Question: what is the difference between flonase and astelin?
Answer: Compared with intranasal corticosteroids, azelastine nasal spray has a faster onset of action and a better safety profile, showing at least comparable efficacy with fluticasone propionate (Flonase®; GSK, USA), and a superior efficacy to mometasone furoate (Nasonex®; Schering Plough, USA).