Impact of an Optimized Formulation of Omega 3 on the Composition of Atheromatous Plaques in Patients Requiring Carotid Endarterectomy

Inclusion Criteria: * Men or women between 30 and 85 years * Affiliated to a social security scheme * Informed consent signed * Patients to get an endarterectomy carotid stenosis\> 70% asymptomatic is * Women of childbearing potential (negative pregnancy test), effective contraception for the duration of the study Exclusion Criteria: * Inability to give informed information about the study (subject in emergencies, difficulty of understanding ...) * Patient treated by OMACOR® * Patients on oral anticoagulant (AVK, apixaban, dabigatran, rivaroxaban) * Daily consumption of fish oil (medical food with fish oil (omega 3)) * Carotid Restenosis * Pregnancy (positive pregnancy test) and lactation * Hypersensitivity to fish * Allergy to fish * Subject under judicial protection * Subjects under guardianship or curatorship