[en] The Glauber approximation for an inelastic Coulomb scattering is first applied to the ionization process of hydrogenic ions by taking account of the asymptotic Coulomb interaction. The result of integrated ionization cross sections in the non-exchange approximation is compared with the corresponding Coulomb-Born result and it is shown that the glauber result is in reasonable agreement with experimental data. The reduced cross section in the limit of infinitely large nuclear charge is also evaluated for hydrogenic heavy ions from the general and practical point of view. (author)