefits

Nemasole AD is commonly used across therapeutic domains involving certain distressing symptoms. The medicine is applied in addressing conditions marked by increased physiological stress associated with parasitic infections. This information is considered relevant to the general therapeutic context of the medication. The therapeutic benefit is associated with the management of the parasitic agent, which may help support the interruption of the infection cycle and assists with reducing the risk of recurrent manifestations.

The medication is relevant for managing symptom clusters that create noticeable physiological strain, particularly those related to physical discomfort, cramping, and perianal irritation. The use is commonly applied in scenarios requiring additional symptomatic assistance in contexts involving heightened systemic burden. The benefit contributes to improved day-to-day comfort by managing symptom clusters that create noticeable physiological strain.

Quick Fact: Supportive Relief for Symptom Domains

Symptom Domain Practical Benefit
Gastrointestinal Is relevant for managing symptoms related to physical discomfort.
Irritative States Contributes to easing symptoms related to inflammatory or irritative states.
Systemic Strain May assist with managing symptoms related to systemic imbalance.
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Eligibility and Restrictions for Use

Who Can and Cannot Use Nemasole AD?

This medicine's eligibility is strictly defined by regulatory authorities based on age, allergies, and certain physiological states. The active ingredient, Mebendazole, is approved for use in adults and children aged 2 years and older under standard labeled conditions.


Official Contraindications (Must Not Use)

Classification Population/Condition
Absolute Contraindication Individuals with known hypersensitivity or allergy to Mebendazole or any of the product's inactive ingredients.
Prohibited Age Group Infants below the age of 1 year (use is not recommended due to insufficient safety data).
Drug Interaction Concurrent use with Metronidazole (avoided due to increased risk of serious skin reactions).

Eligibility Restrictions

Pregnancy and Lactation: Regulatory status for pregnant individuals varies by region; some authorities formally contraindicate use, while others advise use only if the potential benefit justifies the potential risk. Caution is generally advised for use while breastfeeding.

Conditional Use: Individuals with hepatic impairment (liver disease) are advised to use the medicine with caution, as systemic exposure to Mebendazole may be increased. Use in children aged 1 to 2 years is generally not recommended but may be considered only if the medical benefit significantly outweighs the potential risk.

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What should I know about interactions with other medicines?

The regulatory profile for Nemasole AD (Mebendazole) is structured around specific drug-drug and pharmacokinetic alterations documented in official government labeling. A formal restriction is placed on the co-administration of Nemasole AD with Metronidazole (an antimicrobial agent); this combination should be avoided due to documented reports of an increased risk of serious toxicodynamic skin reactions, including Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN).

Interaction Type Interacting Substance Official Regulatory Outcome
Exposure Increase (PK) Cimetidine Inhibits metabolism, resulting in increased plasma concentrations of Nemasole AD.
Exposure Decrease (PK) Carbamazepine, Phenytoin Induces hepatic metabolism, resulting in decreased plasma levels of Nemasole AD.
Non-Drug Factor High-Fat Meal Increases the bioavailability and systemic absorption of Mebendazole.

These pharmacokinetic patterns define the interaction constraints. Concurrently administered substances classified as inducers of hepatic metabolism are associated with reduced Mebendazole exposure. Conversely, metabolic inhibitors are associated with increased exposure. Furthermore, official documents note that impaired hepatic function or biliary elimination may lead to higher systemic Mebendazole plasma levels, which is a population-specific consideration for interaction risk.

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Mechanism of Action

Molecular Targeting of the Parasite's Cytoskeleton

Nemasole AD works by engaging a core molecular mechanism within the parasitic cell: the structural assembly of its internal framework. The active ingredient, Mebendazole, binds with high affinity to the parasite's beta-tubulin protein, preventing the polymerization of these units into functional microtubules. This mechanism is central to the drug's activity, as the molecule displays significantly lower affinity for the host's (human) beta-tubulin, which results in selective action against the parasite. The resulting loss of the cytoskeleton leads to the rapid disintegration of the worm’s absorptive and secretory cells.


Cascade to Energy Deprivation and Immobility

The structural damage caused by inhibited microtubule formation initiates a cascade resulting in functional failure in the helminth. The disruption of the cellular membrane systems, particularly those in the intestinal and tegumental cells, causes an irreversible blockade of glucose uptake. Since glucose is the parasite’s main energy source, this mechanism interrupts the supply of fuel. The resulting rapid depletion of stored energy (glycogen) leads to the immobilization and eventual mortality of the parasitic organism.

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Dosage and Administration Information

How Nemasole AD is Used

Nemasole AD (Mebendazole) administration follows a precise, short-term protocol, focusing exclusively on the official oral route. The usage pattern is determined by the specific parasitic infection being addressed, requiring either a single intake or a course of three consecutive days.

Official Dosing Patterns

The standard dosing for Nemasole AD is highly specific and applies to adults and children above defined age thresholds. The same schedule is generally followed for children 2 years of age and older. Administration is not recommended for children below the age of 1 year.

Indication Standard Regimen Course Duration Re-treatment Timing
Pinworm (Enterobiasis) 100 mg single oral dose 1 day Second course after 2 to 4 weeks if not cured
Whipworm/Roundworm/Hookworm 100 mg twice daily (morning and evening) 3 consecutive days Second course after 2 to 4 weeks if not cured

Administration Conditions and Preparation

The medicine may be taken with or without food (without regard to meals), and no special procedures, such as fasting or purging, are required. The tablet may be chewed, swallowed whole, or crushed and mixed with a small amount of food or liquid for patients who have difficulty swallowing. For pediatric use, an adult must always supervise the intake, and the tablet should be crushed if necessary.

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Recent Clinical Evidence

Research Evidence: Overview of Studies for Nemasole AD

This section provides a narrative overview of the formal clinical research structure evaluated for Mebendazole, the active component in Nemasole AD. Content is strictly limited to the types of studies conducted, the populations assessed, and the outcomes monitored, without summarizing results, stating benefits, or offering therapeutic recommendations.


Evidence for Use in Treating Intestinal Parasitic Infections

Research concerning Nemasole AD was studied for the management of infections caused by Roundworm, Pinworm, Hookworm, and similar nematodes. Research has explored the drug's profile primarily through Randomized Controlled Trials (RCTs). The studies monitored results related to the observed change in the presence of the parasitic agent itself. Researchers used measures known as the Parasitological Cure Rate and the Egg Reduction Rate.

Findings describe patterns observed in the studies where post-treatment parasitological measurements met established endpoints for the specific organisms studied. However, findings indicated heterogeneity in outcomes across different types of infections, suggesting that the measured results may vary across the different parasite types.


Evidence in Special Populations: Who Was Included in the Research

Mebendazole was evaluated in studies involving various age groups and at-risk populations. Research examined its use extensively in school-aged children within the context of large-scale treatment programs. Data for research in certain groups remain insufficient. For instance, evidence is limited for older adults and patients with complex or underlying health conditions. Findings indicate that while a substantial body of evidence was evaluated in the pediatric group, results apply only to the populations studied, and subgroup findings are uncertain, contributing to limited information for non-core populations.


What Is Still Uncertain About Nemasole AD

Evidence remains limited regarding the long-term outcomes associated with Nemasole AD, as follow-up durations were limited, typically monitored within a few weeks. Long-term effects are not fully established. Furthermore, uncertainty remains regarding the measured outcomes related to the clearance of specific parasite species. Research is ongoing to explore the potential for the parasites to develop reduced sensitivity to the drug class, especially in areas with widespread use.

Key Studies & References

  1. Mebendazole - StatPearls - NCBI Bookshelf
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Frequently Asked Questions (FAQ)

Common questions about Nemasole AD (FAQ)


Q: Is Nemasole AD only prescribed for severe cases of the condition it treats?

Official product information defines the use of Nemasole AD for the treatment of specific parasitic infections, such as pinworm and roundworm.

Regulatory documentation does not qualify the severity of the condition for which the drug is prescribed.

Q: Is Nemasole AD used for conditions other than its main indication?

The official use of Nemasole AD is specifically limited to the treatment of infections caused by certain parasitic worms, such as pinworm and roundworm.

Regulatory documents define these indications and do not list other approved uses for the medication.

Q: How is Nemasole AD generally described in official health documents?

Official health documents generally describe Nemasole AD as an anthelmintic agent, meaning it is an anti-worm medication.

It works by disrupting the internal structure and metabolism of the parasite to eliminate the infection.

Q: Is Nemasole AD considered a new medication or an established treatment?

The active ingredient in Nemasole AD, Mebendazole, is included on the World Health Organization's List of Essential Medicines.

This indicates that the drug is considered an established and necessary pharmaceutical agent in clinical settings worldwide.

Q: How fast should a patient expect Nemasole AD to start having an effect?

According to official product information, the drug is understood to target the parasite’s internal structures quickly.

However, the time required for a patient to notice symptomatic relief or achieve full parasite clearance can take up to a few weeks.

Q: What is the typical time frame for reaching the full expected effect of Nemasole AD?

The typical time frame for determining the effectiveness of the medicine in clinical settings is typically based on study protocols.

These studies often evaluate parasite clearance, sometimes called a 'test-of-cure,' approximately two to four weeks after the initial course of treatment.

Q: Is it normal to feel a change in symptoms immediately after starting Nemasole AD?

It is common for patients to feel a change in symptoms, such as transient abdominal pain or diarrhea, shortly after starting the medication.

These effects are often associated with the drug's action against the parasites and their subsequent expulsion from the body.

Q: Do Nemasole AD side effects usually go away over time?

Official information describes the most common side effects, such as abdominal pain and diarrhea, as transient symptoms.

Regulatory labeling suggests that these effects are not expected to persist long-term.

Q: Can Nemasole AD cause changes in body weight?

Loss of appetite and weight loss have been reported as potential adverse reactions in post-marketing surveys, according to official regulatory data.

However, the precise frequency of these side effects is not precisely known.

Q: Does Nemasole AD have a known potential to affect sleep?

Official product information does not list insomnia or sleeplessness as a common side effect.

However, patients should be aware that adverse reactions such as dizziness or drowsiness have been reported.

Q: Why do official documents mention Nemasole AD affecting the ability to drive or operate machinery?

Regulatory documents include this caution because certain adverse reactions, such as dizziness or drowsiness, have been reported by some patients.

These effects may potentially impair a patient's ability to drive or operate complex machinery safely.

Q: Does Nemasole AD interact with alcohol?

Regulatory documents indicate that patients should discuss the use of alcohol with a healthcare professional during treatment.

Specific interactions between Nemasole AD and alcohol have not been formally classified in the official prescribing information.

Q: Are there any common over-the-counter medicines or supplements that interact with Nemasole AD?

Regulatory patient counseling indicates that a healthcare professional should be consulted before taking any other medication while using Nemasole AD.

This includes nonprescription (over-the-counter) medicines, as well as herbal and vitamin supplements.

Q: Does Nemasole AD interact with common painkillers like ibuprofen or acetaminophen?

Regulatory patient counseling indicates that a healthcare professional should be consulted before taking any nonprescription (OTC) medicines, including common painkillers.

Specific interaction data for these substances may not be detailed in the official label.

Q: What is the official guidance regarding missing a dose of Nemasole AD?

Official patient guidance describes the procedure as: if a dose is forgotten, it is taken as soon as it is remembered.

However, if it is close to the time for the next scheduled dose, the missed dose is skipped entirely.

Q: What information is available about the use of Nemasole AD in older adults?

Official prescribing information addresses use in older adults but does not mandate any specific warnings or required dose adjustments for this population under standard treatment conditions.

Q: Are there specific restrictions or warnings for people with kidney impairment when using Nemasole AD?

Official regulatory warnings specifically highlight the need for caution in individuals with impaired hepatic (liver) function.

However, the official prescribing information does not list a corresponding restriction specifically for people with pre-existing kidney impairment.

Q: What is known about taking Nemasole AD during pregnancy?

According to regulatory documents, Nemasole AD was previously designated Pregnancy Category C.

The medication is only used when the prescriber has determined that the potential benefit outweighs the potential risk to the fetus.

Q: How is Nemasole AD categorized in terms of drug safety classification (e.g., pregnancy risk category)?

Under the previous system used by the FDA, Nemasole AD was categorized as Pregnancy Category C.

It is noted that the current FDA labeling rules no longer use this specific letter classification system.

Q: What are the official recommendations about breastfeeding while using Nemasole AD?

Official product information indicates that a small amount of the active ingredient, Mebendazole, may be found in human milk.

Due to this finding and limited clinical data, caution is advised when the medication is administered to a nursing woman.

Q: Is Nemasole AD ever described as having a risk of dependence or addiction?

Official prescribing information, specifically the section related to drug abuse and dependence, does not contain any reference to dependence, abuse, or addiction potential for Nemasole AD.

Q: Are there specific lab tests required before starting Nemasole AD treatment?

While no specific lab tests are required before starting the medicine for a standard course, official warnings advise that periodic assessment of hepatic (liver) and hematopoietic (blood) function may be recommended during prolonged therapy or when using higher doses.

Q: What is the purpose of the 'Black Box Warning' (if applicable) for Nemasole AD?

According to the FDA label, Nemasole AD does not currently carry a Black Box Warning.

However, the official prescribing information does contain prominent warnings about the potential for rare, serious adverse reactions like agranulocytosis and Stevens-Johnson syndrome (SJS/TEN).

Q: What is the typical half-life of Nemasole AD?

Regulatory documents on pharmacokinetics indicate that the reported elimination half-life of the active ingredient is typically between 2.5 and 5.5 hours.

This measurement applies to people with normal hepatic (liver) function.

Q: Where can I find summaries of the clinical trials for Nemasole AD?

Summaries of the clinical trials and the data reviewed for the drug’s regulatory approval are generally made available to the public.

These summaries can often be found through the regulatory body’s database using the official application or reference ID number.

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How should Nemasole AD be stored and disposed of?

Nemasole AD (mebendazole) must be stored according to specific regulatory requirements to maintain its stability.

Storage Conditions

The product is required to be kept at Controlled Room Temperature, defined as 20 C to 25 C (68 F to 77 F). It is essential to keep the medicine from freezing and to protect it from excess heat, moisture, and direct light. Nemasole AD must be stored in a tightly closed container.

Stability and Child Safety

For specific bottle presentations, unused tablets must be discarded one month after the bottle is first opened. All medication must be stored out of the reach of children, as mandated by official labeling.

Disposal Instructions

To dispose of unused or expired Nemasole AD, users must ask a healthcare professional how to dispose of any medicine you do not use, which is the official regulatory instruction.

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

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