Zaditor is a prescription medication that is used to treat itchy eyes caused by allergens including dust, pollen, and animal dander. Zaditor contains the antihistamine ketotifen and works by reducing the effects of the natural chemical histamine.

Always read the medication information and instructions before using this medication.
Always follow your doctor’s directions.

• Wash your hands before using. Remove contact lenses and wait at least 10 minutes before replacing them.
• Tip your head backward and use your finger to pull down your lower eyelid. Hold the eyedropper directly above the eye, look away and squeeze out a single drop. Keep your eyes closed for 2-3 minutes.
• Do not touch the tip of the eyedropper to prevent contamination.
• If you need to use more than one drop, wait five minutes between drops. Wait at least ten minutes before applying any other eye drops.
• Do not use Zaditor eye drops if the liquid has changed colors or if there are visible particles.

Make sure to tell your doctor:

• If you have any drug or other allergies.
• If you take any other prescription or over-the-counter medications.
• Your medical history, especially of previous eye irritations or eye infections.

Other information you should also know:

• Zaditor should not be used by anyone younger than three.

Common side effects of Zaditor:

• Mild eye irritation, stinging, or burning.
• Increased sensitivity to light.
• Dry eyes.

If you have any of the following ketotifen side effects, seek medical help:

• Eye pain.
• Vision changes.
• severe eye itching.
• Worsening of your condition.
• Signs of an infection such as eyelid swelling, eye redness, or eye drainage.
• Symptoms of an allergic reaction including difficulty breathing, hives, or swelling in your face, lips, or throat.

What should I do if I miss a dose of Zaditor?

If you miss a dose of Zaditor, you should take it as soon as you remember. However, if it is almost time for your next dose, then skip your missed dose.

What is the strength of Zaditor?

Zaditor is available with a strength of 0.025%.