KemPharm, Inc. announced that the U.S. Food and Drug Administration (FDA) has granted a fee waiver and has refunded the full user fee amount of $2,374,200 for its New Drug Application (NDA) filing for KP201/APAP, the Company’s investigational immediate release combination of its hydrocodone prodrug, KP201 (benzhydrocodone hydrochloride), and acetaminophen (APAP), which is currently under priority review by the FDA. The FDA has set a target action date under the Prescription Drug User Fee Act of June 9, 2016.

