A Single Centre Study in Healthy Volunteers to Optimise the Rotacap Formulation and ROTAHALER Device for Delivery of Fluticasone Propionate/Salmeterol

The study will be conducted in 3 parts with an adaptive design where pharmacokinetic data analysis follows each part to enable a decision on whether progression to the subsequent parts is required. Thirty six subjects will be enrolled in each part. Part A will test an alternative version of the Rotahaler with a lower airflow resistance. The study will then test one or more of the following options depending on the outcome of part A. If progressed, part B will test modified Rotacap formulations including: (1) modified blend formulation, (2) reduced capsule fill weights, (3) different capsule types. Part B will also test other versions of the Rotahaler with intermediate airflow resistance. Part C will test the lower strength FP/salmeterol (100/50 mcg or lower) and/or a new unit dose DPI device (BUDI). In each arm, subjects will be administered 7 doses (3.5 days bid) with PK sampling following administration of the 7th dose on the morning of Day 4.

The study will be conducted in 3 parts with an adaptive design where pharmacokinetic data analysis follows each part to enable a decision on whether progression to the subsequent parts is required. Thirty six subjects will be enrolled in each part. Part A will test an alternative version of the Rotahaler with a lower airflow resistance. The study will then test one or more of the following options depending on the outcome of part A. If progressed, part B will test modified Rotacap formulations including: (1) modified blend formulation, (2) reduced capsule fill weights, (3) different capsule types. Part B will also test other versions of the Rotahaler with intermediate airflow resistance. Part C will test the lower strength FP/salmeterol (100/50 mcg or lower) and/or a new unit dose DPI device (BUDI). In each arm, subjects will be administered 7 doses (3.5 days bid) with PK sampling following administration of the 7th dose on the morning of Day 4.