Cazitel

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Cazitel

Method of action: Anthelmintic

Treatment option:

Medically reviewed

Marina Burgos

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 Cazitel

Property Description
Active ingredient Praziquantel, Pyrantel Embonate (and Febantel in 'Plus' variants)
Form Oral Flavoured or Film-Coated Tablet
Pharmacological class Anthelmintic (veterinary)
Common use Control of mixed gastrointestinal worms (tapeworms, roundworms, hookworms)
Origin Combination of synthetic chemical derivatives

Cazitel is a broad-spectrum veterinary medicinal product designed to eliminate internal parasites in dogs (and sometimes cats), serving as a definitive allwormer. It is formally classified as an anthelmintic, a group of medicines specifically developed to expel parasitic worms (helminths) from the host's body.

What Type of Medication is Cazitel? (Identity and Classification)

Cazitel is an oral combination product that delivers its therapeutic effect via multiple synthetic active ingredients presented as a single, typically flavoured tablet. This enhanced palatability is a feature designed to aid administration without the need for prior starvation. The product is clinically recognized for its ability to target both nematodes and cestodes, making it effective against the full range of common intestinal worm infestations.

The rationale for this formulation is the structural compliance with established principles of efficacy, ensuring a comprehensive spectrum of activity against common mixed parasitic infections of the gastrointestinal tract.

Praziquantel and Pyrantel: The Core Composition and Purpose

The foundational active ingredients in the core Cazitel formulation are Praziquantel and Pyrantel (usually as Pyrantel Embonate). Praziquantel is a pyrazinoisoquinoline derivative, and Pyrantel is a tetrahydropyrimidine derivative, highlighting their distinct chemical origins.

The general therapeutic purpose of this combination is the rapid and efficient control of mixed infections caused by gastrointestinal worms. This specific drug combination is effective in reducing the overall parasitic burden, including species of roundworms, hookworms, and all major tapeworms found in canines. The primary benefit is providing comprehensive internal parasite management in a convenient, single-formulation product.

Regulatory References

  1. NIH: Anthelmintic Definition

What side effects are possible with Cazitel ?

Possible Side Effects and Safety Information

The officially documented adverse effects for the combination of Praziquantel, Pyrantel, and Febantel are classified as Very Rare, meaning they are observed in less than 1 animal out of every 10,000 animals treated, based on regulatory standards. The listed effects primarily involve the digestive tract and behavioral systems.


Officially Documented Adverse Reactions

The reported adverse reactions, categorized by the affected physiological system in regulatory documentation, are classified as Very Rare:

System-Organ Class Specific Adverse Reactions
Gastrointestinal Disorders Vomiting (Emesis), Diarrhoea
General Disorders Lethargy
Nervous System Disorders Hyperactivity
Metabolism and Nutrition Disorders Anorexia

No adverse reactions are classified as Common or Uncommon in the official product information; all are grouped under the Very Rare designation. Furthermore, no distinct category for Serious Adverse Reactions is documented in the product's safety label.


Safety Constraints and Considerations

Safety notes and restrictions are explicitly provided in the regulatory documentation to define the appropriate context of use:

  • Pregnancy: Use is not recommended in bitches during the first 4 weeks of pregnancy. For pregnant animals being treated, the stated dose must not be exceeded.
  • Hypersensitivity: The product is formally contraindicated in dogs with a known hypersensitivity to any of the active substances (Praziquantel, Pyrantel, Febantel) or excipients.
  • Drug Restrictions: The product should not be used concurrently with any medication containing piperazine compounds due to the potential for antagonism. Caution is advised when administering alongside other cholinergic compounds due to the potential for toxic effects.

Overdose and Emergency Response

Overdose and when to seek help

The regulatory documentation for this combination product (Praziquantel, Pyrantel, and Febantel) defines its overdose profile based on low acute toxicity and the nature of reported clinical manifestations. Official safety studies indicate the product is generally well tolerated. Even when single doses of five times the recommended label dosage or greater were administered, the resulting clinical signs were predominantly classified as slight and transient.

Documented Overdose Presentations

The documented manifestations of overdose are consistently centered on the digestive tract. Clinical signs reported may include occasional vomiting, diarrhoea, or the passing of non-formed stools. In individual cases, these digestive tract disturbances may be accompanied by non-specific signs such as lethargy, anorexia, or hyperactivity.

Required Emergency Action

Regulatory guidance requires immediate action if an overdose is suspected. If an overdose is observed in the animal, the official instruction is to call your veterinary office immediately to report the event and receive professional direction. For human exposure, such as accidental ingestion, the official instruction is to seek medical advice immediately.

There is no specific antidote listed in the product’s official labeling; therefore, management focuses on providing symptomatic and supportive treatment. A regulatory precaution notes that the risk of possible teratogenic effects necessitates that the dose not be exceeded when treating pregnant bitches.

Therapeutic Uses of Cazitel

Quick Facts: Cazitel Therapeutic Domains

  • Tapeworms (Cestodes): Helps manage various Taenia species and Dipylidium caninum.
  • Roundworms (Nematodes): May be used to address adult and immature forms of Toxocara canis and Toxascaris leonina.
  • Hookworms: An option for addressing Ancylostoma caninum and Uncinaria stenocephala.
  • Whipworms: Indicated for the management of Trichuris vulpis.

Cazitel is a veterinary product intended for the management of common mixed infections caused by parasitic worms in dogs. The combination of active compounds is formulated to address both roundworms (nematodes) and tapeworms (cestodes) residing in the gastrointestinal tract. This medication may be a suitable component of a veterinarian-recommended health regimen to address existing parasitic presence.

Its therapeutic use is indicated for the control of several types of nematodes, including adult forms of hookworms and whipworms, as well as adult and late immature forms of ascarids (roundworms). The drug also serves to manage common tapeworm species, including Dipylidium caninum and various Echinococcus species, which pose a risk to both animal and human health. Always consult a licensed veterinarian for the diagnosis and determination of an appropriate treatment schedule.

Eligibility and Restrictions for Use

Official Eligibility and Restrictions for Cazitel

Regulatory documents define specific populations that are permitted, restricted, or prohibited from using this medicine. Eligibility is strictly confined to the target species, dogs, and is governed by rules detailed in official labeling from bodies like the Veterinary Medicines Directorate.

Contraindications and Prohibitions

Cazitel is contraindicated in animals with a known hypersensitivity to any of its active substances (Praziquantel, Pyrantel, Febantel) or excipients. Furthermore, the product must not be used concurrently with piperazine compounds, as this combination is documented to antagonize the medicine's effects.

Age and Reproductive Limitations

Use in pups less than 6 weeks of age is limited by the official regulatory statement that tapeworm infestation is unlikely in this group. For pregnant dogs, the medicine is not recommended during the first four weeks of pregnancy. Treatment in the later stages requires a formal benefit-risk assessment by a veterinarian, and the maximum stated dose must not be exceeded for this population.

Note: The regulatory label does not document explicit restrictions related to hepatic or renal impairment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents detail specific drug-drug interactions that must be considered with Cazitel, a combination product containing Praziquantel, Pyrantel Embonate, and Febantel. These documented interactions fall into categories of pharmacokinetic modification, pharmacodynamic antagonism, and toxicity risk.

Contraindicated Combinations and Toxicity Risk

The co-administration of Cazitel with Piperazine compounds is formally listed as a contraindication. This restriction is due to pharmacodynamic antagonism where the anthelmintic effects of Pyrantel and Piperazine may neutralize each other, reducing overall efficacy. Furthermore, concurrent use with other cholinergic compounds is officially noted to carry an increased risk of toxicity.

Interacting Substance/Class Official Interaction Outcome Regulatory Constraint
Piperazine compounds Antagonism of anthelmintic effect Contraindicated (Do not use simultaneously)
Cholinergic compounds Potential for increased toxicity Use is restricted

Pharmacokinetic Exposure Modification

The regulatory profile documents a pharmacokinetic interaction with substances that are Cytochrome P-450 (CYP) enzyme inducers. Co-administration with these inducers, which may include substances like Dexamethasone and Phenobarbital, is stated to cause a decrease in the plasma concentrations of Praziquantel due to altered metabolism. Conversely, the official labeling specifies that no starvation is required for treatment, and the tablets can be administered with or without food, indicating no restrictive food-drug interaction.

Mechanism of Action

How Cazitel Works: Mechanism of Action

Cazitel utilizes a combination of active ingredients, each employing a distinct and complementary pharmacodynamic mechanism and initiates a sequence of effects in the parasites. Its action is concentrated in three main mechanistic domains: rapid neuromuscular paralysis, structural damage, and energy metabolism blockade.


Direct Paralysis of Cestodes and Nematodes

This domain covers the immediate physical immobilization of parasites. Pyrantel acts as a cholinergic agonist, causing non-stop stimulation of nAChR at the nematode's neuromuscular junction, forcing the muscle into irreversible spastic paralysis. Simultaneously, Praziquantel targets cestodes (tapeworms) by creating pores that allow massive Ca^2+ ion influx, resulting in immediate tetanic muscular contraction. Both mechanisms disrupt the necessary muscular tone and attachment function.


Structural Damage and Energy Collapse

Praziquantel's mechanism also involves the disruption of the parasite’s external covering, as the uncontrolled Ca^2+ influx causes severe physical damage and vacuolization of the protective tegument. Furthermore, the pro-drug Febantel is metabolized into compounds that bind to the parasite’s structural protein, beta-Tubulin. This inhibits microtubule formation, leading to energy reserve depletion in susceptible nematodes by blocking their glucose uptake and nutrient transport, resulting in a delayed exhaustion of cellular energy reserves.

Dosage and Administration Information

How to Use Cazitel

Cazitel Plus is formulated as an oral tablet for the treatment of internal parasites in dogs, and its use is strictly guided by the animal's body weight to ensure proper dosing. The product is administered as a single oral dose that is not dependent on feeding times, meaning no starvation or fasting is necessary before or after the tablet is given.


Official Dosing and Administration Parameters

The dosage is calculated according to the body mass of the animal to deliver the exact required amount of active substances: praziquantel, pyrantel, and febantel.

Active Ingredient Dose Rate
Febantel 15 mg/kg bodyweight
Pyrantel (as Embonate) 5 mg/kg bodyweight
Praziquantel 5 mg/kg bodyweight

The standard Cazitel Plus tablet is dosed at the equivalent of one tablet per 10 kg of bodyweight, while the XL formulation is dosed at one tablet per 35 kg. To ensure accurate administration, the tablets are scored, allowing them to be split into two or four equal parts for weight adjustments.


Administration Context and Special Conditions

Administration may be achieved by giving the tablet directly or by disguising it in food. While the primary regimen is a single course for treatment, the necessity and frequency of any repeat applications must be determined through veterinary guidance.

Specific constraints exist for use in breeding animals. Specifically, administration is not recommended during the first four weeks of pregnancy in dogs, and the labeled dose must not be exceeded when treating pregnant bitches.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Cazitel

The following overview describes the type of clinical research that has explored the use of the combination product Cazitel, focusing on the design of the studies and what the findings, according to official sources, suggest about the patterns observed in the research. This is an overview of the evidence base, not advice on use.


Evidence for Use in Gastrointestinal Nematode Infections

Research examining the use of Cazitel against roundworms, hookworms, and whipworms (nematodes) includes controlled laboratory evaluation studies and clinical field trials. These studies were conducted to understand the product's effect under both experimental conditions and real-world veterinary settings. Studies observed patterns where the measured parasite load showed lower measurements in the short-term follow-up (typically 7 to 14 days). This research explored short-term symptom changes related to the parasitic burden.

Evidence for Use in Gastrointestinal Cestode Infections

The evidence base for the use of Cazitel against tapeworms (cestodes) was evaluated primarily through controlled laboratory studies. In these trials, the key outcome monitored was the assessment of parasite count confirmed through post-treatment assessments. Studies reported patterns where the measured worm burden showed lower measurements during the immediate post-treatment assessment period. Research was studied for use against the cestode species commonly found in dogs, and evidence examined this scope.


Study Landscape: Research Durability and Follow-up Periods

The majority of pivotal studies used to establish the initial evidence for Cazitel were designed as short-term trials, typically observing responses over one to two weeks. While these findings help contextualize the patterns observed in the combination during the short term, long-term effects are not fully established. There is limited information for the duration of the effect or the time until re-infection may occur.

What Is Still Uncertain in the Research Record

Comparative evidence is lacking for many direct, head-to-head comparisons against every currently available treatment option. Furthermore, the possibility of certain parasite strains developing resistance to the active ingredients was observed in some studies. The evidence highlights what is known—and what is still uncertain—about the patterns observed in the research.

Key Studies & References

  1. SUMMARY OF PRODUCT CHARACTERISTICS 1. NAME OF THE VETERINARY MEDICINAL PRODUCT Cazitel Plus Tablets For Dogs

Frequently Asked Questions (FAQ)

Common questions about Cazitel (FAQ)


Q: Is it common to feel slightly nauseous after taking Cazitel?

Official safety documentation for Cazitel lists gastrointestinal disorders, specifically vomiting (emesis) and diarrhoea, as very rare adverse reactions. This means they are observed in less than 1 out of every 10,000 animals treated. Nausea itself is not specifically documented in the list of adverse reactions from regulatory sources.


Q: Does Cazitel cause tiredness or changes in energy levels?

The official product information lists Lethargy as a very rare adverse reaction (observed in less than 1 animal in every 10,000 treated). Lethargy is often described as a state of deep drowsiness or reduced energy. Hyperactivity is also listed as a very rare nervous system disorder.


Q: Are there any known long-term side effects associated with Cazitel use?

The research studies used to establish the initial evidence for Cazitel were primarily designed as short-term trials, typically observing responses over one to two weeks. Because of this, information on effects or patterns observed over extended periods are described in the research record as not fully established.


Q: What should I do if I think I'm experiencing a mild side effect?

The official safety documentation describes that any adverse event is typically reported to the national competent authority (such as the VMD) or the company that holds the product's authorization. These reports are generally submitted through a veterinarian.


Q: Is it possible for Cazitel to interact with common over-the-counter pain relievers?

Regulatory documents explicitly contraindicate co-administration with Piperazine compounds and advise caution when using other cholinergic compounds. Specific common pain relievers are not named in the official documents.


Q: What are the general research themes explored in studies of Cazitel?

The evidence base for Cazitel examines the product's effect against gastrointestinal nematode infections (which include roundworms, hookworms, and whipworms) and cestode infections (tapeworms). These studies explore observed patterns of effectiveness under both controlled laboratory and real-world conditions.


Q: Has Cazitel been studied in diverse patient populations?

Regulatory documents indicate that the product was studied in both controlled laboratory evaluations and clinical field trials. These studies covered both controlled laboratory evaluations and clinical field trials, which are different settings used to observe patterns of effect in the veterinary context.


Q: Is it normal to not feel any different right after taking the medicine?

A lack of immediate change is consistent with the product's safety profile. According to the official product information, all documented adverse reactions are classified as Very Rare, meaning most animals are not expected to show any immediate side effects or adverse changes.


Q: What kind of monitoring, if any, is usually involved with long-term use of Cazitel?

Cazitel is primarily intended as a single course for treatment. In situations where a risk for re-infestation exists, the official guidance describes that the necessity and frequency of any repeat administration are determined by a veterinarian.


Q: What is the general difference between Cazitel and [similar drug]? (High-level only)

Cazitel is officially described as a combination product that delivers three active ingredients: Praziquantel, Pyrantel, and Febantel, to target a wide spectrum of parasites. While many options exists, the research record notes that comparative evidence against every available treatment is lacking for direct comparison.


Q: Are there any specific supplements or vitamins that should be avoided while using Cazitel?

The official product documentation specifies that co-administration with Piperazine compounds is restricted and advises caution with cholinergic compounds due to potential antagonism or toxicity risk. Supplements and vitamins are not specifically named.


Q: What is the typical timeframe for seeing the full intended result from Cazitel?

The official document describes the mechanism of action for one of the active ingredients, Febantel, as working by depleting the parasite's energy reserves. The regulatory text states that the parasite dies upon exhaustion of its energy reserves, which occurs 2–3 days later.


Q: Why does the official information recommend caution with certain health conditions?

Caution is specifically documented for use in pregnant dogs, as the product is not recommended during the first four weeks of pregnancy. Caution is also noted concerning dosage, as administering five times the recommended dose or greater may cause occasional vomiting.


Q: What happens if I miss taking Cazitel around the same time each day?

The regimen for Cazitel is specified as a single oral dose for treatment, rather than a daily course. The official instructions do not include a protocol for a missed daily dose, implying that it is not intended for continuous daily administration.


Q: Is Cazitel prescribed as a one-time treatment or an ongoing one?

The administration is defined as a single course for treatment. The need for and frequency of any repeat applications, such as for ongoing prevention, must be determined through veterinary guidance.


Q: Is there a generic equivalent to Cazitel?

The regulatory landscape contains other brand names with the exact same combination of active ingredients (Praziquantel, Pyrantel, and Febantel) presented for the same purpose.


Q: Are there different brand names used for the same active ingredient as Cazitel?

Yes. There are other products available in the market that contain the exact same combination of active ingredients: Praziquantel, Pyrantel, and Febantel.


Q: Does Cazitel come in different forms, like liquid or capsule?

Cazitel is officially presented as an oral tablet in the product information. This tablet may be flavoured or film-coated, and it is scored to aid in accurate dosing.


Q: Can I take Cazitel if I have a pre-existing stomach problem?

The safety information lists Gastrointestinal Disorders (vomiting, diarrhoea) as very rare adverse reactions, indicating the medicine has an effect on the digestive system. Any assessment of individual suitability, particularly with pre-existing conditions, is determined through professional guidance.


Q: What is the significance of the tablet's color or shape?

The official product documentation describes the tablet's physical characteristics, such as being white, off-white or yellow coloured, and being scored (allowing splitting). These characteristics are part of the description for identification and accurate administration.


Q: What is the significance of the tablet's flavor?

The tablets are officially described as being Flavoured (often meat-flavored). This feature is included to aid in administration by enhancing the tablet's palatability, making it easier to give.

How should Cazitel be stored and disposed of?

Storage and Disposal Requirements

Cazitel tablets must be stored according to regulatory specifications to ensure stability and safety. The product must be kept out of the sight and reach of children.


Storage Conditions

The required storage condition is typically below 30°C (room temperature), protected from direct sunlight and elevated temperatures. The tablets should be kept in the original container.

If a tablet is divided, the unused half tablet must be returned to the open blister space and stored in the outer carton. This unused portion has a limited shelf-life of 14 days.

Disposal Instructions

Disposal of unused or expired Cazitel must be done in accordance with local requirements for pharmaceutical waste. The product should not be disposed of via wastewater to prevent environmental contamination.

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

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