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Fatty acid

Krill Oil

Krill oil is extracted from Antarctic krill, small shrimp-like crustaceans. It contains the omega-3 fatty acids EPA and DHA, largely bound to phospholipids.

Also listed as Euphausiacea superba

Organ FunctionLongevityCardiovascularBone & JointHair & Skin

Stomach effects and medicines

Omega-3 supplements can cause heartburn, nausea or diarrhea. NIH advises discussing possible interactions with a clinician when medicines are taken regularly, including anticoagulants. 1

High-dose omega-3s need a separate safety discussion

BfR advises people with heart disease or cardiovascular risk factors to discuss omega-3 supplements with a doctor, especially for prolonged use. Higher-dose omega-3 trials found an increased risk of atrial fibrillation, an irregular heartbeat. This broader safety evidence is not a krill-specific risk estimate. 2

Seafood allergy and pregnancy

NIH recommends medical advice before omega-3 supplements for people with seafood allergy, during pregnancy or breastfeeding, and when considering them for a child. 3

For information, not individual medical advice. Ingredient studies do not establish the effectiveness of these products.

Sources

  2. Omega-3-Fettsäuren: Wichtig, aber in Maßen Bundesinstitut für Risikobewertung
  3. What Are Omega-3s? NIH News in Health, 2025