Supernus Pharmaceuticals, Inc., a pharmaceutical company, focuses on the development and commercialization of products for the treatment of central nervous system diseases in neurology and psychiatry in the United States. The company offers Oxtellar XR, an extended release oxcarbazepine for the monotherapy treatment of partial onset epilepsy seizures in adults and in children 6 to 17 years of age; and Trokendi XR, an extended release topiramate, which is used for the prophylaxis of migraine headache, as well as for the treatment of epilepsy. Its product candidates comprise SPN-812, a viloxazine hydrochloride, which has completed phase III clinical trial that is used for the treatment of attention deficit hyperactivity disorder (ADHD); SPN-809, a viloxazine hydrochloride, which is in phase II ready clinical trial for the treatment of depression; SPN-604 extended release oxcarbazepine, which is in phase III clinical trial for the treatment of bipolar disorder; and SPN-817 that is in phase I clinical trial to treat severe pediatric epilepsy disorders. The company markets its products through pharmaceutical wholesalers and distributors. It has a development and option agreement with Navitor Pharmaceuticals, Inc. to conduct a phase II clinical program for NV-5138 in treatment-resistant depression. Supernus Pharmaceuticals, Inc. was founded in 2005 and is headquartered in Rockville, Maryland.