Akorn, Inc. is a manufacturer and markets a full line of diagnostic and therapeutic ophthalmic pharmaceuticals, as well as niche hospital drugs and injectable pharmaceuticals. It operates in three segments: ophthalmic, hospital drugs & injectables, and contract services. It operates pharmaceutical manufacturing plants in the United States at Decatur, Illinois and Somerset, New Jersey, and internationally at Paonta Sahib, Himachal Pradesh, India, as well as a central distribution warehouse in Gurnee, Illinois, R&D centers in Skokie and Vernon Hills, Illinois and corporate offices in Lake Forest, Illinois. It�s customers include physicians, optometrists, hospitals, retail pharmacy chains and other pharmaceutical companies. In November 2013, it acquired from Merck, the United States rights to three branded ophthalmic products, such as AzaSite, COSOPT and COSOPT PF, including those product rights obtained through the acquisition of Inspire Pharmaceuticals, Inc., a subsidiary of Merck.