Krill Oil

Last Updated: September 28 2022

Krill oil is a mixture of fatty acids high in EPA and DHA (fish oil fatty acids) in the form of phospholipids, mostly as phosphatidylcholine; it appears to be better absorbed than fish oil, may be more cardioprotective, and has some unique (unexplored) fat burning effects.

Krill Oil is most often used for


Krill Oil is an oil that is derived from krill; it contains the same two fatty acids that Fish Oil contains (Eicosapentaenoic Acid, or EPA, and Docosahexaenoic Acid, DHA). However, a large portion of the EPA and DHA in krill is in the form of a phospholipid, with a phosphate group on the end of the fatty acid. This results in higher bioavailability (rate of absorption) of krill oil, and thus the same effects of Fish Oil can be seen with Krill Oil but at a lower dose.

What else is Krill Oil known as?
Note that Krill Oil is also known as:
  • Euphausiacea superba
Krill Oil should not be confused with:
Dosage information

Supplementation of Krill oil tends to be in the range of 1-3g daily (overall oil weight), which has been used in the clinical trials of krill oil supplementation.

If supplementing in accordance with the omega-3 content, the omega-3 content that is supplemented from krill oil should be equal to approximately 2/3rds that used with basic fish oil supplementation to account for the increased absorption. If one were to normally supplement 1000mg EPA plus DHA, then 660mg of EPA and DHA from krill oil would be equivalent.

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2.^Maki KC, Reeves MS, Farmer M, Griinari M, Berge K, Vik H, Hubacher R, Rains TMKrill oil supplementation increases plasma concentrations of eicosapentaenoic and docosahexaenoic acids in overweight and obese men and womenNutr Res.(2009 Sep)
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19.^[No authors listedKrill oil. MonographAltern Med Rev.(2010 Apr)
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31.^Wibrand K, Berge K, Messaoudi M, Duffaud A, Panja D, Bramham CR, Burri LEnhanced cognitive function and antidepressant-like effects after krill oil supplementation in ratsLipids Health Dis.(2013 Jan 25)
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35.^Priddy AR, Killick SREicosanoids and ovulationProstaglandins Leukot Essent Fatty Acids.(1993 Nov)
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37.^Fosshaug LE, Berge RK, Beitnes JO, Berge K, Vik H, Aukrust P, Gullestad L, Vinge LE, Øie EKrill oil attenuates left ventricular dilatation after myocardial infarction in ratsLipids Health Dis.(2011 Dec 29)
38.^Bloomer RJ, Kabir MM, Canale RE, Trepanowski JF, Marshall KE, Farney TM, Hammond KGEffect of a 21 day Daniel Fast on metabolic and cardiovascular disease risk factors in men and womenLipids Health Dis.(2010 Sep 3)
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41.^Ierna M, Kerr A, Scales H, Berge K, Griinari MSupplementation of diet with krill oil protects against experimental rheumatoid arthritisBMC Musculoskelet Disord.(2010 Jun 29)
43.^Ferramosca A, Conte A, Burri L, Berge K, De Nuccio F, Giudetti AM, Zara VA krill oil supplemented diet suppresses hepatic steatosis in high-fat fed ratsPLoS One.(2012)
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