Comparative Study on the effectiveness of Glycopyrrolate/Formoterol versus Tiotropium/Formoterol in patients with Chronic Obstructive Pulmonary Disease.

Background: Chronic Obstructive Pulmonary Disease (COPD) has several implications on health, lifestyle, and economic burden. Combinational therapy using muscarinic antagonists and beta- agonists has long been warranted for use as maintenance therapy. A lack of studies directly comparing Glycopyrrolate/Formoterol (GFF) versus Tiotropium/Formoterol (TFF) was observed which led us to analyze the effectiveness of these combinations.