The invention concerns a pharmaceutically stable oxaliplatinum preparation for parenteral administration, the oxaliplatinum being in a precipitate-free, colourless and clear solution after being preserved for a pharmaceutically acceptable duration. In said preparation, the oxiplatinum is contained in solution in a solvent at a concentration of at least 7 mg/ml and the solvent comprises a sufficient amount of at least a hydroxylated derivative selected among 1,2-propane-diol, glycerol, maltitol, saccharose and inositol. The invention also concerns a method for preparing said solution.
