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Organization and Business	3 Months Ended
Organization and Business	Mar. 31, 2017
Organization and Business
Organization and Business	1. Organization and Business Supernus Pharmaceuticals, Inc. (the Company) was incorporated in Delaware and commenced operations in 2005. 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 products, Oxtellar XR for the treatment of epilepsy and Trokendi XR for the treatment of migraine and epilepsy, and has several proprietary product candidates in clinical development that address the psychiatry market. The Company commercialized Oxtellar XR and Trokendi XR in 2013. The Company launched Trokendi XR for the treatment of migraine in April 2017.