The active drug substance Omega-3 acid ethyl esters 90 and Omega-3 carboxylic acids are obtained by transesterification of the gody oil obtained from fish of families as Engraulidae, and subsequent purification processes including KinOmega Multi-Step Molecular Distillation, It is used as a health product in peventaion and cure of heart and brain blood disease, and relieving rheumatoid arthritis symptom. The major components are EPA and DHA.