Fatty Acid

Krill Oil (NKO®)

Also known as: Euphausia superba, Antarctic krill oil, NKO™

Evidence

Krill oil is a marine source of omega-3 fatty acids (EPA and DHA) bound to phospholipids, which may enhance bioavailability compared to fish oil triglycerides. NKO® is a patented, sustainably harvested krill oil extract standardized for phospholipid content.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

Cardiovascular health support
Cognitive function
Joint health
Inflammatory response modulation

How it works

EPA/DHA omega-3 fatty acids reduce inflammatory mediators
Phospholipid form enhances cellular membrane incorporation
Astaxanthin provides antioxidant protection

Dosage

Typical range: 1,000–3,000 mg daily
Timing: With meals
With food: Recommended; fat-soluble and better absorbed with dietary fat
Duration: Consistent daily use recommended; benefits typically observed after 4–12 weeks
Special populations: Pregnant/nursing women should consult provider; those on anticoagulants should discuss with healthcare provider

Forms

Softgel capsules· 70/100

Safety

Common side effects

Mild fishy aftertaste
Gastrointestinal upset (rare)
Nausea (uncommon)

Contraindications

Shellfish allergy (krill is a crustacean)
Bleeding disorders without medical supervision
High-dose anticoagulant therapy without medical consultation

Products containing Krill Oil (NKO®)

Top-scoring supplements in our catalog that list Krill Oil (NKO®) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

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NKO™ Krill Oil Softgels

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Evidence notes

Multiple RCTs support omega-3 benefits for cardiovascular and cognitive health. Krill oil specifically shows good evidence for lipid profiles and joint comfort. Phospholipid delivery form has emerging evidence for superior absorption vs. triglyceride fish oil.

Grade B: Some human trials support key claims; further confirmation needed.

Related in Fatty Acid

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.