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Organization and Business	3 Months Ended
Organization and Business	Mar. 31, 2015
Organization and Business
Organization and Business	1. Organization and Business Supernus Pharmaceuticals, Inc. (the Company) is a specialty pharmaceutical company focused on developing and commercializing products for the treatment of central nervous system (CNS) diseases, including neurological and psychiatric disorders. The Company markets two epilepsy products, Oxtellar XR and Trokendi XR, and has several proprietary product candidates in clinical development that address the psychiatry market. The Company commenced the commercialization of Oxtellar XR and Trokendi XR in 2013.