Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
DDs (a) and FPD values (b) for the 50/250 and 50/500 μg S-F Easyhaler from the beginning through to the end of the inhaler lifespan. Data represent average value ± standard deviation. DD, delivered dose; FPD, fine particle dose; S-F, salmeterol–fluticasone propionate.
