Combantrin Compuesto

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Combantrin Compuesto

Method of action: Anthelmintic

Treatment option:

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.

Overview of Combantrin Compuesto

Quick Facts: Combantrin Compuesto Identity

Property Description
Active ingredients Pyrantel Pamoate, Oxantel Pamoate
Form Oral suspension and Tablets
Pharmacological class Anthelmintic Agent (Antinematodal)
Common purpose Treating intestinal worm infections
Origin Synthetic

What Type of Medicine is Combantrin Compuesto?

Combantrin Compuesto is formally classified as a fixed-dose combination product within the Anthelmintic Agent class, specifically designed to eliminate parasitic worms from the body. This medication is a synthetic pharmaceutical preparation, primarily available as an oral suspension or in tablet form, and is intended for oral administration to address intestinal worm infections. It is clinically recognized for its role in managing co-existing nematodal infestations, a common scenario in many geographical regions.

As an Anthelmintic Agent, its therapeutic category is strictly antiparasitic, focusing on nematodal pathogens, which are roundworms. The combination designation signifies a deliberate strategy to broaden the overall range of effectiveness against various types of helminths that may inhabit the gastrointestinal tract. The Pyrantel/Oxantel combination is utilized as a strategy against major intestinal nematodes, and the inclusion of both active agents is noted as a method for increasing overall treatment success.

Composition and Action

The medicine's composition is defined by its two principal active ingredients: Pyrantel Pamoate and Oxantel Pamoate. Both agents are chemically related synthetic derivatives that belong to the Tetrahydropyrimidine derivatives subclass.

The use of the Pamoate salt forms is a key design characteristic that ensures the medicine is minimally absorbed into the bloodstream. This property keeps the majority of the active components concentrated in the intestine, the site of the parasitic infestation. This localized action is crucial for their general purpose: Pyrantel provides high efficacy against parasites in the upper gut (e.g., roundworms), while Oxantel adds coverage for pathogens such as whipworms (Trichuris trichiura) typically residing in the lower bowel, leading to the expulsion of the paralyzed organisms. This dual-component approach is often favored when treating pediatric patient groups where infection with both roundworms and whipworms is common.

What side effects are possible with Combantrin Compuesto?

Possible side effects and safety information

The safety profile for Combantrin Compuesto (Pyrantel Pamoate and Oxantel Pamoate) is documented in official regulatory sources, with reported adverse reactions typically classified by the system-organ class affected.

Documented Adverse Reactions and Safety Profile

Adverse reactions listed in regulatory documents are generally grouped into two primary systems.

  • Gastrointestinal Disorders: Commonly reported effects include Nausea, Vomiting, Diarrhea, and Abdominal cramps. Anorexia (loss of appetite) and Tenesmus (straining to pass stools) are also documented.
  • Nervous System Disorders: Officially listed effects include Headache, Dizziness, Drowsiness, Insomnia, and Irritability. The frequency classification for these effects is often cited as Not Known in regulatory summaries.

Other adverse reactions that have been officially reported include transient elevations of liver enzymes (Hepatobiliary Disorders) and Rash (Skin and Subcutaneous Tissue Disorders).

Serious Safety Considerations and Restrictions

Official prescribing information includes specific limitations on use:

  • Contraindications: The medicine is strictly contraindicated in cases of known Hypersensitivity to the active agents or excipients, Intestinal Obstruction, and Severe Hepatic Disease (liver impairment).
  • Serious Events: The potential for Hypersensitivity (severe allergic reaction) is documented as a clinically important safety concern.
  • Population Notes: Safety and effectiveness have not been established for children under 2 years of age. Use during pregnancy and lactation is only advised when the regulatory benefit assessment supports the use. Concurrent administration with Piperazine is officially contraindicated due to potential pharmacological antagonism.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information emphasizes that taking too much of this medicine requires immediate attention, even if symptoms are not yet present.

Potential Manifestations of Overdose

Taking an overdose of this medication may lead to acute gastrointestinal symptoms. Documented manifestations reported in official labeling include:

  • Stomach pain or abdominal discomfort
  • Diarrhea
  • Nausea
  • Vomiting

Required Emergency Action

The most important instruction is to seek professional medical advice immediately if a suspected overdose has occurred, regardless of how the person feels. The urgency of this action is explicitly stated in official governmental guidance for managing exposure.

Overdose Component Official Regulatory Statement
Symptom Onset Symptoms may be delayed or absent initially, but immediate action is still required.
Emergency Contact Telephone the local Poisons Information Centre or an equivalent healthcare professional immediately for advice.
Condition for Seeking Help This action must be taken if you or anyone else is suspected of having swallowed much of the medicine, even if there are no signs of discomfort or poisoning.

Treatment for overdose is generally supportive. The immediate focus is on contacting emergency resources to assess the level of exposure and determine the necessary clinical interventions.

Therapeutic Uses of Combantrin Compuesto

What Combantrin Compuesto Treats: Main Uses and Benefits

The primary role of Combantrin Compuesto is applied in addressing targeted anthelmintic therapy for managing common intestinal nematode infections, contributing to easing the overall symptom load for the patient; this combination is commonly used to help with addressing soil-transmitted nematode infections.

This medication is commonly used to help with managing parasitic infestations caused by the major soil-transmitted helminths (STH). This includes roundworm (Ascaris lumbricoides), pinworm (Enterobius vermicularis), hookworm, and whipworm (Trichuris trichiura). The treatment helps address symptom clusters that are a direct result of parasitic activity, such as abdominal cramping and discomfort, as well as the intense perianal irritation commonly associated with pinworm. This medication is considered relevant in situations requiring short-term symptomatic assistance for school-aged children and other individuals in endemic areas.

“The treatment's primary benefit is managing the parasitic cause of symptoms that interfere with daily functioning and contributes to household stability.”


Quick Fact: Relief for Parasitic Symptoms
Primary Domain Anthelmintic Therapy for intestinal nematodes
Symptom Clusters Gastrointestinal discomfort, perianal irritation, and functional strain
Common Use Co-existing infestations (mixed infections)
Patient Benefit Supports general well-being and stability

Eligibility and Restrictions for Use

Official Eligibility Profile

Regulatory documents define specific populations permitted for use, those requiring conditional use, and those who must not use Combantrin Compuesto (Pyrantel Pamoate/Oxantel Pamoate combination).

Age-Related Eligibility

Population Status
Adults (12+ years) Permitted
Children (2 to <12 years, ≥25 lbs) Permitted
Children (<2 years or <25 lbs) Restricted Use

Contraindications and Conditional Use

Use of the medication is contraindicated for individuals with known hypersensitivity to any component of the drug or those with an existing intestinal obstruction.

Conditional use, requiring explicit physician direction, applies to several groups. Patients with pre-existing liver disease or impaired hepatic function are restricted from standard use. The label also requires medical consultation for pregnant and nursing women. Furthermore, use in children under 2 years of age or weighing less than 25 pounds is conditional and not recommended without a physician's directive. Safety and efficacy are generally not established for infants or older adult populations in available regulatory data.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory documents for Combantrin Compuesto, a fixed-dose combination containing Pyrantel Pamoate and Oxantel Pamoate, establish specific administration constraints and documented interaction patterns with other substances.

Category Official Regulatory Information
Medicinal products with documented interactions Piperazine; Theophylline; Alcohol
Timing-based interaction rules Co-administration with Piperazine is formally restricted and must not be administered simultaneously.
Interaction-related restrictions The combination with Piperazine is restricted due to a documented pharmacodynamic antagonism against Pyrantel Pamoate.

The most significant interaction involves Piperazine, an anthelmintic agent. Regulatory labeling classifies this as a prohibited co-administration due to pharmacodynamic antagonism, which is officially documented to counteract the medicine’s intended effect.

Another documented interaction involves Theophylline, where co-administration with Pyrantel Pamoate is officially stated to result in an increase in the plasma concentration of Theophylline. This represents a documented change in systemic exposure for the co-administered drug.

Regarding other substances, official patient information documents an additive pharmacodynamic effect with alcohol that may enhance CNS effects, such as dizziness. Conversely, there is no known restriction concerning food or drinks; the medicine can be taken with or without meals, milk, or fruit juice. These statements define the product's official interaction constraints as determined by regulatory authorities.

Mechanism of Action

How Combantrin Compuesto Works: Dual Mechanism


Targeted Neuromuscular Paralysis (Pyrantel Pamoate)

The Pyrantel Pamoate component acts on the parasitic worm's somatic musculature as a depolarizing neuromuscular blocking agent. By activating specific nicotinic acetylcholine receptors (nAChRs), it causes persistent muscle stimulation leading to spastic paralysis. This action causes the worms to detach from the intestinal wall, facilitating their displacement and subsequent passage through the gastrointestinal tract.


Inhibition of Metabolism and Cellular Structure (Mebendazole)

This complementary mechanism focuses on the parasite's internal cellular machinery. Mebendazole binds to beta-tubulin, disrupting the formation of microtubules vital for internal transport and structure. This interference blocks the absorption and uptake of glucose, leading to the depletion of the worm's energy stores and resulting in the parasite's demise due to energy substrate depletion.


Mechanism Alignment for Localized Action

Both components are characterized by poor systemic absorption, concentrating the drugs in the gastrointestinal tract at the primary site of action. A pharmacokinetic profile characterized by poor systemic uptake limits distribution beyond the intestinal lumen. The combination utilizes two distinct mechanistic pathways against susceptible organisms to disrupt the biological functions necessary for the parasite's survival and attachment.

Dosage and Administration Information

How to Use Combantrin Compuesto: Administration Guidelines

Combantrin Compuesto (often containing Pyrantel Pamoate or Mebendazole) is an orally administered medication. Instructions for its use are based on a precise procedural regimen.

Dosing and Administration

  • Route: This medicine must be taken orally.
  • Timing: It may be taken with or without food or liquids such as milk or fruit juice, as specified for the formulation.
  • Dosage Calculation: The standard single dose for Pyrantel Pamoate is calculated based on 11 mg per kg of body weight, with a specified maximum dose (e.g., 1 gram). Mebendazole regimens typically involve a fixed 100 mg dose taken twice daily for three consecutive days.

Preparation and Procedural Rules

Administration Rule Requirement
Oral Suspension Shake the bottle well before measuring. Use a calibrated measuring device, not a household spoon.
Tablets May be chewed completely, swallowed whole, or crushed and mixed with a small amount of food.
Age Restriction Use is generally restricted to children 2 years of age and older, unless directed otherwise by the dosing chart.
Dose Repetition For pinworm infections, the single initial dose is repeated after two to four weeks to eliminate newly hatched worms and ensure complete treatment.
Household Treatment Simultaneous treatment of all immediate household members is utilized as part of the protocol to prevent reinfection.

These instructions define the standard sequence for administering the medication, including dose calculation and necessary public health measures.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Combantrin Compuesto

This section provides an overview of the research that has been conducted on the Pyrantel Pamoate/Oxantel Pamoate combination. This information describes the available studies and what remains to be learned, but it does not offer clinical advice or personal recommendations.


Research Evidence for Intestinal Nematode Infections (Roundworms, Whipworms, Hookworms)

The research base for this combination primarily examined studies related to soil-transmitted helminth (STH) infections. The evidence base includes multiple Randomized Controlled Trials (RCTs) and controlled studies, which have been analyzed in high-level research such as Systematic Reviews. These studies often compared the combination against single-drug treatments or a placebo to understand the findings describe patterns observed in the studies.

In these trials, researchers focused on parasitological efficacy endpoints. The two main measurements studies examined were the Cure Rate (CR), which describes the percentage of participants who became egg-negative, and the Egg Reduction Rate (ERR), which describes the change in the number of eggs observed. These measures are used in research examining patterns related to the presence of parasites.

Research Focus on Specific Parasite Species

The combination was specifically developed and was evaluated in studies intended to address co-existing infections. Research explored whether Oxantel Pamoate was associated with patterns related to whipworm (Trichuris trichiura) infections, and these findings were observed alongside studies of Pyrantel Pamoate. Studies have described patterns related to the combination when used in research examining both roundworm and whipworm infections simultaneously.

Evidence from Studies in Key Populations

Most of the available research was evaluated in studies focused on school-aged children and individuals in endemic areas where these infections are highly common. The studies explored how outcomes related to systemic or functional imbalance were measured in these specific populations.

Data for certain groups, such as non-pediatric patients or individuals with other existing long-term health conditions marked by functional limitations, evidence is limited. For populations other than those directly studied in the main trials, subgroup findings are uncertain.

Research Gaps and Areas of Uncertainty

The scientific support for this combination was evaluated in high-level Systematic Reviews that analyze multiple individual trials. This type of research structure describes the overall weight of evidence in this therapeutic area. However, some limitations remain:

  • Evidence quality varies across studies, with some older trials showing methodological heterogeneity (differences in how the studies were conducted).
  • Follow-up durations were limited for sustained efficacy assessment, meaning long-term effects are not fully established.
  • Data for certain groups remain insufficient, especially for adult patient subgroups and those with existing comorbidities. Study findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Combantrin Compuesto (FAQ)


Q: Does Combantrin Compuesto treat only one type of worm or several kinds?

This medication is classified in official documents as an anthelmintic agent and is intended to eliminate parasitic worms. The combination is designed to target several types of intestinal nematodes, which include pinworms, roundworms, hookworms, and whipworms.


Q: What is the main difference between Combantrin Compuesto and other single-ingredient worm medicines?

Combantrin Compuesto is a fixed-dose combination product, meaning it uses two different active ingredients. This strategy is intended to broaden the therapeutic coverage within the gastrointestinal tract, addressing parasites in both the upper gut and infections, such as whipworm, typically found in the lower bowel.


Q: How long do minor side effects from Combantrin Compuesto typically last?

Officially reported adverse reactions, such as nausea or mild stomach upset, are generally described as transient in official reports. Since the medication is poorly absorbed and acts mainly in the gut, these effects tend to be limited. The complete clearance of the worms may take a few days after administration.


Q: What information is available about using Combantrin Compuesto during pregnancy?

Regulatory documents state that use during pregnancy is conditional and is only advised when the regulatory benefit assessment supports its use. Pregnant women are recommended to consult a healthcare professional before using this medication.


Q: What are the considerations for a woman who is breastfeeding and taking this drug?

Official documents note that safety during lactation has not been formally established. However, due to the drug's minimal absorption into the bloodstream, official descriptions indicate that excretion into breast milk and subsequent systemic absorption by an infant are not expected.


Q: What does the term 'neuro-muscular blocking agent' mean in simple terms regarding how the medicine works?

One of the active components is described as a depolarizing neuromuscular blocking agent. In simple terms, this means it causes continuous, persistent muscle stimulation in the parasitic worm. This action leads to paralysis, which causes the worm to lose its grip on the intestinal wall, facilitating its displacement and subsequent passage.


Q: Are there any specific foods or beverages, like grapefruit juice, that can affect the way the drug works?

Official product information states that the medicine can be taken with or without meals, milk, or fruit juice. There is no restriction listed regarding food or drinks that suggests an impact on its action.


Q: Are there any official reports or studies on the use of this drug in older adults?

Official eligibility data indicates that safety and effectiveness are generally not established for older adult populations. The research base for this combination has primarily focused on studies involving school-aged children and individuals in endemic areas.


Q: How long does Combantrin Compuesto stay in the body after treatment?

The drug is designed to be poorly absorbed from the gut into the bloodstream. This property keeps the majority of the active components concentrated in the intestines, where they act on the parasites. The components are primarily excreted through feces after their intended action.


Q: Are there any specific medical conditions that might prevent someone from using this medicine?

Official labeling states that use is contraindicated (restricted) for individuals with a known hypersensitivity to any of its components, those with an existing intestinal obstruction, or those with severe hepatic disease (liver impairment).


Q: How does the drug work to clear the worms from the body?

The drug's action leads to the paralysis and displacement of the worms. This process prepares the worms for expulsion from the body via the normal intestinal process, as they can no longer maintain their hold on the intestinal wall.

How should Combantrin Compuesto be stored and disposed of?

How to Store and Dispose of Combantrin Compuesto

Official regulatory documentation outlines specific storage and handling requirements necessary to maintain the quality and safety of Combantrin Compuesto.

Storage Conditions

The product must be stored at room temperature, generally between 15 C and 30 C (59 F and 86 F). Storage must provide protection from excessive heat, moisture, and direct light. For the oral suspension form, it is mandatory that the medicine must not be allowed to freeze.

The container must be kept tightly closed and stored in its original package to maintain integrity. Critically, the medication must be stored out of the reach of children.

Disposal Instructions

Unused or expired medication must be disposed of safely according to local and national regulations for pharmaceutical waste. Disposal should prevent the product from being released into the environment, such as avoiding flushing it down the toilet or pouring it into a drain. Returning unused portions to a pharmacy for proper disposal is recommended.

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

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