Helping people breathe easy and sleep properly are the core of Sunovion. The pharmaceutical company focuses its drug development efforts in two main therapeutic categories: respiratory and central nervous system (CNS) disorders. Among its marketed products are asthma drug Xopenex, insomnia therapy Lunesta, schizophrenia treatment Latuda, and Brovana, a chronic obstructive pulmonary disease (COPD) treatment. Sunovion markets its products to primary care physicians and some specialists in the US. Sunovion is a subsidiary of Japanese firm Dainippon Sumitomo Pharma (DSP).