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ZADITEN 0.25 mg/ml EYE DROPS

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Prescription review online

A doctor will review your case and decide whether a prescription is medically appropriate.

Talk to a doctor about this medicine

Talk to a doctor about this medicine

Discuss your symptoms and possible next steps in a quick online consultation.

Doctor
5.0(38)

Andrei Popov

General medicinePain medicine7 years of experience

Dr. Andrei Popov is a General Practitioner with specialized training in chronic pain. He provides online consultations for adult patients in Spain and other European countries.

Dr. Popov understands that seeking help with weight-related concerns or pain that has persisted for months can be difficult. Many patients come to him after trying different approaches without feeling truly heard. During the consultation, the doctor creates a comfortable and supportive, non-judgmental environment where the patient’s medical history can be discussed in detail, questions can be answered, and the next steps can be decided together.

Weight Management and Metabolic Health

Dr. Popov can help assess overweight, obesity, and related conditions such as hypertension, diabetes, or metabolic disorders. During the consultation, the patient’s medical history, test results, current medications, and previous treatments will be reviewed.

If you would like to learn about possible medication options or have already started treatment, the doctor can assess your situation, review the effectiveness and tolerability of the therapy, and clearly explain its benefits, potential risks, and alternatives.

Not every patient requires the same treatment. A consultation does not guarantee a prescription — it provides an objective medical assessment and a plan tailored to your individual situation.

Pain and General Medicine

You can also consult Dr. Popov regarding:

* chronic pain, migraines, neuralgia, and fibromyalgia;

* back, neck, lower back, or joint pain;

* hypertension, diabetes, and follow-up of chronic conditions;

* review of test results, medical reports, and current treatment;

* preventive medicine and a second medical opinion.

How the Consultation Works

The video consultation lasts up to 30 minutes. The doctor will listen carefully, review the information you provide, and explain the next steps in clear and understandable language.

If additional tests, an in-person consultation, or urgent medical care are required, the doctor will inform you directly.

Dr. Popov’s goal is to make sure the patient feels heard and leaves the consultation with a clear understanding of their condition and the next steps they can take.

Book a video appointment
€86
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

Contents of the leaflet

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

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.

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 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.

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 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/

Online doctors for ZADITEN 0.25 mg/ml EYE DROPS SOLUTION

Discuss questions about ZADITEN 0.25 mg/ml EYE DROPS SOLUTION, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

Doctor
5.0(38)

Andrei Popov

General medicinePain medicine7 years of experience

Dr. Andrei Popov is a General Practitioner with specialized training in chronic pain. He provides online consultations for adult patients in Spain and other European countries.

Dr. Popov understands that seeking help with weight-related concerns or pain that has persisted for months can be difficult. Many patients come to him after trying different approaches without feeling truly heard. During the consultation, the doctor creates a comfortable and supportive, non-judgmental environment where the patient’s medical history can be discussed in detail, questions can be answered, and the next steps can be decided together.

Weight Management and Metabolic Health

Dr. Popov can help assess overweight, obesity, and related conditions such as hypertension, diabetes, or metabolic disorders. During the consultation, the patient’s medical history, test results, current medications, and previous treatments will be reviewed.

If you would like to learn about possible medication options or have already started treatment, the doctor can assess your situation, review the effectiveness and tolerability of the therapy, and clearly explain its benefits, potential risks, and alternatives.

Not every patient requires the same treatment. A consultation does not guarantee a prescription — it provides an objective medical assessment and a plan tailored to your individual situation.

Pain and General Medicine

You can also consult Dr. Popov regarding:

* chronic pain, migraines, neuralgia, and fibromyalgia;

* back, neck, lower back, or joint pain;

* hypertension, diabetes, and follow-up of chronic conditions;

* review of test results, medical reports, and current treatment;

* preventive medicine and a second medical opinion.

How the Consultation Works

The video consultation lasts up to 30 minutes. The doctor will listen carefully, review the information you provide, and explain the next steps in clear and understandable language.

If additional tests, an in-person consultation, or urgent medical care are required, the doctor will inform you directly.

Dr. Popov’s goal is to make sure the patient feels heard and leaves the consultation with a clear understanding of their condition and the next steps they can take.

Book a video appointment
€86
Doctor
5.0(12)

Yevgen Yakovenko

General medicine12 years of experience

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:

  • Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
  • Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
  • Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
  • Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
  • Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
  • Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
  • Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
  • Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

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).
  • Certified in radiological diagnostics and robotic surgery.
  • Active participant in international medical conferences and research.

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.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

Book a video appointment
€72
Doctor
5.0(3)

Lina Travkina

General medicine13 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.

Book a video appointment
€75
Doctor
5.0(21)

Nuno Tavares Lopes

General 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.

Book a video appointment
€70
Doctor
0.0(0)

Hocine Lokchiri

General medicine21 years of experience

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.

Online consultations with Dr. Lokchiri are suitable for many situations when someone needs quick medical guidance, reassurance or a clear next step. Common reasons for booking include:

  • fever, chills, fatigue and viral symptoms
  • cough, sore throat, nasal congestion, breathing discomfort
  • bronchitis and mild asthma flare-ups
  • nausea, diarrhoea, abdominal pain, digestive infections
  • rashes, allergic reactions, redness, insect bites
  • muscle or joint pain, mild injuries, sprains
  • headache, dizziness, migraine symptoms
  • stress-related symptoms, sleep disturbances
  • questions about test results and treatment plans
  • management of chronic conditions in stable phases
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.

Some situations are not suitable for online care. If a patient has loss of consciousness, severe chest pain, uncontrolled bleeding, seizures, major trauma or symptoms suggesting a stroke or heart attack, he will advise seeking immediate local emergency services. This improves safety and ensures patients receive the right level of care.

Dr. Lokchiri’s professional training includes:

  • Advanced Trauma Life Support (ATLS)
  • Basic and Advanced Cardiac Life Support (BLS/ACLS)
  • Pediatric Advanced Life Support (PALS)
  • Prehospital Trauma Life Support (PHTLS)
  • eFAST and critical care transthoracic echocardiography
  • aviation medicine
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.
Book a video appointment
€64

Get ZADITEN 0.25 mg/ml EYE DROPS SOLUTION Prescription Online

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Electronic prescription sent to your email — valid across Spain.

Frequently Asked Questions

ZADITEN 0.25 mg/ml EYE DROPS SOLUTION requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.

The active ingredient in ZADITEN 0.25 mg/ml EYE DROPS SOLUTION is ketotifen. This information helps identify medicines with the same composition but different brand names.

ZADITEN 0.25 mg/ml EYE DROPS SOLUTION is manufactured by Laboratoires Thea. Pharmacy brands and packaging may differ depending on the distributor.

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 SOLUTION is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.

Spain has a well-developed healthcare infrastructure across major cities such as Madrid, Barcelona, Valencia, and Seville. Pharmacies are widely available and operate under strict regulations, ensuring access to prescribed medications.

You can buy ZADITEN 0.25 mg/ml EYE DROPS SOLUTION in Madrid, Barcelona, Seville, or Valencia at any local pharmacy with a valid prescription.

To obtain a prescription, you can use Oladoctor:

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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