The invention relates to a medicinal product comprising at least one substrate having a coating, said coating comprising a functional layer on top of the substrate and said functional layer comprising at least one sugar alcohol and being directly or indirectly bonded to the substrate via a functionalization of the sugar alcohol. Alternatively, the functional layer can also comprise other saccharides, however, it is essential that the saccharides are polymerized only once the functional layer is bonded to the substrate. The medicinal product according to the invention has a reduced platelet adhesion and aggregation.
