The present invention relates to a solid pharmaceutical composition comprising (S)- 2-(2-oxopyrrolidin-1-yl)butanamid, in particular to granules comprising (S)-2-(2- oxopyrrolidin-1-yl)butanamid, and to the preparation thereof.Cette invention concerne une composition pharmaceutique solide comprenant un (S)-2-(2-oxopyrrolidin-1-yl)butanamide, en particulier, des granules comprenant un (S)-2-(2-oxopyrrolidin-1-yl)butanamide, et leur procédé de préparation.