Refers to a Pharmaceutical composition comprising the compound 4 - methyl - 3 - [[4 - (3-pyridinyl) - 2 - pirimidinil] - amino] - N - [5 - (4 - methyl - 1H imidazol-1-yl) - 3 - (trifluoro methyl) phenyl] - benzamide or a pharmaceutically acceptable Salt thereof, and an organic Acid selected from acetic acid, prop Ionic, Malic acid, Citric Acid, Maleic acid,Among others it also contains a Surfactant or Anionic Polymer. Said composition is in the form of Tablets and CapsulesSE REFIERE A UNA COMPOSICION FARMACEUTICA QUE COMPRENDE EL COMPUESTO 4-METIL-3-[[4-(3-PIRIDINIL)-2-PIRIMIDINIL]-AMINO]-N-[5-(4-METIL-1H-IMIDAZOL-1-IL)-3-(TRIFLUORO-METIL)-FENIL]-BENZAMIDA O UNA SAL FARMACEUTICAMENTE ACEPTABLE DE LA MISMA Y UN ACIDO ORGANICO SELECCIONADO DE ACIDO ACETICO, ACIDO PROPIONICO, ACIDO MALICO, ACIDO CITRICO, ACIDO MALEICO, ENTRE OTROS ADEMAS CONTIENE UN TENSIOACTIVO O UN POLIMERO ANIONICO. DICHA COMPOSICION ESTA EN FORMA DE TABLETAS Y CAPSULAS