... Acid, ketotifen fumarate, and is available in two forms. In its ophthalmic form, it is used to treat allergic conjunctivitis, ... Novartis' Zaditor, ketotifen fumarate ophthalmic solution, 0.025%, is available from Perrigo and distributed as store brands. In South Korea ... as ketotifen)' which is a generic version of Zaditor and is selling as Over-The-Counter is also available from Unimed Pharmaceutical ...