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Ketotifen Summary

Ketotifen, available under the brand Zaditor to name a few, is a first-generation noncompetitive antihistamine and mast cell regulator. This medicine is frequently recommended to be used for the treatment of symptoms connected to allergies i.e. eyes that itchy, watery eyes, and eyes that burn after contact with dust, mold, pollen, dander, and other allergens. You must use Zaditor exactly as written on the label, or as recommended by your medical professional. Do not use in bigger or smaller quantities or for longer than advised. Common side effects consist of sleepiness, dry mouth, weight gain, irritability, and increased nosebleeds.

Ketotifen Purchase

When you get ready to buy Zaditor, you must discuss this with a doctor. Any self-medication along with unsuitable medication can hurt you seriously.


Product Information

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Ketotifen is an antihistamine that inhibits the body's release of a chemical called histamine. Histamine can produce allergy symptoms such as sneezing, runny nose, and watery eyes.

Ketotifen ophthalmic is used to treat itching of the eyes caused by allergy to dust, pollen, animals, or other allergens.

How to take

Use this medication exactly as directed on the label, or as it has been prescribed by your doctor.

Side effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using ketotifen ophthalmic and call your doctor at once if you have any of these serious side effects:

  • redness, drainage, eyelid swelling, or other signs of infection;
  • eye pain;
  • vision changes; or
  • severe itching of the eyes worse than before using the medication.

Less serious side effects may include:

  • mild burning, stinging, or eye irritation;
  • dryness of the eyes; or
  • increased sensitivity to light.

This is not a complete list of side effects and others may occur.


Do not use this medication if you are allergic to Ketotifen, or if you have an untreated eye infection. Ketotifen should not be used to treat eye irritation caused by wearing contact lenses.

Avoid using other medications in your eyes during treatment with Ketotifen unless your doctor has told you to.

Drug interactions

There may be other drugs that can interact with ketotifen ophthalmic. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Missed dose

Use the medication as soon as you remember the missed dose. If it is almost time for your next dose, skip the missed dose and use the medicine at your next regularly scheduled time. Do not use extra medicine to make up the missed dose.


Store at room temperature away from heat and moisture.


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