Comparative Study of ELLIPTA Dry Powder Inhaler (DPI) Versus DISKUS DPI Used With HandiHaler DPI in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

ELLIPTA is a dry powder inhaler used via oral route. It will be a placebo DPI with two strips with 30 blisters per strip. First strip will contain lactose monohydrate and the second strip will contain lactose monohydrate blended with magnesium stearate.

DISKUS is a dry powder inhaler used via oral route. It will be a placebo DPI with one blister strip that will contain lactose monohydrate.

HandiHaler is a dry powder inhaler used via oral route. It will be a DPI with placebo capsules that will contain lactose monohydrate.

Preference questionnaires will be given to subjects to understand the inhaler preference. There will be 2 types of questionnaire, preference questionnaires 1 and 2, which will be randomized at visit 3 (Day 56).