1-(2-Ethoxyethyl)-2-(4-methylhexahydro-1H-1,4-diazepin-1-yl)benzimidazole fumarate (1:2)
Emedastine difumarate is the fumaric acid salt of emedastine containing two molecules of fumaric acid for each molecule of emedastine. A relatively selective histamine H1 antagonist, it is used for allergic rhinitis, urticaria, and pruritic skin disorders, and in eyedrops for the symptomatic relief of allergic conjuntivitis. It has a role as a H1-receptor antagonist, an anti-allergic agent and an antipruritic drug. It contains an emedastine.