Mixture of compounds, comprising 4 - [(S) -2-azetidin-1-yl-1- (4-chloro-3-trifluoromethyl-phenyl) -ethylamino] -quinazoline-8-carboxylic acid amide, or its salts physiologically acceptable, and a Her2 inhibitor, or its physiologically acceptable salts.Mezcla de compuestos, que comprende amida de ácido 4-[(S)-2-azetidin-1-il-1-(4-cloro-3-trifluorometil-fenil)-etilamino]-quinazolin-8-carboxílico, o sus sales fisiológicamente aceptables, y un inhibidor de Her2, o sus sales fisiológicamente aceptables.