Wal-Zyr Itchy Eye

Ketotifen is an over-the-counter (OTC) eyedrop used to temporarily relieve itchy eyes due to pollen, ragweed, grass, animal hair and dander. Ketotifen belongs to a group of drugs called antihistamines. It works by blocking histamine receptors and decreasing the release of histamine from cells in the body.

Ketotifen comes as an eyedrop that is applied twice daily.

Side effects may include red eyes, runny nose and headache.

Ketotifen is a non-prescription eyedrop that temporarily relieves itchy eyes due to pollen, ragweed, grass, animal hair and dander.

• Adults and children 3 years of age and older: Put 1 drop in the affected eye(s) twice daily, every 8 to 12 hours, no more than twice per day.
• Children under 3 years of age: Consult a doctor.

Do not use

• if solution changes color or becomes cloudy
• if you are sensitive to any ingredient in this product
• to treat contact lens related irritation

Ketotifen eyedrop solution is generally well tolerated and side effects are usually mild. However, you should stop using it and ask a doctor if you experience any of the following:

• eye pain
• changes in vision
• redness of the eye
• itching worsens or lasts more than 72 hours

There are currently no known ketotifen drug interactions. 

Ketotifen should not be used in children younger than 3 years of age unless directed by a physician. 

Ketotifen products can sometimes cause discoloration of contact lenses. Remove contacts before using ketotifen -- allow at least 10 minutes before putting your contacts back in after using ketotifen.

Avoid touching your eye with the medication dropper used to apply ketotifen. This may put you at risk for an eye infection.