<unk>  is an antihistamine that is FDA approved for the treatment of seasonal allergic rhinitis, perennial allergic rhinitis and chronic idiopathic urticaria.   Common adverse reactions include pharyngitis, dry mouth, myalgia, fatigue, somnolence and dysmenorrhea.
Desloratadine
Loratadine
Rupatadine
Olopatadine 
Tromantadine
Azatadine
Tiratricol
Terfenadine