Nemocid

Quick links to important sections

Nemocid

Selected form

Method of action: Anthelmintic

Treatment option: Enterobiasis

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Nemocid

Property Description
Active ingredient Pyrantel Pamoate
Form Oral Suspension, Tablet
Pharmacological class Anthelmintic Drug / Anti-nematodal agent
Common use Intestinal Parasite Infections
Origin Synthetic Compound

Nemocid is the brand name for a medicinal product whose active component is the compound Pyrantel Pamoate, which is pharmacologically classified as an anthelmintic drug. This classification signifies its specific therapeutic role as an anti-nematodal agent, targeting parasitic worm infections in the gastrointestinal tract. The general benefit of this agent is its contribution to the reliable management of helminthiasis, an infection type that requires specialized drug action for successful eradication.


Composition and Available Forms of Pyrantel

Pyrantel is a synthetic compound, specifically identified as a Tetrahydropyrimidine derivative. In Nemocid, it is formulated as the salt Pyrantel Pamoate to ensure its activity remains primarily localized to the site of infection within the intestine. This oral medication is presented as a single-ingredient product and is commercially available in several dosage forms suited for oral administration, including a flavored oral suspension and various tablet formats. Nemocid is clinically recognized for providing flexible dosing formats suitable for administering the medicine across different patient groups.

High-Level Action: How Nemocid Affects Parasites

The fundamental mechanism that defines this drug's purpose is its function as a depolarizing neuromuscular blocking agent in the target helminths. The compound causes intense stimulation and subsequent immobility in the parasites. The general benefit derived from this targeted activity is the subsequent, effective expulsion of the paralyzed organisms. By causing paralysis, Nemocid prevents the worms from maintaining their grip on the intestinal wall, allowing the body's natural peristaltic movements to clear the immobilized organisms from the digestive system. The focus is on rapid, localized action within the gut.

Regulatory References

  1. WHO List of Essential Medicines

What side effects are possible with Nemocid?

Possible side effects and safety information

The official safety information for Pyrantel Pamoate, the active ingredient in Nemocid, identifies adverse reactions primarily within the gastrointestinal and nervous systems. These reactions are described in regulatory labeling as effects that sometimes occur and include abdominal cramps, nausea, vomiting, diarrhea, headache, and dizziness.

System-Organ Class Officially Documented Effects
Gastrointestinal Disorders Abdominal cramps, Nausea, Vomiting, Diarrhea
Nervous System Disorders Headache, Dizziness, Drowsiness
Hepatic System Minor, transient elevations in liver enzymes

Safety constraints and special population considerations are explicitly noted in regulatory documents. The medicine is classified as Pregnancy Category C. Caution is advised for its use in patients with pre-existing liver disease or impaired hepatic function, as well as those with severe malnutrition or anemia.

Official labeling generally restricts use in children under 2 years of age or under 25 pounds, unless specifically directed by a healthcare provider. High-level safety limitations include contraindications for individuals with known hypersensitivity to the drug's components and for patients presenting with gastrointestinal obstruction. Furthermore, regulatory information advises against concomitant use with piperazine due to a potential antagonistic effect.

Overdose and Emergency Response

Nemocid Overdose and when to seek help

Regulatory documentation provides specific guidance on the documented clinical manifestations and the required immediate emergency action following an overdose of Nemocid (Pyrantel Pamoate).

Element Official Regulatory Statement
Documented Manifestations Gastrointestinal disturbances, including nausea, vomiting, diarrhea, and abdominal cramps; may include headache and dizziness.
Physiological Systems Gastrointestinal and Central Nervous System.
Immediate Action Required Seek professional assistance or contact a Poison Control Center immediately.

The documented overdose profile is defined by manifestations that primarily involve the gastrointestinal system and transient Central Nervous System effects such as dizziness or headache. Overdose risk is associated with the accidental ingestion of an amount exceeding the recommended dosage.

The established regulatory protocol mandates that in the event of any suspected or accidental overdose, the individual must seek professional assistance or contact a Poison Control Center immediately. This requirement applies regardless of the severity of the symptoms presented. Official regulatory guidance specifies that treatment for overdose is limited to symptomatic and supportive care. This approach is necessary because the authoritative labeling confirms that there is no specific antidote known for Pyrantel Pamoate overdose. The focus of medical intervention is therefore on managing the documented clinical manifestations. No special population-specific monitoring requirements for demographics like pediatric or geriatric patients are explicitly detailed in the official overdose sections.

Therapeutic Uses of Nemocid

What Nemocid Treats: Main Uses and Benefits

Nemocid is an anthelmintic medication primarily used to treat various types of intestinal parasitic worm infections. It belongs to a class of medications known as pyrantel pamoate derivatives, which work by targeting the nervous system of specific parasites.

Primary Indications

The medication is most commonly used for the treatment of infections caused by several types of common intestinal parasites:

  • Pinworms (Enterobius vermicularis): These are small, white worms that inhabit the colon and rectum. They are highly contagious and represent one of the most frequent parasitic infections in both children and adults.
  • Roundworms (Ascaris lumbricoides): These parasites reside in the small intestine and can grow to several inches in length.
  • Hookworms (Ancylostoma duodenale and Necator americanus): These parasites attach to the lining of the small intestine to feed on blood.

Mechanism of Action

Nemocid functions as a neuromuscular blocking agent. When the parasites are exposed to the medication, it induces a paralyzed state. This prevents the worms from maintaining their hold on the intestinal wall or moving within the digestive tract. Consequently, the parasites are unable to remain in the body and are naturally expelled through bowel movements.

Benefits and Clinical Effects

The use of Nemocid offers several benefits in the management of parasitic infections:

  • Targeted Activity: It is effective against both the mature and immature stages of susceptible helminths within the gastrointestinal tract.
  • Symptom Relief: By clearing the infection, the medication helps alleviate the physical discomfort often associated with parasites, such as itching, abdominal pain, and digestive disturbances.
  • Prevention of Complications: Treating intestinal worms helps prevent secondary issues such as nutritional deficiencies or more significant intestinal blockages that can occur with heavy infestations.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Nemocid (Pyrantel Pamoate)

This information describes the officially documented population eligibility and non-eligibility for Nemocid (Pyrantel Pamoate), based strictly on government regulatory sources.


Eligibility Scope

  • Populations for whom use is allowed: Established for adults and children two years of age and older.
  • Populations for whom use is not recommended: Children under two years old or weighing less than 25 pounds, unless directed by a physician. Individuals with known liver disease or hepatic impairment.
  • Populations for whom use is contraindicated: Known hypersensitivity or allergy to Pyrantel Pamoate or any component of the product.

Age-Related and Condition-Specific Eligibility

  • Age-related eligibility rules: Use is established for individuals two years of age and older. Use in children under two years old is restricted and not established without a doctor's direction.
  • Condition-specific eligibility rules: Use is conditional for patients with liver disease or hepatic impairment, who must consult a physician prior to use.
  • Pregnancy and lactation eligibility status: Both are conditional use populations; the official label requires consulting a physician prior to use.

Eligibility Classifications (High-Level)

  • Eligibility severity classification: Absolute Contraindication (Hypersensitivity), Restricted/Conditional Use (Pregnancy, Liver Disease), Use Not Established (Children under two).

Resulting Eligibility Structure

Official regulatory documents define the user population based on age, physiological status, and existing health conditions. Absolute contraindications include component hypersensitivity. Conditional use restrictions apply to individuals with liver disease and those who are pregnant or breastfeeding, requiring specific medical authorization. Use is prohibited without medical direction for children under two years of age.

What should I know about interactions with other medicines?

Interaction Map: Interactions with other medicines and products — official regulatory information for Nemocid (Pyrantel Pamoate)

Interaction Scope

Category Official Regulatory Documentation Statement
Medicinal product categories with documented interactions Other anthelmintic agents (e.g., piperazine); systemic medications (e.g., Theophylline); and radioactive diagnostic agents (e.g., sodium iodide I-123/I-131).
Specific interacting medicines (if explicitly listed) Piperazine (formally restricted combination), Theophylline, Sodium Iodide I-123, Sodium Iodide I-131.
Mechanistic basis of interactions Pharmacodynamic antagonism (with Piperazine); increase in plasma concentration of co-administered drug by an unspecified mechanism (with Theophylline); additive CNS effects (with alcohol).
Timing-based interaction rules None required. The product can be taken with or without food or liquids.
Interaction-related restrictions Contraindicated co-administration with Piperazine. Avoid co-administration with other anthelmintic agents.

Interaction Classifications (High-Level)

Classification Official Regulatory Documentation Statement
Interaction severity classification Contraindicated combination (with Piperazine); Clinically significant interaction (with Theophylline); Warning/Caution (with Alcohol).
Interaction-context constraints Interactions exist with both medicinal products and substances (e.g., alcohol). No clinically significant interaction with food is documented.

Resulting Interaction Structure

Official interaction statements:

  • Co-administration with Piperazine is formally prohibited due to resulting pharmacodynamic antagonism, which diminishes the effect of both agents.
  • Nemocid may increase the plasma concentration of Theophylline by an unspecified mechanism.
  • The regulatory label documents interactions with radioactive diagnostic agents, such as Sodium Iodide I-123 and Sodium Iodide I-131.
  • Co-administration with alcohol may lead to additive CNS effects, specifically increasing the risk of dizziness.

Connection to the overall interaction profile (3 sentences):

Regulatory documents define Nemocid's official interaction structure primarily by a formal contraindication due to pharmacodynamic antagonism with Piperazine, alongside documented effects on the systemic exposure of co-administered drugs like Theophylline. The profile includes specific cautionary statements regarding additive CNS effects with substances such as alcohol. This structure focuses on mandated drug-drug restrictions and pharmacokinetic/pharmacodynamic outcomes, without requiring any separation of administration timing from food or meals.

Mechanism of Action

Mechanism: Targeting Parasite Neuromuscular Receptors

Nemocid operates by functioning as an agonist on specific nicotinic acetylcholine receptors located within the muscle tissue of susceptible organisms. The drug's binding causes a sustained electrical depolarization of the muscle cell membrane, leading to its persistent activation. This action initiates a cascade that interferes with the parasite’s ability to control its motor function.

Physiological Effect: Inducing Spastic Paralysis and Expulsion

The immediate consequence of the sustained receptor activation is the induction of spastic paralysis—a rigid, uncontrollable state of muscle contraction throughout the organism. This immobility results in the organism losing its physical grip on the host's intestinal lining. The resultant detachment facilitates the organisms' mechanical clearance and subsequent expulsion from the gastrointestinal lumen by the host’s natural propulsive movements.

Dosage and Administration Information

How Nemocid is Used: Administration Guidelines

Nemocid (Pyrantel Pamoate) is administered according to standard protocols to ensure proper usage. The focus of these instructions is on the route, calculated dosage, and required administration conditions, with no instructions related to the drug's mechanism or therapeutic effect.


Administration Protocol

The use of this medicine centers on a specific, weight-based single-dose regimen:

Feature Instruction Summary
Route of Administration Oral route only (swallowed).
Dosing Calculation Standard dose is 11 mg Pyrantel base per kg of body weight. The maximum single dose must not exceed 1 gram (1000 mg) Pyrantel base.
Dosage Forms Available as an Oral Suspension (50 mg/mL Pyrantel base) and various Tablet formats.
Frequency and Timing Typically a single dose is administered. The dose can be taken with or without meals.

Instructions for Proper Intake

Administration requirements ensure the medicine is prepared and taken correctly:

  • Preparation: The oral suspension must be shaken well before use and measured using an accurate device. The dose may be mixed with milk or fruit juice, if desired.
  • Laxatives: The use of a laxative is not necessary before, during, or after Nemocid administration.
  • Pediatric Use: The medication is not recommended for children under 2 years of age or those weighing less than 25 pounds (approximately 11 kg), unless specifically directed by a healthcare professional.
  • Repetition: Treatment is a single-course event and should not be repeated unless 2 to 3 weeks have passed and the need for re-treatment is confirmed and instructed by a doctor.

Recent Clinical Evidence

Nemocid: Recent Clinical Evidence

Scope of Research

Clinical studies have explored Nemocid (pyrantel pamoate), an antihelminthic compound, in treating infections caused by various parasitic worms, including roundworm, pinworm, and hookworm. Research investigated the compound's effect on various biological markers used in the condition. The mechanism explored in research involves binding to the muscle and nerve cells of susceptible parasites, leading to their paralysis and subsequent clearance from the body.


Clinical Trial Findings

Studies on Nemocid typically focus on its ability to clear the infection, often measured by parasite egg count reduction (cure rate) or complete eradication after treatment. A range of clinical trials, including placebo-controlled and open-label studies, have explored the compound's potential effects in adult and pediatric participants (generally aged two years and older).

Primary Outcomes Explored

  • Cure Rates: Several studies explored whether the compound is associated with a reduction in the parasite load, as determined by follow-up stool examinations. The primary trials utilized a fixed daily dose of the compound, and the duration of effect was measured across the treatment period.
  • Response Markers: Research has examined whether the compound is associated with a decrease in relevant biological markers over the study duration.

Safety and Subgroup Analysis

Some research has explored whether the compound's effect varied based on the type of infection or the severity of symptoms. Studies have explored the compound's use in various treatment scenarios. The combination was investigated in several trials that included participants selected based on specific historical responses to previous single-therapy treatments.

The most commonly reported effects in trials included mild gastrointestinal disturbances, such as nausea and abdominal cramping, and headache. Caution is required in patients with pre-existing liver disease or malnutrition, and monitoring blood and liver function is standard practice during treatment.

Key Studies & References

  1. WHO Model List of Essential Medicines - Anthelmintics and related compounds

Frequently Asked Questions (FAQ)

Common questions about Nemocid (FAQ)


Q: How quickly do people typically notice Nemocid starting to work?

A: Official information indicates that Nemocid acts by rapidly causing paralysis in the susceptible parasitic organisms. The drug's action leads to the organism's clearance from the body through natural movements. The exact time it takes for a person to notice the effects is not consistently specified in general regulatory labeling.


Q: What are the most commonly reported side effects of Nemocid?

A: Reported effects are primarily within the digestive and nervous systems. These include gastrointestinal issues such as nausea, vomiting, abdominal cramps, and diarrhea, as well as nervous system effects like headache and dizziness. This information is based on official regulatory sources.


Q: Is Nemocid the same type of medicine as others for this condition?

A: Nemocid (pyrantel pamoate) is classified as an antihelminthic agent, used against parasitic worms. It specifically belongs to a chemical group known as the tetrahydropyrimidines and is structurally different from other antihelminthic compounds.


Q: How is Nemocid different from a placebo in research trials?

A: Official information indicates that Nemocid is distinguished from a placebo by showing evidence of therapeutic effect. This outcome is typically determined by a successful reduction in the number of parasitic worm eggs observed in follow-up examinations (known as cure rates).


Q: Does Nemocid have to be taken at a specific time of day?

A: Official guidelines indicate that the medicine can be taken at any time of day. Furthermore, the single dose can be administered with or without meals, according to regulatory directions.


Q: Can Nemocid affect sleep patterns?

A: Yes, some official regulatory sources list insomnia, or trouble sleeping, as an associated side effect. This is categorized under nervous system disorders alongside other effects like dizziness or drowsiness.


Q: What happens if I forget to take Nemocid one time?

A: As Nemocid is typically prescribed and administered as a single-course treatment, the concept of a 'missed dose' as it applies to regular daily medications is not included in the official administration directions.


Q: Is Nemocid safe for older adults to take?

A: Regulatory information provides the same standard weight-based dosing guidelines for both adults and geriatric patients. No special dosage adjustments or additional warnings based solely on advanced age are noted in the regulatory guidelines for Nemocid.


Q: Are there different versions or strengths of Nemocid available?

A: Yes, regulatory documents indicate that Nemocid (pyrantel pamoate) is available in different formats to suit administration needs. These include an oral suspension and various tablet forms that may contain different strengths of the active ingredient.


Q: Is Nemocid considered a controlled substance?

A: According to official regulatory marketing information, Nemocid (pyrantel pamoate) is generally available as an Over-the-Counter (OTC) human drug product. It is not classified or scheduled as a controlled substance under federal schedules.


Q: Is it possible to become dependent on Nemocid?

A: Official regulatory labeling does not contain statements or warnings regarding the potential for physical or psychological dependence. Such warnings are standard for drugs associated with a risk of abuse or dependence.


Q: Can Nemocid be crushed or broken if I have trouble swallowing?

A: The tablet formulation is typically directed to be swallowed whole. Official administration directions generally specify not to crush, chew, or break the tablets. The label specifies that the oral suspension formulation can be mixed with milk or fruit juice for administration.


Q: Can people who are vegetarian or vegan take Nemocid?

A: The suitability depends on the specific product formulation, as it relates to the inactive ingredients (excipients). The commonly listed excipients in the tablets are typically plant-derived or synthetic, but confirmation should be made for the specific product being used.


Q: What research evidence exists for Nemocid's use in children?

A: Regulatory documents and clinical trial summaries include data regarding the use of Nemocid in children, generally for those aged two years and older. The official labeling specifies weight-based dosing and administration warnings tailored for this younger population.


Q: Is it possible to get a refill of Nemocid without seeing a doctor again?

A: As Nemocid is designed as a single-dose treatment, the official directions state that the course should not be repeated unless a period of 2 to 3 weeks has passed and the need for re-treatment is confirmed and instructed by a healthcare professional.


Q: Do I need to change my activities while using Nemocid?

A: Due to the potential for nervous system side effects like dizziness and drowsiness, warnings caution against driving or operating complex machinery until a person knows how Nemocid may affect them. This is a standard caution based on official labeling.

How should Nemocid be stored and disposed of?

How to Store and Dispose of Nemocid (Pyrantel Pamoate)

Nemocid must be stored within specific environmental and temperature constraints to maintain its stability, as mandated by regulatory labeling.


Storage Requirements

  • Temperature: Store at controlled room temperature, typically 20 C to 25 C (68 F to 77 F).
  • Protection: The medicine must be protected from light and stored away from excess heat and moisture.
  • Prohibited: It is required to not allow the suspension to freeze.
  • Container: Keep the medication in its original container and ensure it is tightly closed.

Child Safety and Disposal

Nemocid must be stored out of the sight and reach of children and pets at all times.

Expired or unused medication must be discarded safely according to local authority requirements. Regulatory guidelines prohibit discharging the product into sewer systems or the environment.

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

Available in countries:

Equivalent of Nemocid found in:

A-Z Index: