Essential Omegas is a high-quality concentrated blend of fish oils providing an excellent source of omega-3 fatty acids in their naturally existing ratios from a high-quality blend of Chilean anchovy, sardine, and mackerel fish oils.* -Purified through a comprehensive distillation process. -PCB and heavy metal tested: guaranteed to be below Prop 65 limits. -Contains essential omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)