L'invention concerne un comprim? matriciel pour la lib?ration prolong?e de gliclazide qui assure une lib?ration continue et r?guli?re du principe actif, insensible aux variations de pH du milieu de dissolution, apr?s administration par voie orale.

The invention concerns a core tablet for the controlled release of gliclazide which ensures continuous and constant release of the active principle, unaffected by the dissolving medium pH variations, after oral administration.