Krill oil is made from a species of krill [Euphausia superba]. Two of the most important nutrients in krill oil are: (1) omega-3 fatty acids similar to those of fish oil and (2) Phospholipid-derived fatty acids (PLFA), mainly phosphatidylcholine (alternatively referred to as marine lecithin). Also, antioxidant experimental egg products with krill oil likely contained astaxanthin, a natural antioxidant. The fatty acid composition in the phospholipids in krill oil has been described in two papers.
Several studies have shown toxic residues in Antarctic krill and fish.
Considering the much higher price for krill oil, the potentially small increase in bioavailability may not be worth it. Until data exists comparing fish oil to krill oil on intermediate markers of risk and actual disease endpoints it will be difficult to say one is better than the other.
Hercules Krill Oil is a super antioxidant* composed of pure oil delivered from Antarctic krill. Whereas in scientific research, promotes cardiovascular health to maintain cholesterol levels already within the normal range and to support joint health.
Hercules Krill Oil has greater bio-availability than both fish oil and flax oil with up to 48 times more antioxidant activity. Krill Oil's Essential Fatty Acids (EFA's) omega-3 and omega-6 are in ratio close to the human cell resulting in greater absorption than fish oil and flax oil. Unlike fish and flax oils, krill oil is also a natural source of omega-9. It helps to promote healthy cardiovascular and circulatory systems. In addition, Hercules Krill oil has no fishy, repeating after taste, often associated with fish oil.
* Maintain healthy cholesterol levels
* Support joint health