A member asked:

1 gm of krill oil (420mg omega-3) and 1 gm of fish oil (500mg omega-3) is there any different in terms of efficiency and absorption ?

A doctor has provided 1 answer
Dr. Ralph Morgan Lewis answered

Specializes in Family Medicine

See below: Both are good sources of omega-3's & both should be purchased from reliable sources. Major concern is possible mercury contamination, which is more likely & in higher concentration in fish as they are higher in food chain & toxins are more concentrated. Krill come from deep antarctic waters where toxins are less likely to be found. Sources also recommend astaxanthin (an antioxidant) be present.

Answered 4/14/2014

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