The purpose of the study is to compare the safety and effectiveness of two different inhaled study drug combinations. To qualify, you must:

· Be at least 40 years old

· Have had COPD for at least 12 months with current symptoms. 

Be a current or ex-smoker.

· Be taking a daily inhaled maintenance therapy for your COPD.

Qualified participants may receive: ·

Study medication at no cost.

· Compensation for each study visit completed.

· An opportunity to learn more about COPD and future options for COPD sufferers