According to MegaRed, krill oil does not have the fishy aftertaste that is associated with fish oil capsules. However, some people may still experience unpleasant side effects after taking krill oil, notes Drugs.com. MegaRed also states that their krill oil capsules are smaller and easier to swallow than fish oil.
The body processes the omega-3 fatty acids in krill oil differently than fish oil. Krill oil is absorbed and spread to cells in the body in phospholipid form. MegaRed Krill Oil comes from oceans that may be more pure than fish oil sources. MegaRed Krill Oil is made just from Antarctic krill, while fish oil may come from a variety of different fishes. MegaRed also claims that krill is a more sustainable option when harvested in an environmentally conscious way.
Some fish such as swordfish, tuna and marlin may contain mercury and other toxins, according to the FDA. Some people prefer to get omega-3 fatty acids from krill oil because they believe it is less likely to be contaminated. Krill may also contain mercury and other toxins, although the risk may be lower because krill are lower on the food chain. As of 2015, a study suggests that Antarctic krill may contain significant amounts of organic pesticides.