Krill are tiny crustaceans found in every ocean in the world and is an important food source for many marine creatures. Krill oil has been developed as a promising method of delivering omega-3 fatty acids and antioxidants to the body.
Krill oil has some blood thinning properties. Those people who have blood coagulation problems should only take krill oil on the advice of their doctor. Stop taking krill oil at least two weeks before any type of surgery.
People who are allergic to shrimp and other shellfish might experience allergic reactions after taking krill oil.
As with any oil, krill oil may cause diarrhea or loose stools in some individuals. For this reason, people with bowel problems such as IBS should only use krill oil on the advice of their doctor.
Krill oil taken on an empty stomach can cause gas to back up the esophagus and give the user fishy breath.
Some individuals can experience nausea after taking the recommended dose of krill oil. This usually happens when a person's stomach is overly sensitive to vitamins and supplements.