Duaklir Pressair is a prescription inhaler that can be used to treatchronic obstructive pulmonary disease (COPD). COPD is a group of diseases that includes emphysema and chronic bronchitis. For people with COPD, the airways of their lungs become hardened and inflamed. It becomes more difficult to breathe because oxygen does not pass as easily into the lungs. Duaklir Pressair contains two different medications that help relax the airways of the lungs and make it easier to breathe.