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Zentel

Zentel

Ask a doctor about a prescription for Zentel

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Doctor

Svetlana Kolomeeva

Cardiology17 years of experience

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use Zentel

Patient Information Leaflet: User Information

Warning! The leaflet should be kept. Information on the immediate packaging in a foreign language.

Zentel, 400 mg/20 ml, Oral Suspension

Albendazole

You should carefully read the contents of the leaflet before using the medicine, as it contains important information for the patient.

  • You should keep this leaflet, so that you can read it again if you need to.
  • If you have any doubts, you should consult a doctor or pharmacist.
  • This medicine has been prescribed specifically for you. Do not pass it on to others. The medicine may harm another person, even if their symptoms are the same.
  • If the patient experiences any side effects, including any side effects not listed in this leaflet, they should tell their doctor, pharmacist, or nurse. See section 4.

Table of Contents of the Leaflet

  • 1. What is Zentel and what is it used for
  • 2. Important information before using Zentel
  • 3. How to use Zentel
  • 4. Possible side effects
  • 5. How to store Zentel
  • 6. Contents of the pack and other information
  • 7. Additional information on parasitic diseases

1. What is Zentel and what is it used for

Zentel contains albendazole, an active substance with antiparasitic action.
Albendazole acts on parasites (worms) and their larvae, preventing them from absorbing sugars (glucose), which causes them to lose energy and die. It also acts on the eggs of parasites.
Zentel is a medicine used to treat diseases caused by parasites (worms), such as:

  • infection with human pinworm (enterobiasis);
  • infection with hookworm (ancylostomiasis);
  • infection with American hookworm (necatoriasis);
  • infection with roundworm (strongyloidiasis);
  • infection with human roundworm (ascariasis);
  • infection with whipworm (trichuriasis);
  • infection with tapeworm (taeniasis).

For additional information on parasitic diseases, see section 7 of the leaflet.

2. Important information before using Zentel

When not to use Zentel

  • If the patient has been found to be hypersensitive to albendazole or any of the other ingredients of the medicine (listed in section 6).
  • If the patient is pregnantor thinks she may be pregnant (see Pregnancy and breastfeeding). →

The patient should inform their doctor if they are affected by the above circumstances.

Warnings and precautions

Before starting to use Zentel, the patient should discuss it with their doctor:
If the patient is breastfeeding (see "Pregnancy and breastfeeding"),

  • if the patient has kidney or liver function disorders,
  • if the patient is elderly. →

The patient should inform their doctor if they are affected by the above circumstances.

If the patient experiences at least two of the following symptomsduring the use of Zentel:

  • headache (which can be severe),
  • seizures,
  • nausea,
  • vomiting,
  • visual disturbances, →

The patient should immediately consult their doctor.

These symptoms may be caused by the death of parasites in the brain.
In some people being treated for parasitic infections, a rare but serious brain infection caused by tapeworms, called neurocysticercosis, may occur at the same time. The patient may not be aware that they have this infection, and the use of Zentel may reveal it.

Zentel and other medicines

The patient should tell their doctor or pharmacist about all medicines they are taking, have recently taken, or plan to take.
Some medicines may affect the action of Zentel or increase the risk of side effects. These include:

  • cimetidine (used to treat stomach ulcers);
  • praziquantel (used to treat worm infections);
  • dexamethasone (used to treat inflammatory and allergic conditions);
  • ritonavir (used to treat HIV infection);
  • phenytoin (used to treat epilepsy);
  • carbamazepine (used to treat epilepsy and bipolar disorder);
  • phenobarbital (used as an anticonvulsant, sedative, and hypnotic). →

If the patient is taking or has recently taken any of these medicines, they should inform their doctor.

Using Zentel with food and drink

Zentel can be taken with or without food.

Pregnancy and breastfeeding


If the patient is pregnant or breastfeeding, thinks she may be pregnant, or plans to have a child, she should consult her doctor or pharmacist before using this medicine.
If a woman is pregnant or thinks she may be pregnant, the use of Zentel is contraindicated. Zentel may cause harm to the fetus.
In women of childbearing age, it is recommended to take Zentel during the first 7 days of menstruation or after a negative pregnancy test result. This is to avoid using Zentel in early pregnancy.
Women who are breastfeeding should not use Zentel unless the potential benefits outweigh the risks associated with treatment.
Women who are breastfeeding should consult their doctor before using Zentel, as a large amount of benzyl alcohol may accumulate in their body and cause side effects (such as metabolic acidosis).

Driving and using machines

Zentel may cause dizziness. If dizziness occurs, the patient should not drive or operate machinery.
Page 2 of 6

Zentel contains:

Benzonic acid
Zentel contains 46 mg of benzonic acid in each 20 ml of oral suspension, which is a moderate skin, eye, and mucous membrane irritant.
Sodium
This medicine contains less than 1 mmol (23 mg) of sodium in each 20 ml of oral suspension, which means that the medicine is considered "sodium-free".

3. How to use Zentel

Zentel should always be used as directed by the doctor.

If the patient has any doubts, they should consult their doctor or pharmacist.
If it is necessary to take more than one dose, it should be taken daily at the same time.

Dosage

Infection with pinworm, hookworm, roundworm, or whipworm

Adults and children over 2 years: 20 ml of suspension taken once.

Infection with tapeworm or roundworm

Adults and children over 2 years: 20 ml of suspension once a day for three consecutive days.
If the patient is not cured, the doctor may decide to repeat the treatment after three weeks.
If the patient feels that the effect of Zentel is too strong or too weak, they should consult their doctor.

Method of administration

Shake before use.
Zentel can be taken with or without food.
It is not necessary to take the medicine on an empty stomach or after bowel preparation.

Using a higher dose of Zentel than recommended

If the patient has taken a higher dose of Zentel than recommended, they should consult their doctor. If possible, they should show the doctor the packaging of the medicine.

Missing a dose of Zentel

The patient should not take an extra dose or a double dose to make up for a missed dose. They should take the next dose at the usual time.

Stopping the use of Zentel

The patient should not stop using Zentel without consulting their doctor.

If the patient has any further doubts about using the medicine, they should consult their doctor or pharmacist.

4. Possible side effects

Like all medicines, Zentel can cause side effects, although not everybody gets them.
Uncommon side effects(may affect up to 1 in 100 people):
Page 3 of 6

  • headache, dizziness,
  • nausea, vomiting, abdominal pain, diarrhea.

Rare side effects(may affect up to 1 in 1,000 people):

  • hypersensitivity reactions (e.g., rash, urticaria, itching).

Rare side effects that may appear in blood tests:

  • increased liver enzyme activity.

Very rare side effects(may affect less than 1 in 1,000 people):
severe skin reactions

  • erythema multiforme, characterized by a rash that may be blistering and looks like small targets (dark spots in the center, surrounded by a lighter area with a dark ring around),
  • Stevens-Johnson syndrome - a severe, widespread rash with blisters and peeling skin, occurring especially around the mouth, nose, eyes, and genitals. →

If the patient experiences any of the above symptoms, they should contact their doctor as soon as possible.

Other symptoms that may occur during the use of Zentel

See section 2 of the leaflet (subsection "If the patient experiences at least two of the following symptoms").

Reporting side effects

If the patient experiences any side effects, including any side effects not listed in the leaflet, they should tell their doctor, pharmacist, or nurse. Side effects can be reported directly to the Department of Monitoring of Adverse Reactions to Medicinal Products, Urząd Rejestracji Produktów Leczniczych, Wyrobów Medycznych i Produktów Biobójczych, Al. Jerozolimskie 181C, 02-222 Warszawa, tel.: 22 49-21-301, fax: 22 49-21-309, website: https://smz.ezdrowie.gov.pl
By reporting side effects, it is possible to gather more information on the safety of the medicine.

5. How to store Zentel

The medicine should be stored out of sight and reach of children.
Store in a temperature below 25°C.
Do not use this medicine after the expiry date stated on the packaging.
The expiry date refers to the last day of the month.
Medicines should not be disposed of via wastewater or household waste. The patient should ask their pharmacist how to dispose of medicines that are no longer needed. This will help protect the environment.

6. Contents of the pack and other information

What Zentel contains

  • The active substance of Zentel is albendazole. 20 ml of suspension contains 400 mg of albendazole.
  • The other ingredients are: aluminum magnesium silicate, sodium carmellose, glycerol, polysorbate 80, sorbitan monolaurate, potassium sorbate, benzonic acid, ascorbic acid, antifoam emulsion 1510, sodium saccharin (E 954), orange flavor, vanilla flavor, passion fruit flavor, purified water.

Page 4 of 6

What Zentel looks like and what the pack contains

Zentel is an oral suspension.
Zentel is packaged in a white, opaque PVC bottle with a capacity of 20 ml, with an aluminum cap, in a cardboard box.
For more detailed information, the patient should contact the marketing authorization holder or parallel importer:

Marketing authorization holder in Portugal, the country of export:

Perrigo Portugal, Lda.
Lagoas Park, Edifício 15 – 3° Piso
2740-262 - Porto Salvo
Portugal

Manufacturer:

Farmaclair
440, Avenue du Général de Gaulle
F-14200 Hérouville Saint-Clair
France

Parallel importer:

Delfarma Sp. z o.o.
ul. Św. Teresy od Dzieciątka Jezus 111
91-222 Łódź

Repackaged by:

Delfarma Sp. z o.o.
ul. Św. Teresy od Dzieciątka Jezus 111
91-222 Łódź
Portuguese marketing authorization number: 8644906

Parallel import authorization number: 908/12 Date of approval of the leaflet: 20.12.2022

7. Additional information on parasitic diseases

Parasitic infections occur when water or food containing parasite eggs or larvae is ingested, which then develop in the intestines. Since the disease may not cause any symptoms at an early stage, the infected person may not be aware of the infection.
Symptoms of the disease depend on the type of worm. Abdominal pain, nausea, diarrhea, anemia, and fatigue may occur. Some parasitic infections can cause symptoms related to other parts of the body, such as the liver, lungs, or brain.
Treatment of intestinal infections is usually easy. Since some worms can migrate to other parts of the body, it is essential to start treatment as soon as possible. This can prevent the development of the disease and permanent damage. Some untreated parasitic infections can be life-threatening.

Prevention of parasitic infections is necessary.

It is crucial to take measures to prevent re-infection, infection of others, and self-reinfection during the use of Zentel.

  • Hands should be washed with soap and water after using the toilet, contact with animals, and before each meal.
  • It should be ensured that meat intended for consumption has been prepared at a sufficiently high temperature, and fruits and vegetables have been washed in clean water before eating.

Page 5 of 6
[Information about the trademark]
Page 6 of 6

  • Country of registration
  • Active substance
  • Prescription required
    Yes
  • Marketing authorisation holder (MAH)
    Perrigo Portugal, Lda.
  • Alternatives to Zentel
    Dosage form: Suspension, 400 mg/20 ml
    Active substance: albendazole
    Prescription required
    Dosage form: Tablets, 400 mg
    Active substance: albendazole
    Prescription required
    Dosage form: Tablets, 400 mg
    Active substance: albendazole
    Prescription required

Alternatives to Zentel in other countries

The best alternatives with the same active ingredient and therapeutic effect.

Alternative to Zentel in Ukraine

Dosage form: tablets, tablets 400mg
Active substance: albendazole
Prescription required
Dosage form: suspension, 400mg/10ml
Active substance: albendazole
Manufacturer: Aspen Bad Oldeslo GmbH
Prescription required
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Active substance: albendazole
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Active substance: albendazole
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Dosage form: suspension, 200mg/5ml
Active substance: albendazole
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Active substance: albendazole
Manufacturer: TOV "Agrofarm
Prescription required

Alternative to Zentel in Spain

Dosage form: TABLET, 400 mg
Active substance: albendazole
Manufacturer: Glaxosmithkline S.A.
Prescription required
Dosage form: ORAL SOLUTION/SUSPENSION, 100 mg mebendazole/ 5 ml
Active substance: mebendazole
Prescription required
Dosage form: TABLET, 100 mg
Active substance: mebendazole
Prescription required

Online doctors for Zentel

Discuss dosage, side effects, interactions, contraindications, and prescription renewal for Zentel – subject to medical assessment and local rules.

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Liudmyla Boichuk

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Dr Liudmyla Boichuk is a family medicine doctor providing diagnosis and treatment for a wide range of acute and chronic conditions in adults and children. She works with respiratory, cardiovascular and digestive system disorders and has extensive experience caring for patients with multiple coexisting conditions, where coordinated, whole-person management is essential.

She treats adults with respiratory illnesses such as pneumonia, COPD and bronchial asthma, as well as cardiovascular conditions including hypertension and ischaemic heart disease. Her practice also covers gastrointestinal complaints and chronic comorbidities that require careful, structured medical supervision.

Dr Boichuk provides care for children from birth, including acute respiratory viral infections, infectious diseases, pneumonia, bronchitis, bronchial obstruction syndromes and allergic reactions. She offers clear, evidence-based guidance to parents and ensures safe follow-up throughout the child’s recovery.

Her work also includes developing personalised immunisation plans and supporting families with long-term preventive care.

Known for her structured clinical approach and clear communication, Dr Liudmyla Boichuk offers patients of all ages comprehensive, reliable and evidence-based medical care.

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Doctor

Svetlana Kolomeeva

Cardiology17 years of experience

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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Alina Tsurkan

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Dr. Alina Tsurkan is a licensed family medicine physician based in Portugal, offering online consultations for adults and children. She provides professional primary care, with a focus on prevention, accurate diagnosis, and long-term management of acute and chronic conditions.

Dr. Tsurkan supports patients with a wide range of health issues, including:

  • Respiratory infections: cold, flu, bronchitis, pneumonia, and lingering coughs.
  • ENT conditions: sinusitis, tonsillitis, otitis (ear infections), sore throat, allergic rhinitis.
  • Eye conditions: allergic or infectious conjunctivitis, red eyes, irritation.
  • Digestive issues: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), constipation, bloating, nausea.
  • Urinary and reproductive health: urinary tract infections (UTIs), cystitis, prevention of recurrent infections.
  • Chronic diseases: hypertension, elevated cholesterol, weight management.
  • Neurological complaints: headaches, migraines, sleep disturbances, fatigue, general weakness.
  • Children’s health: fever, infections, digestive issues, follow-ups, vaccination guidance.

She also provides:

  • IMT medical certificates for driving licence exchange in Portugal.
  • Personalised preventive care and wellness consultations.
  • Interpretation of test results and medical reports.
  • Follow-up care and medication review.
  • Support in managing multiple coexisting conditions.
  • Remote prescription management and medical documentation.

Dr. Tsurkan’s approach is evidence-based and holistic. She works closely with each patient to develop an individualised care plan that addresses both symptoms and root causes. Her goal is to empower patients to take control of their health and maintain well-being through lifestyle adjustments, routine check-ups, and early intervention.

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Mar Tabeshadze

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Dr. Mar Tabeshadze is a licensed endocrinologist and general practitioner in Spain. She provides online consultations for adults, offering medical support for a wide range of endocrine conditions and related health concerns.

  • Diagnostic consultations for suspected endocrine disorders
  • Management of thyroid conditions, including in pregnant women
  • Early detection and treatment of type 1 and type 2 diabetes, with personalised therapy plans
  • Obesity treatment: identifying underlying causes of weight gain, combining medication and non-pharmacological strategies, and long-term support
  • Diagnosis and treatment of endocrine-related skin, hair, and nail issues
  • Ongoing care for patients with osteoporosis, pituitary, and adrenal gland disorders
Dr. Tabeshadze takes a patient-centred approach based on evidence-based medicine. Her goal is to help patients achieve hormonal balance, manage chronic conditions effectively, and improve overall well-being through targeted, personalised care.
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Lina Travkina

Family medicine12 years of experience

Dr. Lina Travkina is a licensed family and preventive medicine doctor based in Italy. She provides online consultations for adults and children, supporting patients across all stages of care – from acute symptom management to long-term health monitoring and prevention.

Areas of medical care include:

  • Respiratory conditions: colds, flu, acute and chronic bronchitis, mild to moderate pneumonia, bronchial asthma.
  • ENT and eye conditions: sinusitis, tonsillitis, pharyngitis, otitis, infectious and allergic conjunctivitis.
  • Digestive issues: gastritis, acid reflux (GERD), IBS, dyspepsia, bloating, constipation, diarrhoea, functional bowel symptoms, intestinal infections.
  • Urological and infectious diseases: acute and recurrent cystitis, bladder and kidney infections, prevention of recurrent UTIs, asymptomatic bacteriuria.
  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
  • Neurological and general symptoms: headache, migraine, dizziness, fatigue, sleep disturbances, reduced concentration, anxiety, asthenia.
  • Chronic pain support: back, neck, joint, and muscle pain, tension syndromes, pain associated with osteochondrosis and chronic conditions.

Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
  • Test interpretation and diagnostic guidance.
  • Structured support for undiagnosed complaints.
  • Second opinion on diagnoses and treatment plans.
  • Nutritional and lifestyle support for vitamin deficiencies, anaemia, metabolic issues.
  • Post-operative recovery support and pain management.
  • Preconception counselling and postpartum support.
  • Immunity support and strategies to reduce frequency of infections.

Dr. Travkina combines evidence-based medicine with an attentive, personalised approach. Her consultations focus not only on treatment, but also on prevention, recovery, and long-term wellbeing.

If during the consultation it becomes clear that your case requires in-person assessment or specialised care outside of her scope, the session will be terminated and the payment fully refunded.

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Alexandra Alexandrova

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Areas of expertise:

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  • Scalp conditions: seborrheic dermatitis, psoriasis, scalp irritation, dandruff.
  • Chronic conditions: hypertension, diabetes, metabolic disorders.
  • Online trichology consultation: customised treatment plans, nutritional support, hair growth stimulation.
  • Hair loss prevention: hormonal imbalance, stress factors, haircare strategies.
  • Routine health check-ups, prevention of cardiovascular and metabolic diseases.
  • Personalised nutritional advice to improve hair strength, skin health, and hormonal balance.
  • Aesthetic medicine: non-invasive strategies to enhance skin quality, tone, and metabolic wellness.

Dr Alexandrova follows an evidence-based and holistic approach: online consultations with a therapist and trichologist on Oladoctor provide professional support for hair, scalp, and overall health — all from the comfort of your home.

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