Which of the following antihistamine can be used topically in allergic rhinitis?: (A) Terfenadine, (B) Azelastine, (C) Cetrizine, (D) Fexofenadine
Answer is B. Azelastine, Astemizole, Ketotifen, Olopatadine are the antihistaminics that can be used topically in allergic rhinitis and conjuctivitis.