KemPharm Announces U.S. Launch of Innovative ADHD Treatment AZSTARYS (serdexmethylphenidate and dexmethylphenidate capsules) by Corium, Inc. CELEBRATION, Fla., July 21, 2021 (GLOBE NEWSWIRE) -- KemPharm, Inc. (NASDAQ: KMPH), a specialty pharmaceutical company engaged in the discovery and development of proprietary prodrugs, today announced the U.S. commercial launch of AZSTARYS, a once-daily product for the treatment of attention deficit hyperactivity disorder (ADHD) in patients age six years and older. Corium, Inc. (Corium), a portfolio company of Gurnet Point Capital (GPC), is leading the commercialization of AZSTARYS in the U.S.