Placebo MDI HFA to match BGF MDI HFA clinical trials

A Randomised, Placebo-Controlled, Double-Blind, Multi-Centre, 4-week, 3-way Crossover Pharmacodynamic Study to Assess the Equivalence of Budesonide, Glycopyrronium, and Formoterol Fumarate (BGF) Delivered by MDI HFO Compared with BGF Delivered by MDI HFA in Participants with Chronic Obstructive Pulmonary Disease

This study is testing different versions of an inhaler treatment for moderate to severe COPD. It wants to see if a new design works as well as the current one, and if both are better than using a dummy inhaler. We're looking at how well people can breathe.