what otc medications contain ketotifen
ZADITORÂ® (ketotifen fumarate) is a sterile ophthalmic solution containing ketotifen for topical administration to the eyes. Ketotifen fumarate is a finely crystalline powder with an empirical formula of C23H23NO5S and a molecular weight of 425.50. Established Name: Ketotifen Fumarate Ophthalmic Solution.