An Open Label, Randomised, Six-way Crossover, Single Dose Study to Determine the Pharmacokinetics of GSK961081 and Fluticasone Furoate When Administered Alone or in Combination

GSK961081 is a novel bifunctional molecule that combines muscarinic antagonism and beta2-agonism in a single molecule and is in development for the treatment of chronic obstructive pulmonary disease (COPD). This is a randomised, open-label, six-way crossover, single dose study. This study evaluates the drug delivery and systemic pharmacokinetics of GSK961081 following concurrent administration of GSK961081 and fluticasone furoate via dry powder inhaler (DPI) in comparison to GSK961081 DISKUS. There will be six treatment periods and 7 days washout period in the study. Subjects will attend the unit in the morning for dosing and will be resident until 12 hours post administration. All subjects will receive six treatments.