Prescription or OTCLower-cost generic available


(Ketotifen Fumarate)

  • Eye drops
  • Allergic conjunctivitis
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Soothes itchy eyes.

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Prescription or OTCLower-cost generic available

Our bottom line

Zaditor (Ketotifen Fumarate) is strong medicine for itchy eyes and doesn't expose the rest of your body to the medicine.


  • Works fast to relieve itchy eyes caused by allergies.
  • Most people don't have many side effects since it works in your eyes and doesn't affect the rest of your body.
  • It's available over the counter in the drugstore.


  • Doesn't treat for other types of allergy symptoms.
  • You need to have good hand-eye coordination to get the eye drops into your eyes.

Save on your next Zaditor (Ketotifen Fumarate) prescription

Get the lowest price for your medication, even if you have insurance.

  • (1) 5ml of 0.025% eye dropper
  • Cost for (1) 5ml of 0.025% eye dropper of Zaditor (Ketotifen Fumarate) at pharmacies

What to expect when you take Zaditor (Ketotifen Fumarate)

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Tips from our pharmacists
  • Use it only for eye allergy symptoms and not for eye infections.
  • If you wear contact lenses, take lenses out before using the eye drops. Wait at least 10 minutes after using Zaditor (Ketotifen Fumarate) before putting the lenses back in.
  • If you have other eye drops, wait at least 5 minutes between different drops.
  • Can cause temporary burning or stinging.
  • Let your doctor know if your eye symptoms gets worse or don't improve after 3 days.
  • Check with the pharmacist to learn the best techniques for using eye drops.
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Side effects for Zaditor (Ketotifen Fumarate)

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These are side effects of Zaditor (Ketotifen Fumarate) reported to the FDA by people taking it, and by doctors and pharmacists.

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Tips from pharmacists and people taking Zaditor (Ketotifen Fumarate)

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The FDA category for this medication is C. It is advised that you: Weigh risks vs. benefits