The invention concerns a mixture or a composition, that is preferably therapeutically active by topical administration, comprising: —at least one metal salt, the metal being chosen from molybdenum (Mo), tungsten (V), vanadium (V), gold (Au), a lanthanide, in particular lanthanum; —at least one chelating agent; —at least one source of peroxidative radicals; —at least one buffer agent; and pharmaceutical compositions constituted by or comprising said mixture, the methods for producing same and applications thereof, in particular in a method for the therapeutic treatment of a viral infection, and in particular involving a virus of the Herpesviridae family; or as an anti-inflammatory.