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Zaditor Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
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. 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.
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. Other drugs may interact with Zaditor ophthalmic. Tell your doctor about all the prescription and over-the-counter medications and supplements you use. During pregnancy, Zaditor should be used only when prescribed. It is not known whether this drug passes into breast milk. Consult your doctor before breast-feeding.
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.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Zaditor in Detail - Patient Information: 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. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Zaditor (Ketotifen Fumarate)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Zaditor Overview - Patient Information: Side Effects
If your doctor has directed you to use this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: dry eyes, eye pain, increased redness/swelling of the eye, vision problems.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Zaditor (Ketotifen Fumarate)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Zaditor FDA Prescribing Information: Side Effects
In controlled clinical studies, conjunctival injection, headaches, and rhinitis were reported at an incidence of 10 to 25%. The occurrence of these side effects was generally mild. Some of these events were similar to the underlying ocular disease being studied.
The following ocular and non-ocular adverse reactions were reported at an incidence of less than 5%:
Non-Ocular: Flu syndrome, pharyngitis.
Read the entire FDA prescribing information for Zaditor (Ketotifen Fumarate)
Additional Zaditor Information
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