Pharmacokinetics and Bioequivalence of 2 Products of Fluticasone Propionate Nasal Spray in Healthy Chinese Subjects

Fluticasone propionate nasal spray is widely regarded as a first-line therapy for allergic rhinitis. To establish bioequivalence between the test and reference products of fluticasone propionate nasal spray, an open-label, randomized, single-dose, and 2-sequence crossover study was conducted on 84 healthy Chinese subjects under fasting conditions to determine the pharmacokinetic bioequivalence of the 2 products. Following a single-dose administration (200 µg) of fluticasone propionate nasal spray, pharmacokinetic parameters, including maximum plasma concentration, area under the concentration–time curve from administration to the last measurable concentration, and area under the concentration–time curve from administration to infinity, exhibited similarity between the 2 products, with 90% confidence intervals for the test/reference ratios falling within the bioequivalence range of 80%-125%.