Zaditor
SYSTANE® ZADITOR® Antihistamine Eye Drops are prescription-strength eye drops for temporary relief of itchy eyes due to allergens.
Last updated September 11, 2026
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Overview
SYSTANE® ZADITOR® Antihistamine Eye Drops are described on the Systane US site as the original triple-action, prescription-strength formula that works in minutes to deliver up to 12 hours of allergy eye itch relief. The product is indicated to temporarily relieve itchy eyes due to pollen, ragweed, grass, animal hair and dander, and its active ingredient is ketotifen (0.025%), an antihistamine (equivalent to ketotifen fumarate 0.035%). It is available in 10mL and is intended for ages 3 and up.
Products and positioning
Prescription-strength, triple-action antihistamine eye drop for allergy eye itch relief.
SYSTANE® ZADITOR® Antihistamine Eye Drops
Prescription-strength antihistamine eye drops that work in minutes to deliver up to 12 hours of allergy eye itch relief; active ingredient ketotifen (0.025%); available in 10mL; for ages 3 and up.
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