Fluticasone is a potent synthetic corticosteroid often prescribed as treatment for asthma and allergic rhinitis. The related fluticasone propionate is marketed with the brand names Flixotide for asthma and Flixonase for allergic rhinitis by Allen & Hanburys. In the US, it is marketed for asthma as Flovent, and allergic rhinitis as Flonase, by GlaxoSmithKline. GlaxoSmithKline also markets a combination of fluticasone and salmeterol as Advair or Seretide . The related...