What is krill oil sourced directly from sustainable antarctic krill krill oil is an exceptionally pure and sustainable source of omega 3 why use krill oil highly rich in the omega 3 fatty acids epa eicosapentaenoic acid and dha docosahexaenoic acid krill oil has been shown to contribute to normal blood pressure and maintenance of blood triglyceride levels to support cardiovascular health krill oil is also a natural source of astaxanthin who can benefit krill oil offers an effect