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ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

Ask a doctor about a prescription for ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

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Tarek Agami

General medicine11 years of experience

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

Main areas of consultation:

  • Diagnosis and treatment of acute and chronic conditions (high blood pressure, diabetes, respiratory infections, cardiovascular symptoms)
  • Evaluation of symptoms and guidance on further diagnostic testing
  • Preventive check-ups and regular health monitoring
  • Medical support during travel or after relocation
  • Treatment adjustments and lifestyle recommendations based on your personal history
Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

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Nuno Tavares Lopes

Family medicine18 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.

  • 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. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

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.

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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 ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

Introduction

Package Leaflet: Information for the User

Zaditen 0.25mg/ml eye drops solution

Ketotifen

Read all of this leaflet carefully before you start using this medicine because it contains important information for you.,Keep this leaflet. You may need to read it again.

  • Keep this leaflet, as you may need to read it again.
  • If you have any further questions, ask your doctor, pharmacist, or nurse.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours.

If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the pack:

  1. What Zaditen is and what it is used for
  2. What you need to know before you use Zaditen
  3. How to use Zaditen
  4. Possible side effects
  5. Storage of Zaditen
  6. Contents of the pack and other information

1. What Zaditen is and what it is 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.

2. What you need to know before you use Zaditen

Do not use Zaditen

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

Warnings and precautions

Talk to your doctor, pharmacist, or nurse before you start using Zaditen.

Using Zaditen with other medicines

If you need to apply any other eye medicine besides Zaditen, wait at least 5 minutes between applying each product.

Tell your doctor or pharmacist if you are using, have recently used, or might use any other medicines. This is especially important with 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 or breastfeeding, 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 gone.

Zaditen contains benzalkonium chloride.

This medicine contains 2.6 micrograms of benzalkonium chloride in each drop.

Benzalkonium chloride may be absorbed by soft contact lenses and may alter the color of the contact lenses. Remove contact lenses before using this medicine and wait 15 minutes before putting them back.

Benzalkonium chloride may cause eye irritation, especially if you have dry eyes or other corneal diseases (the transparent layer on the front of the eye). Talk to your doctor if you feel any unusual sensation, itching, or pain in the eye after using this medicine.

3. How to use Zaditen

Follow exactly the administration instructions of this medicine given by your doctor or pharmacist. If you are unsure, consult your doctor or pharmacist again if you have any doubts.

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

Instructions for use

  1. Wash your hands.
  2. Open the bottle. Do not touch the tip of the dropper after opening the bottle.
  3. Tilt your head back (Fig. 1).
  4. Pull the lower eyelid down with your finger and hold the bottle with the other hand. Squeeze the bottle so that one drop falls into the eye (Fig. 2).
  5. Close your eyes and press the inner corner of the eye with the tip of one finger for 1-2 minutes. This prevents the drop from flowing down the tear duct to the throat, and most of the drop will remain in the eye (Fig. 3). If necessary, repeat steps 3 to 5 with the other eye.
  6. Close the bottle after use.

Head profile showing injection point, hand holding applicator device, and face with closed eyes during application

Fig. 1 Fig. 2 Fig. 3

If you have any further questions on 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. If in doubt, consult your doctor. Also, in case of overdose or accidental ingestion, you can consult the Toxicology 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, go back to your regular treatment schedule.

Do not take a double dose to make up for forgotten doses.

4. Possible side effects

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

The following side effects have been reported.

Common(affects less than 1 in 10patients)

  • eye irritation or eye pain
  • eye inflammation

Uncommon(affects less than1 in 100 patients)

  • 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 of side effects

If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects 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 out of the sight and reach of children.

Do not store above 25°C.

The bottle itself is not sterile, but its contents are sterile until the bottle is opened.

After the first opening of the bottle, the eye drops can only be stored for 4 weeks.

Do not use this medicine after the expiry date which is stated on the carton after EXP. The expiry date is the last day of the month shown.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.

6. Contents of the pack and other 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), water for injections, and benzalkonium chloride.

Appearance and pack contents

Zaditen is a clear, colorless to pale yellow solution. The solution is presented in a pack containing a 5 ml bottle.

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.

Local representative

Laboratorios THEA S.A. – Pg. Sant Joan 91, 08009 Barcelona

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

Austria Zaditen 0,025% - Augentropfen

Denmark Zaditen

Finland Zaditen 0,25 mg/ml silmätipat, liuos

France Zalergonium, 0,25 mg/ml, collyre en solution

Germany Zaditen ophtha 0,25 mg/ml Augentropfen

Greece Zaditor οφθαλμικές σταγόνες

Iceland Zaditen

Ireland Zaditen 0.25mg/ml, eye drops, solution

Luxembourg Zaditen 0,25 mg/ml, collyre en solution

Norway Zaditen

Portugal Zaditen 0,25 mg/ml colírio, solução

Spain Zaditen 0,25 mg/ml colirio en solución

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

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

United Kingdom Zaditen 0.25 mg/ml, eye drops, solution

Date of last revision of this leaflet:10/2020

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/

Alternatives to ZADITEN 0.25 mg/ml EYE DROPS SOLUTION in other countries

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

Alternative to ZADITEN 0.25 mg/ml EYE DROPS SOLUTION in Polonia

Dosage form: Gotas, 0.25 mg/ml
Active substance: ketotifen
Importer: Pharma Stulln GmbH
Prescription required
Dosage form: Gotas, 0.25 mg/ml
Active substance: ketotifen
Marketing authorisation holder (MAH): Laboratoires Thea
Prescription not required
Dosage form: Gotas, 0.25 mg/ml
Active substance: ketotifen
Marketing authorisation holder (MAH): Laboratoires THEA, 12, rue Louis Blériot
Prescription not required
Dosage form: Gotas, 0.25 mg/ml
Active substance: ketotifen
Marketing authorisation holder (MAH): Laboratoires Thea
Prescription not required
Dosage form: Gotas, 0.25 mg/ml
Active substance: ketotifen

Alternative to ZADITEN 0.25 mg/ml EYE DROPS SOLUTION in Ucrania

Dosage form: gotas, 0,25 mg/ml, 0,4 ml en un frasco gotero
Active substance: ketotifen
Manufacturer: Farma Stul'n GmbH
Prescription required
Dosage form: gotas, 0,25 mg/ml en un frasco de 5 ml
Active substance: ketotifen

Online doctors for ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

Discuss dosage, side effects, interactions, contraindications, and prescription renewal for ZADITEN 0.25 mg/ml EYE DROPS SOLUTION – subject to medical assessment and local rules.

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Tarek Agami

General medicine11 years of experience

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

Main areas of consultation:

  • Diagnosis and treatment of acute and chronic conditions (high blood pressure, diabetes, respiratory infections, cardiovascular symptoms)
  • Evaluation of symptoms and guidance on further diagnostic testing
  • Preventive check-ups and regular health monitoring
  • Medical support during travel or after relocation
  • Treatment adjustments and lifestyle recommendations based on your personal history
Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

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  • 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. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

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.

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

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Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults.

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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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