Asthma is an inflammatory disorder of the airways that causes attacks of wheezing, shortness of breath, chest tightness, and coughing. It affects nearly 26 million people in the United States, seven million of which are children. Asthma is a significant contributor to health care costs, responsible for 8.9 million office visits and 1.9 million asthma related emergency department visits. In 2013 alone, over $9.5 billion worth of asthma products were sold in the United States. The treatment of bronchospasm – the rescue portion of the asthma market – through the use of albuterol resulted in 50.4 million prescriptions of albuterol dispensed in 2013 according to IMS Health.