The present invention relates to pharmaceutical compositions of (3S,11aR)- N-[(2,4-difluorophenyl)methyl]-2,3,5,7,11,11a-hexahydro-6-hydroxy-3-methyl-5,7- dioxo-oxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamide, useful in the treatment or prevention of Human Immunodeficiency Virus (HIV) infections.Linvention concerne des compositions pharmaceutiques de (3S,11aR)- N-[(2,4-difluorophényl)méthyl]-2,3,5,7,11,11a-hexahydro-6-hydroxy-3-méthyl-5,7- dioxo-oxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamide utiles dans le traitement ou la prévention dinfections par le Virus de lImmunodéficience Humaine (VIH).
