Extended release formu Mean DPOC-4088 plasma concentrations following single oral doses lations of 3-fluoro-2-pyridylmethyl-3- of an immediate release ( I ) formulation in healthy young men (2,2-difluoro -2-(2- pyridyl)ethylamino) - 6-chloropyrazin-2-one-l-acetamide (DPOC-4088) that provide for better control of blood plasma levels. The ex tended release formulations maintain substantially constant plasma levels of -t the active ingredient for at least about 16 hours and provide for once-daily dosing.