up to 12 hours eye itch relief works in minutes original prescription strength antihistamine eye drops ketotifen fumarate ophthalmic solution Brand: Zaditor Dimensions: height: 322 weight: 5 length: 125 width: 176 Features: Up to 12 hours eye itch relief works in minutes original prescription strength antihistamine eye drops ketotifen fumarate ophthalmic solution null null null null null null