Microgranules obtained by extrusion-spheronisation, containing a cyclodextrine

Microgranules obtained by extrusion-spheronisation, including at least one cyclodextrin as excipient. Process for the preparation of these microgranules by extrusion-spheronisation and the use of a cyclodextrin as excipient for the manufacture of microgranules by extrusion-spheronisation, these microgranules permitting the controlled release of pharmaceutical, veterinary or agrochemical active principles.