... sold in as a salt of fumaric Acid, ketotifen fumarate, and is available in two forms. In its ... Claritin Eye. A generic version of Novartis' Zaditor, ketotifen fumarate ophthalmic solution, 0.025%, is available from Perrigo and ... . In South Korea 'Uniten-F Eye Drops (ketotifen fumarate 0.345mg/ml, 0.25mg as ketotifen)' which is ... also available from Unimed Pharmaceutical INC.[ ketotifen fumarate