The invention relates to coated tablets comprising the pharmaceutically active substance diclofenac. Said tablets are characterized by a special, very beneficial coating based on hydroxypropyl methylcellulose.Linvention concerne des comprimés revêtus renfermant la substance pharmaceutiquement active diclofénac. Leur revêtement est spécial, très bénéfique, à base dhydroxypropyle méthylcellulose.