SAN DIEGO--(BUSINESS WIRE)--Somaxon Pharmaceuticals, Inc. (Nasdaq: SOMX), a specialty pharmaceutical company focused on the in-licensing, development and commercialization of proprietary branded pharmaceutical products and late-stage product candidates for the treatment of diseases and disorders in the central nervous system therapeutic area, today announced that the website of the U.S. Food and Drug Administration (FDA) indicates that an Abbreviated New Drug Application (ANDA) for a generic version of Silenor® (doxepin) 3 mg and 6 mg was submitted on September 16, 2010. Somaxon has not received a Paragraph IV certification with respect to this ANDA filing.