Use as medicine of a compound restoring active principles in vivo

A method for delivering at least an active principal A to a human or animal, by administering, in vivo, an active compound of general formula A'V'C', that is capable of restoring at least the entity A by cleavage, in vivo, of the corresponding attachments between A' and V', wherein V is a biogenic vectorization compound of general formula X-R-Y, where R represents an aliphatic, cyclic or alicyclic, saturated or unsaturated hydrocarbon chain of 2 to 10 carbon atoms, and X and Y are each a free acid, amine or alcohol function; and A and C are two respectively different active principles, one of which has a chemical function complementary to the function of X, capable of reacting with the latter to give an ionic A' - - - V' or covalent A'-V' attachment that can be cleaved in vivo, and the other of which has a chemical function complementary to the function of Y, capable of reacting with the latter to give an ionic V' - - - C' or covalent V'-C' attachment.