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ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS

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About the medicine

How to use ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS

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This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Leaflet: Information for the user

Zaditen0.25 mg/ml eye drops in solution in single-dose containers

Ketotifen

Read this leaflet carefully before starting to use this medicine, as it contains important information for you.

  • Keep this leaflet, as you may need to read it again.
  • If you have any questions, ask your doctor, pharmacist, or nurse.
  • This medicine has been prescribed to you only, and you should not give it to others, even if they have the same symptoms as you, as it may harm them.
  • If you experience side effects, consult your doctor, pharmacist, or nurse, even if they are not listed in this leaflet. See section 4.

Contents of the leaflet:

  1. What is Zaditen and what is it used for
  2. What you need to know before using Zaditen
  3. How to use Zaditen
  4. Possible side effects
  5. Storage of Zaditen
  6. Package contents and additional information

1. What is Zaditen and what is it used for

Zaditen contains the active substance ketotifen, which is an antiallergic substance. Zaditen is used to treat the ocular symptoms of seasonal allergic conjunctivitis.

You should consult a doctor if it worsens or does not improve.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before using Zaditen

Do not use Zaditen

If you are allergic to ketotifen or any of the other components of this medicine (listed in section 6).

Warnings and precautions

Consult your doctor, pharmacist, or nurse before starting to use Zaditen.

Using Zaditen with other medicines

If you need to apply any other eye medicine in addition to Zaditen, wait at least 5 minutes between the application of each product.

Tell your doctor or pharmacist if you are using or have recently used or may need to use any other medicine. This is especially important in the case of medicines used to treat:

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

Using Zaditen with food, drinks, and alcohol

Zaditen may increase the effects of alcohol.

Pregnancy and breastfeeding

If you are pregnant, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.

Zaditen can be used during breastfeeding.

Driving and using machines

Zaditen may cause blurred vision or drowsiness. Do not drive or use machines until these effects have disappeared.

3. How to use Zaditen

Follow exactly the administration instructions of this medicine indicated by your doctor or pharmacist. In case of doubt, consult your doctor or pharmacist again.

The recommended dose for adults, elderly, and children (3 years or older) is one drop in the affected eye(s) twice a day (morning and evening).

A single-dose container contains enough solution to treat both eyes in one application.

Instructions for use

  1. Wash your hands.
  2. Open the blister pack and remove the block of single-dose containers.
  3. Separate a single-dose container from the strip (Fig. 1).
  4. Store the remaining single-dose containers back in the blister pack and close the blister pack by folding the edge. Store the blister pack in the carton.
  5. Open the single-dose container by twisting the top. After opening, do not touch the tip of the dropper (Fig. 2).
  6. Tilt your head back (Fig. 3).
  7. Pull the lower eyelid down with your finger and hold the container with the other hand. Squeeze the container so that one drop falls into the eye (Fig. 4).
  8. Close your eyes and press the inner corner of the eye with the tip of your finger for 1-2 minutes. This prevents the drop from flowing down the tear duct into the throat, and most of the drop will remain in the eye (Fig. 5). If necessary, repeat steps 6 to 8 with the other eye.
  9. Discard the container after use.

Series of five schematic drawings showing the subcutaneous injection technique with skin fold and 45-degree angle

Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5

If you have any further questions about the use of this product, ask your doctor, pharmacist, or nurse.

If you use more Zaditen than you should

There is no danger if you accidentally take Zaditen orally, nor if more than one drop accidentally falls into your eye. In case of doubt, consult your doctor. Also, in case of overdose or accidental ingestion, you can contact the Toxicological Information Service: Tel.: 91 562 04 20.

If you forget to use Zaditen

If you forget to use Zaditen, apply the treatment as soon as you remember. Then, return to your regular treatment schedule. Do not take a double dose to make up for the forgotten doses.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everyone gets them.

The following side effects have been reported.

Common(affect less than 1 in 10patients)

  • eye irritation or eye pain
  • eye inflammation

-

Uncommon(affect less than1 in 100patients)

  • blurred vision when applying the drops in the eye
  • eye dryness
  • eyelid changes
  • conjunctivitis
  • increased sensitivity of the eyes to light
  • visible bleeding in the white part of the eye
  • headache
  • drowsiness
  • rash (which can also cause itching)
  • eczema (itching, redness, rash with itching)
  • dry mouth
  • allergic reaction (including swelling of the face and eyelids) and increased severity of an existing allergic condition such as asthma and eczema

Reporting side effects

If you experience any side effects, consult your doctor or pharmacist, even if they are not listed in this leaflet. You can also report them directly through the Spanish Medicines Agency's website: www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Zaditen

Keep this medicine out of the sight and reach of children.

Do not store above 25°C.

After opening a blister pack/bag, unused single-dose containers can be stored for 3 months if stored in the outer carton packaging or, if not, for 4 weeks.

The single-dose container itself is not sterile, but its contents are sterile until the container is opened.

Once opened, the contents of the single-dose container should be used immediately and not stored.

Do not use this medicine after the expiration date stated on the packaging after CAD. The expiration date is the last day of the month indicated.

Medicines should not be disposed of via wastewater or household waste. Dispose of the packaging and any unused medicine in the pharmacy's SIGRE collection point. If in doubt, ask your pharmacist how to dispose of the packaging and any unused medicine. This will help protect the environment.

6. Package contents and additional information

Zaditen composition

The active substance is ketotifen (as fumarate). Each ml contains 0.345 mg of ketotifen fumarate, which corresponds to 0.25 mg of ketotifen.

The other ingredients are glycerol (E422), sodium hydroxide (E524), and water for injectable preparations.

Appearance of the product and package contents

Zaditen is a clear, colorless to pale yellow solution. A single-dose container contains 0.4 ml. Zaditen is available in packs containing 5, 10, 20, 30, 50, and 60 single-dose containers.

Not all pack sizes may be marketed in your country.

Marketing authorization holder

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

Manufacturer

EXCELVISION – 27 rue de la Lombardière – 07100 Annonay - France.

Or

Laboratoire UNITHER, 1 rue de l’Arquerie, 50200 COUTANCES, France

Local representative

Laboratorios THEA S.A. – C/ Enric Granados nº 86-88, 2ª planta, 08008 Barcelona

This medicine is authorized in the Member States of the European Economic Area under the following names:

Austria Zaditen konservierungsmittelfrei 0,025% - Augentropfen in Einzeldosisbehältnissen

Czech Republic Zaditen SDU

Denmark Zaditen

Finland Zaditen 0,25 mg/ml silmätipat, liuos kerta-annospakkauksessa

France Zagrapa, 0,25 mg/ml, collyre en solution en récipient unidose

Germany Zaditen ophtha sine 0,25 mg/ml Augentropfen Lösung in Einzeldosisbehältnissen

Greece Zaditor οφθαλμικές σταγόνες

Iceland Zaditen

Luxembourg Zaditen Unidose, 0,25 mg/ml, collyre en solution en récipient unidose

Norway Zaditen

Portugal Zaditen 0,25 mg/ml colírio, solução em unidoses

Spain Zaditen 0,25 mg/ml colirio en solución en envases unidosis

Sweden Zaditen 0,25 mg/ml, ögondroppar, lösning i endosbehållare

Netherlands Zaditen Unidose 0,25 mg/ml, oogdruppels, oplossing

Date of the last revision of this leaflet:03/07/2020

Detailed and updated information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.es/

Online doctors for ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS

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Hocine Lokchiri

General medicine 21 years exp.

Dr. Hocine Lokchiri is a French consultant with over 20 years of experience in General and Emergency Medicine. He works with adults and children, helping patients with urgent symptoms, infections, sudden health changes and everyday medical concerns that require timely evaluation. His background includes clinical practice in France, Switzerland and the United Arab Emirates, which allows him to navigate different healthcare systems and manage a wide range of conditions with confidence. Patients value his calm, structured approach, clear explanations and evidence-based decision-making.

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  • muscle or joint pain, mild injuries, sprains
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Many patients reach out when symptoms appear suddenly and cause concern, when a child becomes unwell unexpectedly, when a rash changes or spreads, or when it’s unclear whether an in-person examination is necessary. His emergency medicine background is particularly valuable online, helping patients understand risk levels, identify warning signs and choose safe next steps.

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Dr. Lokchiri’s professional training includes:

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He is an active member of several professional organisations, including the French Society of Emergency Medicine (SFMU), the French Association for Emergency Physicians (AMUF) and the Swiss Society of Emergency and Rescue Medicine (SGNOR). In consultations, he works with clarity and precision, helping patients understand their symptoms, possible risks and the safest treatment options.
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Chikeluo Okeke

General medicine 4 years exp.

Dr Chikeluo Okeke is an internal medicine doctor with extensive international clinical experience. Originally from Nigeria, he has worked across multiple European healthcare systems and currently practises in Sweden. This professional path has given him a strong understanding of different medical approaches and the ability to work effectively with patients from diverse cultural and linguistic backgrounds.

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He provides online consultations covering symptom assessment, prevention, and long-term management of chronic conditions, helping patients understand what is happening and decide on appropriate next steps.

Common reasons for consultation:

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Online consultations with Dr Chikeluo Okeke offer reliable internal medicine care without geographic limitations, focused on medical relevance, clarity, and patient comfort.

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Andrei Popov

General medicine 7 years exp.

Dr. Andrei Popov is a family physician with specialized training in the management of chronic pain. He provides video consultations for adults in Spain and across Europe: whether you have been living with pain for months that no one has been able to properly explain, or you need to resolve a health issue without waiting weeks for an appointment.

His approach is clear: to listen, organize your case, and provide you with a practical roadmap based on evidence-based medicine and adapted to your medical history and personal needs.

Pain: how he can help

  • Chronic pain (more than 3 months
  • Migraine and recurrent or high-intensity headaches
  •  Neck, lower back, back and joint pain
  •  Post-traumatic pain after injuries or surgeries
  •  Pain of neurological origin: neuralgia, neuropathic pain, fibromyalgia

General medicine

  • Frequent respiratory infections (cold, flu, persistent cough)
  • Hypertension, diabetes and metabolic disorders
  • Review of laboratory tests and MRI/CT reports (explained in clear language)
  • Preventive medicine and health monitoring
  • Second opinions and treatment adjustments (when clinically appropriate)

What the consultation is like
 Each session lasts up to 30 minutes. We review symptoms, medical history, medications and any tests you provide, and you finish the consultation with a clear treatment plan, defined next steps, and criteria to understand when follow-up may be needed. If warning signs are detected, he will clearly advise whether you need in-person care or urgent medical attention.

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Yevgen Yakovenko

General surgery 12 years exp.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

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Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
  • Member of the German Society of Surgeons (BDC).
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Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

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Joao Silva

General medicine 6 years exp.

Dr. João Silva is a physician with training and experience in the field of General and Family Medicine, dedicated to providing healthcare focused on the well-being and quality of life of his patients. Throughout his professional career, he has developed broad clinical competencies, striving to maintain a medical practice based on scientific evidence and continuous knowledge updates.

Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

Subsequently, between January 2021 and December 2021, he completed the General Internship at the Entre Douro e Vouga Hospital Center in Santa Maria da Feira, where he had the opportunity to work in different hospital settings and deepen his competencies in several areas of medicine.

From January 2022 until March 2026, he works as a Resident Physician in General and Family Medicine at USF Salvador Machado in Oliveira de Azeméis, developing clinical activities in primary healthcare, follow-up of chronic patients, and health promotion in the community.

Complementing his medical training, Dr. João Silva also completed a Postgraduate Degree in Continuing and Palliative Care at CESPU, strengthening his preparation in the comprehensive approach to patient care, especially in situations requiring prolonged care and multidisciplinary support.

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Bulat Garipov

General medicine 15 years exp.

Dr. Bulat Garipov is a radiologist with more than 15 years of experience, specializing in magnetic resonance imaging (MRI). Throughout his professional career, he has worked in leading diagnostic imaging centers, both in on-site practice and teleradiology, which has allowed him to develop a broad and versatile approach to radiology.

Over the years, he has gained solid experience in interpreting MRI studies in various areas, including:

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  •  Musculoskeletal system (MSK)
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  •  Soft tissues

Additionally, Dr. Garipov is open to new collaboration opportunities in radiology and teleradiology projects. He offers his expertise in MRI, providing both first and second readings of studies, as well as advanced image interpretation, ensuring accurate and high-quality diagnostics.

You could consult Dr. Bulat Garipov in cases where accurate interpretation of MRI studies or a second expert opinion is required. His expertise is especially valuable in cases of suspected neurological conditions, back and joint pain, vascular disorders, as well as in the diagnosis of abdominal and pelvic diseases. The doctor also provides support in complex or unclear clinical situations, including the review of previously performed studies, which helps improve diagnostic accuracy and determine the optimal treatment strategy. A teleradiology format is available, allowing you to receive a professional opinion remotely.

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Frequently Asked Questions

Is a prescription required for ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS?
ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS?
The active ingredient in ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS is ketotifen. This information helps identify medicines with the same composition but different brand names.
How much does ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS cost in pharmacies?
The average pharmacy price for ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS is around 5.06 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS?
ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS is manufactured by Laboratoires Thea. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to ZADITEN 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS?
Other medicines with the same active substance (ketotifen) include BENTIFEN 0.25mg/ml EYE DROPS SOLUTION, KETISAL 0.25 mg/ml EYE DROPS SOLUTION, KETOBRILL 0.25 mg/ml EYE DROPS IN SINGLE-DOSE CONTAINERS. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
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