The present invention relates to solid, non-crystalline agomelatine, a composition comprising said solid, non-crystalline agomelatine, a pharmaceutical formulation comprising said solid, non-crystalline agomelatine or said composition and methods for the preparation of said composition and formulation.La présente invention concerne de l'agomélatine solide, non cristalline, une composition comprenant ladite agomélatine solide, non cristalline, une formulation pharmaceutique comprenant ladite agomélatine solide, non cristalline ou ladite composition et les procédés pour la préparation desdites composition et formulation.