Refers to an oral Pharmaceutical composition comprising (a) an inhibitor of protein kinase that is 3 - (2,6 - Dichloro - 35 - dimethoxy phenyl) - 1 - (6 - [4 - (ethyl - piperazin-1-yl) - phenylamino] pyrimidin-4-yl) - 1 - Methyl urea or a pharmaceutically acceptable Salt thereof as the anhydrous monopotassium salt (b) one or more Binders such as hydroxypropyl Methyl Cellulose and (c) one or more disintegrating as polyvinylpyrrolidone Crisscross. Also refers to a process of Development.Said composition is useful in the treatment of proliferative Diseases mediated by Protein KinasesSE REFIERE A UNA COMPOSICION FARMACEUTICA ORAL QUE COMPRENDE A) UN INHIBIDOR DE LA PROTEINA QUINASA QUE ES 3-(2,6-DICLORO-3,5-DIMETOXI-FENIL)-1-{6-[4-(4-ETIL-PIPERAZIN-1-IL)-FENILAMINO]-PIRIMIDIN-4-IL}-1-METIL-UREA O UNA SAL FARMACEUTICAMENTE ACEPTABLE DEL MISMO TAL COMO LA SAL MONOFOSFATO ANHIDRO B) UNO O MAS AGLUTINANTES TAL COMO HIDROXIPROPILMETILCELULOSA Y C) UNO O MAS DESINTEGRANTES TAL COMO POLIVINILPIRROLIDONA ENTRECRUZADA. TAMBIEN SE REFIERE A UN PROCESO DE ELABORACION. DICHA COMPOSICION ES UTIL EN EL TRATAMIENTO DE ENFERMEDADES PROLIFERATIVAS MEDIADAS POR PROTEINAS QUINASAS