Zaditor Side Effects Center

What Is Zaditor?

Zaditor (ketotifen fumarate) Ophthalmic Solution is an antihistamine used to treat itching of the eyes caused by allergy to dust, pollen, animals, or other allergens. Zaditor is available in generic form.

What Are Side Effects of Zaditor?

Common side effects of Zaditor include:

• burning/stinging/irritation of the eye,
• eye dryness,
• headache,
• stuffy/runny nose,
• bad taste in your mouth, and
• increased sensitivity to light.

Tell your doctor if you have unlikely but serious side effects of Zaditor including:

• eye pain,
• increased redness or swelling of the eye, or
• vision problems.

Seek medical care or call 911 at once if you have the following serious side effects:

• Serious eye symptoms such as sudden vision loss, blurred vision, tunnel vision, eye pain or swelling, or seeing halos around lights;
• Serious heart symptoms such as fast, irregular, or pounding heartbeats; fluttering in your chest; shortness of breath; and sudden dizziness, lightheartedness, or passing out;
• Severe headache, confusion, slurred speech, arm or leg weakness, trouble walking, loss of coordination, feeling unsteady, very stiff muscles, high fever, profuse sweating, or tremors.

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

Dosage for Zaditor

The dose of Zaditor for adults and children 3 years of age and older: Put 1 drop in the affected eye(s) twice daily, every 8-12 hours, no more than twice per day.

What Drugs, Substances, or Supplements Interact with Zaditor?

Other drugs may interact with Zaditor ophthalmic. Tell your doctor about all the prescription and over-the-counter medications and supplements you use.

Zaditor During Pregnancy and Breastfeeding

During pregnancy, Zaditor should be used only when prescribed. It is not known whether this drug passes into breast milk. Consult your doctor before breastfeeding.

Additional Information

Our Zaditor (ketotifen fumarate) Ophthalmic Solution Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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

Stop using ketotifen ophthalmic and call your doctor at once if you have:

• 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.

Common 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. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.