This is a combination drug that isused to cure chronic obstructive pulmonary disease. This powdered medicationfunctions by stopping the release of chemical messengers that can causeswelling of the airways to improve breathing. It is available in finemoisture-free powdered form which makes it easier to inhale it. It may causeside effects such as throat inflammation, headache, upper respiratory tractinfection, stomach discomfort, tremors, and voice change.