It refers to the long-term action drug composition of parents, including a hepatitis C virus (VHC) inhibitor made of 6 - (n - (7-chloro-1-hydroxy-1,3-dihydrophenyl ether) [C] [1) formula benzofuran derivatives. (2) oxaborol-5-il) methylsulfuryl-5-cycloacrylonitrile-2 - (4-fluorophenyl) - n-methylbenzophenol-3-carboxamida (formula 1). The ingredient also includes a surfactant system, including surfactants such as polyurethane 80, a stabilizer, such as polyethylene glycol, and a painkiller, such as acetic acid. These formulas are used to treat hepatitis C and are suitable for taking once a month, every two months and every three months,Every six or 12 months, it helps the patient to receive treatment and make the patient more comfortable.Se refiere a una composicion farmaceutica parenteral de accion prolongada (LAP) que comprende un agentes antivirico inhibidor del virus de la hepatitis C (VHC) derivado de benzofurano de formula 6-(N-(7-cloro-1-hidroxi-1,3-dihidrobenzo[c][1,2]oxaborol-5-il)metilsulfonamido)-5-ciclopropil-2-(4-fluorofenil)-N-metilbenxofuran-3-carboxamida (Formula I). Dicha composicion tambien comprende un sistema tensioactivo que comprende un tensioactivo tal como polisorbato 80, un estabilizador tal como polietilenglicol, una sal tamponadora tal como acetato. Estas formulaciones se emplean en el tratamiento de la hepatitis C y son adecuadas para administrarse una vez al mes, cada 2 meses, cada 3 meses, cada 6 meses o cada 12 meses, lo cual favorece el cumplimiento del tratamiento y el aumento de comodidad del paciente