Background pattern
Zabak

Zabak

Ask a doctor about a prescription for Zabak

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 Zabak

Package Leaflet: Information for the User

Warning! Keep the Leaflet! Information on the Immediate Packaging in a Foreign Language.

Zabak(Zalerg)

0.25 mg/ml, Eye Drops, Solution

Ketotifenum
Zabak and Zalerg are different trade names for the same medicine.

Read the Leaflet Carefully Before Using the Medicine, as it Contains Important Information for the Patient.

This medicine should always be used exactly as described in the patient leaflet or as directed by a doctor, pharmacist, or nurse.

  • Keep this leaflet, so you can read it again if you need to.
  • If you need advice or more information, ask your pharmacist.
  • If you experience any side effects, including those not listed in the leaflet, tell your doctor, pharmacist, or nurse. See section 4.
  • If after 7 days there is no improvement or you feel worse, contact your doctor (see section 2).

Table of Contents of the Leaflet

  • 1. What is Zabak and What is it Used For
  • 2. Important Information Before Using Zabak
  • 3. How to Use Zabak
  • 4. Possible Side Effects
  • 5. How to Store Zabak
  • 6. Contents of the Packaging and Other Information

1. What is Zabak and What is it Used For

Zabak is an eye drop solution without preservatives, containing ketotifen, which is an antiallergic agent.
Zabak is used to treat symptoms of seasonal allergic conjunctivitis.
The most common symptoms of seasonal allergic conjunctivitis are intense itching of both eyes, accompanied by redness, swelling, excessive tearing, swelling of the conjunctiva, and sensitivity to light. These symptoms are recurring and start with the beginning of the pollen season.
Seasonal allergic conjunctivitis may also be associated with other symptoms of hay fever, such as rhinitis.
If after 7 days there is no improvement or you feel worse, contact your doctor (see section 2).

2. Important Information Before Using Zabak

When Not to Use Zabak:

  • if you are allergic (hypersensitive) to ketotifen (active substance) or any of the other ingredients of this medicine (listed in section 6).

Warnings and Precautions

Before starting to use Zabak, discuss it with your doctor, pharmacist, or nurse.
If after 7 days there is no improvement or you feel worse, contact your doctor.
The following objective and subjective symptoms do not usually occur in seasonal allergic conjunctivitis:

  • purulent discharge,
  • vision disturbances,
  • morning eyelid sticking, difficulty opening the eyes in the morning,
  • swelling of lymph nodes in the ear area,
  • persistent symptoms (persistence of symptoms),
  • unilateral symptoms. If any of the above symptoms occur, you may have another eye condition than seasonal allergic conjunctivitis. Consult your doctor.

Zabak and Other Medicines

If you need to use another eye medicine at the same time as Zabak, wait at least 5 minutes between applications.
Tell your doctor or pharmacist about all medicines you are taking, have recently taken, or plan to take.
This is especially important for medicines used to treat:

  • depression, anxiety, and sleep disorders,
  • allergies (e.g., antihistamines).

Zabak with Food, Drink, and Alcohol

  • the medicine may enhance the effect of alcohol.

Pregnancy and Breastfeeding

It is recommended to avoid using Zabak during pregnancy.
If you are pregnant, think you may be pregnant, or plan to have a child, consult your doctor or pharmacist before using this medicine.
Zabak can be used during breastfeeding.

Driving and Using Machines

Zabak may cause vision disturbances or drowsiness.
If you experience such symptoms after using the medicine, wait until they resolve before driving or operating machinery.

3. How to Use Zabak

This medicine should always be used exactly as described in the patient leaflet or as directed by your doctor or pharmacist. If you are unsure, ask your doctor or pharmacist.
Dosage
Adults, Elderly, Children Over 3 Years
The recommended dose is 1 drop into the affected eye(s) twice a day (morning and evening).
Method of Administration
Do not inject, do not swallow.
The medicine is intended for administration into the eye (eye administration).
Before the First Use, remove the first 5 drops.
Then, with Each Use of the Medicine:

  • 1. Before using the medicine, wash your hands thoroughly.
  • 2. To avoid contaminating the drops, do not touch the eye, eyelids, or other surfaces with the dropper tip.
  • 3. Instill 1 drop into the eye(s), looking up and gently pulling down the lower eyelid.
  • 4. Close the eyelid and gently press the inner corner of the eye with your index finger for 1-2 minutes. This will help prevent the medicine from spreading throughout the body.
  • 5. After use, close the bottle.

If you feel that the effect of Zabak is too strong or too weak, or if you experience any side effects, consult your doctor or pharmacist.

Using More Than the Recommended Dose of Zabak

There is no risk if you accidentally swallow a few drops of Zabak. Similarly, do not worry if you accidentally administer more than one drop into the eye.

Missing a Dose of Zabak

Instill the medicine as soon as possible, and then return to the recommended dosing schedule.
Make sure the drop gets into the eye. Do not use a double dose to make up for a missed dose.
If you have any further doubts about using this medicine, consult your doctor or pharmacist.

4. Possible Side Effects

Like all medicines, Zabak can cause side effects, although not everybody gets them.
If you experience allergic reactions, including rash, swelling of the face, lips, tongue, and/or
throat, which may cause difficulty breathing or swallowing, or other serious side effects, stop using Zabak and contact your doctor or the Emergency Department of the nearest hospital immediately.
The following side effects have been reported:

Common (occurring in less than 1 in 10 people):

  • eye irritation or pain,
  • eye inflammation.

Uncommon (occurring in less than 1 in 100 people):

  • blurred vision,
  • dry eye syndrome,
  • eyelid irritation,
  • conjunctivitis (inflammation of the eye surface),
  • increased sensitivity of the eyes to light,
  • visible bleeding in the sclera of the eye,
  • headache,
  • drowsiness,
  • rash (which may also be itchy),
  • erythema (itchy, red, burning rash),
  • dry mouth.

Unknown (frequency cannot be estimated from available data)

  • allergic reaction (including face and eyelid swelling) and increased severity of existing allergic conditions, such as asthma or eczema,
  • dizziness.

Reporting Side Effects

If you experience any side effects, including those not listed in the leaflet, tell your doctor, pharmacist, or nurse. Side effects can be reported directly to the Department of Monitoring of Adverse Reactions to Medicinal Products of the Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products, Al. Jerozolimskie 181C, 02-222 Warsaw, tel.: +48 22 49 21 301, fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl.
By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to Store Zabak

Keep the medicine out of sight and reach of children.
Do not use this medicine after the expiration date stated on the packaging. The expiration date is the last day of the specified month.
Shelf life after first opening the bottle: 3 months.
No special precautions for storage.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.

6. Contents of the Packaging and Other Information

What Zabak Contains

  • The active substance is: ketotifen 0.25 mg/ml (as ketotifen hydrogen fumarate 0.345 mg/ml).
  • The other ingredients are: glycerol, sodium hydroxide (for pH adjustment), water for injections.

What Zabak Looks Like and What the Packaging Contains

Zabak is an eye drop solution available in a 5 ml multidose bottle (at least 150 drops without preservatives). It is a colorless to light brown-yellow liquid.
The bottle has a filter membrane (0.2 microns), which protects the solution from microbial contamination during use.
For more detailed information, contact the marketing authorization holder or the parallel importer.

Marketing Authorization Holder in France, the Country of Export:

Laboratoires THEA
12, rue Louis Blériot
63017 Clermont-Ferrand Cedex 2
France

Manufacturer:

EXCELVISION
27, rue de la Lombardiere
F-07100 Annonay
France
FARMILA-THEA Farmaceutici S.p.A
Via E. Fermi, 50
20019 Settimo Milanese (MI)
Italy
Laboratoires THEA
12, rue Louis Blériot
F-63017 Clermont-Ferrand Cedex 2
France

Parallel Importer:

InPharm Sp. z o.o.
ul. Strumykowa 28/11
03-138 Warsaw

Repackaged by:

Pharma Innovations Sp. z o.o.
ul. Jagiellońska 76
03-301 Warsaw
InPharm Sp. z o.o. Services sp. k.
ul. Chełmżyńska 249
04-458 Warsaw
Authorization Number in France, the Country of Export:492 503-1
34009 492 503 1 8
Parallel Import Authorization Number:368/18

This Medicinal Product is Authorized for Sale in the Member States of the European Economic Area Under the Following Names:

Austria
ZADITEN OPHTHA ABAK
Italy
ZADITEN OFTABAK
Bulgaria, Greece, Poland, Portugal, Romania
ZABAK
Denmark, France
ZALERG
Belgium, Luxembourg, Netherlands
ALTRIABAK

Date of Approval of the Leaflet: 01.12.2023

[Information about the Trademark]

  • Country of registration
  • Active substance
  • Prescription required
    No
  • Marketing authorisation holder (MAH)
    Laboratoires Thea
  • Alternatives to Zabak
    Dosage form: Drops, 0.25 mg/ml
    Active substance: ketotifen
    Prescription required
    Dosage form: Drops, 0.25 mg/ml
    Active substance: ketotifen
    Dosage form: Drops, 0.25 mg/ml
    Active substance: ketotifen
    Prescription not required

Alternatives to Zabak in other countries

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

Alternative to Zabak in Spain

Dosage form: EYEDROP, 0.25 mg/ml
Active substance: ketotifen
Prescription required
Dosage form: EYE DROP, 0.25 mg/ml
Active substance: ketotifen
Prescription required
Dosage form: EYE DROP, 0.25 mg/ml
Active substance: ketotifen
Manufacturer: Laboratoires Thea
Prescription required
Dosage form: EYEDROP, 0.25mg/ml
Active substance: ketotifen
Manufacturer: Pharma Stulln Gmbh
Prescription required
Dosage form: EYE DROP, 0.25 mg/ml
Active substance: ketotifen
Manufacturer: Laboratoires Thea
Prescription required
Dosage form: EYEDROP, 0.25 mg/ml
Active substance: ketotifen
Manufacturer: Horus Pharma
Prescription required

Alternative to Zabak in Ukraine

Dosage form: drops, 0.25 mg/ml, 0.4 ml in a dropper bottle
Active substance: ketotifen
Manufacturer: Farma Stul'n GmbH
Prescription required
Dosage form: drops, 0.25 mg/ml in 5 ml bottle
Active substance: ketotifen

Online doctors for Zabak

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

0.0(0)
Doctor

Abdullah Alhasan

General medicine10 years of experience

Dr. Abdullah Alhasan is a physician specialising in cardiology and general medicine, with international clinical experience and a commitment to evidence-based care. He offers online consultations for adults, focusing on both acute symptoms and long-term health management.

Main areas of consultation:

  • Chest pain, shortness of breath, heart palpitations, high blood pressure
  • Hypertension control and cardiovascular disease prevention
  • Interpretation of ECG, blood tests, and Holter monitor results
  • Management of heart failure and coronary artery disease
  • General medical issues: infections, fever, fatigue, gastrointestinal symptoms
  • Guidance on diagnostics, treatment plans, and medication adjustments
Dr. Alhasan’s approach is based on thorough assessment, clear communication, and personalised care – helping patients understand their health and make informed decisions about their treatment.
CameraBook a video appointment
€69
Today02:00
Today02:15
Today02:30
Today02:45
Today03:00
More times
5.0(1)
Doctor

Ngozi Precious Okwuosa

General medicine5 years of experience

Dr. Ngozi Precious Okwuosa is a Primary Care Physician with over 5 years of clinical experience in Hungary, Sweden, and Nigeria. A graduate of the University of Szeged (cum laude), she offers online consultations for adults in the areas of internal medicine, women’s health, and postoperative care.

Key areas of consultation:

  • Preventive and family medicine
  • Women’s health, including gynaecology and obstetrics
  • Chronic disease management: hypertension, diabetes, and more
  • Mental health support, anxiety, and counselling
  • Postoperative care and lab test interpretation
She has conducted research on the genetic background of stroke and is skilled in communicating with patients from diverse cultural backgrounds. Her approach combines clinical expertise with empathy and clear communication.
CameraBook a video appointment
€60
Today05:00
Today05:50
Today06:40
Today07:30
Today08:20
More times
5.0(15)
Doctor

Taisiya Minorskaya

Family medicine12 years of experience

Dr Taisiya Minorskaya is a family medicine doctor with an official licence to practise in Spain and over 12 years of clinical experience. She provides online consultations for adults and children, combining evidence-based medicine with a personalised, modern European approach.

She helps with:

  • Viral infections and cold symptoms (flu, sore throat, cough, runny nose)
  • Review and adjustment of antibiotics
  • Skin rashes and allergic reactions
  • Chronic condition flare-ups, high blood pressure, headaches, fatigue
  • Lab and test interpretation
  • Medication review and adaptation to European standards
  • Patient navigation: what tests are needed, which specialists to see, when an in-person visit is required
Dr Minorskaya also specialises in the diagnosis and management of gastrointestinal conditions, including bloating, abdominal pain, chronic nausea, IBS, and SIBO. She supports patients with unexplained physical symptoms that may be linked to somatisation or stress, helping them find relief and improve quality of life.

She offers care for people undergoing GLP-1 therapy (Ozempic, Mounjaro, and others) for weight management. Her support follows Spanish clinical guidelines, from treatment planning and side effect counselling to regular follow-ups and coordination with private or public healthcare providers.

CameraBook a video appointment
€65
Today08:00
Today08:30
Today09:30
Today10:00
Today10:30
More times
5.0(30)
Doctor

Nuno Tavares Lopes

Family medicine17 years of experience

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC. He offers online consultations in Portuguese, English, and Spanish — combining global expertise with a patient-centred, evidence-based approach.

  • Emergency care: infections, fever, chest/abdominal pain, minor injuries, paediatric emergencies
  • Family medicine: hypertension, diabetes, cholesterol, chronic disease management
  • Travel medicine: pre-travel advice, vaccinations, fit-to-fly certificates, travel-related illnesses
  • Sexual and reproductive health: PrEP, STD prevention, counselling, treatment
  • Weight management and wellness: personalised weight loss programmes, lifestyle guidance
  • Skin and ENT issues: acne, eczema, allergies, rashes, sore throat, sinusitis
  • Pain management: acute and chronic pain, post-surgical care
  • Public health: prevention, health screenings, long-term monitoring
  • Sick leave (Baixa médica) connected to Segurança Social in Portugal
  • IMT medical certificates for driving licence exchange
Dr. Lopes also provides interpretation of medical tests, follow-up care for complex patients, and multilingual support. Whether for urgent concerns or long-term care, he helps patients act with clarity and confidence.
CameraBook a video appointment
€59
Today09:00
Today09:20
Today09:40
Today10:00
Today10:20
More times
5.0(10)
Doctor

Duarte Meneses

Family medicine4 years of experience

Dr. Duarte Meneses is a licensed family medicine and general practice doctor based in Portugal, with additional expertise in occupational health. He provides online consultations for adults, offering medical support for both acute symptoms and chronic health conditions.

  • Common symptoms such as fever, sore throat, cough, fatigue, or digestive issues
  • Chronic conditions including hypertension, diabetes, high cholesterol, and thyroid problems
  • Mental health concerns such as stress, sleep issues, anxiety, and burnout
  • Preventive care: health check-ups, lifestyle advice, and follow-up for existing conditions
  • Work-related health questions, sick leave documentation, and medical guidance for returning to work
Dr. Meneses graduated from the University of Beira Interior and has years of experience working with diverse patient populations. He is fluent in Portuguese, English, Spanish, and French.

His approach is friendly, clear, and focused on delivering practical medical advice tailored to each patient’s needs.

CameraBook a video appointment
€65
Today09:00
Today09:25
Today09:50
Today10:15
Today10:40
More times
0.0(3)
Doctor

Svetlana Kovalenko

Family medicine14 years of experience

Dr Svetlana Kovalenko is a family medicine doctor with over 14 years of experience and a medical degree from Kharkiv National Medical University. She offers online consultations for adults, supporting patients with both acute and chronic conditions, preventive care, and personalised medical advice.

What patients commonly consult her for:

  • High blood pressure, type 2 diabetes, cholesterol management
  • Cold and flu symptoms: fever, cough, sore throat
  • Fatigue, sleep problems, headaches, general discomfort
  • Ongoing care for chronic conditions and medication review
  • Help interpreting test results and lab reports
  • Preventive check-ups and advice on healthy lifestyle habits

Dr Kovalenko combines evidence-based practice with a respectful, patient-centred approach. She takes time to explain, listens attentively, and helps each person make confident, informed decisions about their health.

CameraBook a video appointment
€55
Today09:00
Today09:25
Today09:50
Today10:15
Today10:40
More times
5.0(17)
Doctor

Sergio Correa

General medicine7 years of experience

Dr. Sergio Correa is a licensed general practitioner, aesthetic medicine specialist, and trichologist with experience in emergency care and preventive health. He offers online consultations in English and Spanish, supporting adult patients with a wide range of medical concerns – from acute symptoms to chronic condition management.

His areas of focus include:

  • General and urgent care: fever, fatigue, infections, digestive issues, respiratory symptoms, and other common concerns
  • Chronic condition support: hypertension, high cholesterol, diabetes, thyroid issues
  • Aesthetic medicine and dermatology: acne, skin ageing, hyperpigmentation, personalised skincare guidance
  • Trichology: hair loss, scalp conditions, treatment strategies for men and women
  • Preventive care: health check-ups, lifestyle advice, second opinions

Dr. Correa combines medical knowledge with an aesthetic and holistic approach to help patients improve both health and quality of life.

CameraBook a video appointment
€40
Today13:00
Today14:00
Today15:00
Today16:00
November 213:00
More times
5.0(14)
Doctor

Jonathan Marshall Ben Ami

Family medicine8 years of experience

Dr. Jonathan Marshall Ben Ami is a licensed family medicine doctor in Spain. He provides comprehensive care for adults and children, combining general medicine with emergency care expertise to address both acute and chronic health concerns.

Dr. Ben Ami offers expert diagnosis, treatment, and follow-up for:

  • Respiratory infections (cold, flu, bronchitis, pneumonia).
  • ENT conditions such as sinusitis, ear infections, and tonsillitis.
  • Digestive issues including gastritis, acid reflux, and irritable bowel syndrome (IBS).
  • Urinary tract infections and other common infections.
  • Management of chronic diseases: high blood pressure, diabetes, thyroid disorders.
  • Acute conditions requiring urgent medical attention.
  • Headaches, migraines, and minor injuries.
  • Wound care, health check-ups, and ongoing prescriptions.

With a patient-focused and evidence-based approach, Dr. Ben Ami supports individuals at all stages of life — offering clear medical guidance, timely interventions, and continuity of care.

CameraBook a video appointment
€55
Today13:30
Today14:15
Today15:00
November 813:30
November 814:15
More times
0.0(1)
Doctor

Maryna Kuznetsova

Cardiology16 years of experience

Dr Marina Kuznetsova is an internal medicine doctor and cardiologist with a PhD in medicine. She provides online consultations for adults with chronic and acute conditions, with a strong focus on cardiovascular health. Her approach is based on current clinical guidelines and evidence-based treatment strategies.

Areas of expertise:

  • dyslipidaemia and lipid metabolism disorders
  • prevention and management of atherosclerosis
  • blood pressure monitoring and antihypertensive therapy
  • arrhythmias: diagnosis, follow-up, and treatment adjustment
  • cardiovascular care and recovery support after Covid-19
Dr Kuznetsova helps patients manage cardiovascular risk factors, optimise long-term treatment, and gain clarity in complex health situations – all through accessible and structured online care.
CameraBook a video appointment
€50
November 207:00
November 207:50
November 208:40
November 209:30
November 210:20
More times
0.0(0)
Doctor

Karim BenHarbi

General medicine8 years of experience

Dr. Karim Ben Harbi is a licensed general practitioner based in Italy. He provides online consultations for adults and children, combining international clinical experience with evidence-based medicine. His care approach is focused on accurate diagnosis, preventive care, and personalised health guidance.

Dr. Ben Harbi received his medical degree from Sapienza University in Rome. His training included hands-on experience in diverse settings — tropical medicine, rural healthcare, and urban outpatient practice. He also conducted clinical research in microbiology, exploring the role of the gut microbiome in chronic gastrointestinal issues.

You can consult Dr. Ben Harbi for:

  • General health concerns, prevention, and primary care.
  • Hypertension, type 1 and type 2 diabetes, metabolic issues.
  • Cold, cough, flu, respiratory infections, sore throat, fever.
  • Chronic digestive issues: bloating, gastritis, IBS, microbiome imbalance.
  • Skin rashes, mild allergic reactions, basic dermatological complaints.
  • Medication guidance, treatment adjustments, prescription review.
  • Paediatric concerns — fever, infections, general well-being.
  • Lifestyle optimisation: stress, sleep, weight, and diet counselling.

Dr. Ben Harbi offers reliable, accessible medical support through online consultations, helping patients make informed decisions about their health with a clear, structured, and compassionate approach.

CameraBook a video appointment
€79
November 211:00
November 211:30
November 212:00
November 212:30
November 213:00
More times

Get updates and exclusive offers

Be the first to know about new services, marketplace updates, and subscriber-only promos.

Follow us on social media
FacebookInstagram
Logo
Oladoctor
Find a doctor
Doctors by specialty
Services
Choose language
© 2025 Oladoctor. All rights reserved.
VisaMastercardStripe