PHARMACEUTICAL FORMULATION OF INDEPENDENT SUSTAINED LIBERATION OF THE IONIC FORCE.

摘要

1. A pharmaceutical formulation of a hydrophilic gel forming matrix comprising one or more active substances and having a prolonged release of said one or more active substances after exposure to gastrointestinal fluids, characterized in that said pharmaceutical formulation comprises hydroxypropyl methylcellulose (HPMC ) of high or medium viscosity and a hydroxyethylcellulose (HEC) of high or medium viscosity, in a ratio HPMC / HEC = 1/0, 85 ¿1/1, 2 and optionally a HPMC of low viscosity in a ratio HPMC of high viscosity or medium / low viscosity HPMC = 1/0, 01 ¿1/0, 2.