Umeclidinium is a long acting muscarinic antagonist (LAMA) authorized for symptom relief in patients with Chronic Obstructive Pulmonary Disease (COPD).
They are no comparative data available with tiotropium, or with other LAMA or LABA.
It has not shown to reduce the number of exacerbations. Neither does it improve quality of life or reduce the need for rescue treatment in studies lasting more than 12 weeks.
There is concern on safety regarding its cardiovascular profile and the possible higher risk of pneumonia.