The verified risks of krill oil include its tendency to slow the clotting of blood and that it may trigger seafood allergies, according to WebMD. It is potentially safe for the majority of adults when they use it according to their physician's instructions for as long as three months.
People take krill oil for a number of different benefits, explains WebMD. Some research shows that krill oil can reduce both total cholesterol and the LDL, or bad, cholesterol, while increasing levels of the HDL, or good, cholesterol. This can happen when the patient takes 1 to 1.5 grams daily. Doses between 2 and 3 grams per day may reduce triglycerides, a type of fat in the blood. Research shows that one specific krill oil product cuts the stiffness and pain in osteoarthritis patients. Those with PMS and rheumatoid arthritis can also benefit from this supplement.
Despite the fact that people take krill oil for these benefits and to fend off high blood pressure, depression, cancer, stroke and other conditions, more medical evidence is necessary to provide an accurate rating of the effectiveness, explains WebMD.
Potential side effects include a danger for surgical patients because it hinders blood clotting, states WebMD. People should stop taking krill oil supplements a minimum of two weeks before the scheduled date of the surgery.