Krill oil is an oil obtained from marine invertebrates belonging to the order of the Euphausiacea. Krill oil is a source of polyunsaturated fatty acids, in particular omega 3, which have been associated with beneficial properties in terms of reducing cholesterol, inflammation and the ability of platelets to aggregate to form dangerous blood clots. Its intake is proposed to combat cardiovascular disease, excessive levels of triglycerides or cholesterol in the blood, stroke, tumors, osteoarthritis, premenstrual syndrome depression and painful menstruation.