A water-based pharmaceutical preparation incorporates an active ingredient that is effective against the receptor of an endothelial growth factor (EGF-receptor), which is Cetuximab or EMD 72000, or one of their respective murines, humanised or chimara antibody analogs. The preparation further incorporates a buffer, an amino-acid and a tenside. ACTIVITY : Cytostatic. MECHANISM OF ACTION : EGF receptor antagonist.