Although krill oil and salmon oil are good sources of the omega-3 fatty acids, EPA and DHA, krill oil does seem to possess other beneficial ingredients such as antioxidants and phospolipids.
Benefits of Omega-3 fatty Acids
Omega-3 fatty acids are essential fatty acids that are not produced by our bodies and therefore need to be supplied by the diet. Health benefits of omega-3 fatty acids include decreasing LDLs (the bad cholesterol), increasing HDLs (the good cholesterol), decreasing triglyceride levels, decreasing blood sugar levels, decreasing symptoms of PMS and dysmenorrhea, increased focus and concentration and decreasing pain and inflammation from rheumatoid arthritis and other aches and pains.
Sources of Omega-3 Fatty Acids
The best sources of the omega-3 fatty acids, EPA and DHA, are from fatty fishes like mackerel, lake trout, herring, sardines, albacore tuna and salmon. Since the average person does not consume fish on a daily basis, many people use fish oil supplements. Krill oil, a relatively new supplement, is gaining in popularity.
Main differences between krill oil and salmon oil
Krill oil differs from salmon oil in the following ways: krill oil contains both omega-3 fatty acids EPA and DHA and also contains Vitamins E, A and D; krill oil contains the potent antioxidants astaxanthin and canthaxanthin; krill oil is more easily absorbed, so you do not need as much and you do not get the fishy aftertaste; krill oil has a longer shelf life; and krill oil is more expensive.
What little research that is out there regarding krill oil tends to show that it is superior to salmon oil, but not enough studies have been done to give a definitive answer as of now, according to the National Center for Biotechnology Information. Both seem to be excellent sources of DHA and EPA. While salmon oil contains the same amount of these essential fatty acids as the krill oil, krill oil does seem to possess other helpful ingredients.
Krill oil should be avoided if you are allergic to shrimp or shellfish until more research is done on its safety.
Before you take any medications or nutritional supplements your physician should be consulted.