This comparison is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting any supplement.
Fish Oil vs Krill Oil: Nordic Naturals vs Sports Research 2026 Comparison
Nordic Naturals fish oil vs Sports Research krill oil compared. EPA/DHA content, bioavailability, sustainability, and real user experiences.
WellHack™ Score
How we scoreComposite score based on ingredient quality, dosage transparency, third-party testing, price per serving, and user complaints.
Cost Calculator
Compare the real daily and monthly cost based on your usage.
Nordic Naturals Ultimate Omega
$27.95/mo
Sports Research Antarctic Krill Oil 1000mg
$15.48/mo
Cost per serving = container price ÷ servings per container. Daily cost = cost per serving × servings per day.
Ingredient Comparison
| Ingredient | Nordic Naturals Ultimate Omega | Sports Research Antarctic Krill Oil 1000mg | Edge |
|---|---|---|---|
| Omega-3 Source | Purified deep-sea fish oil (anchovy and sardine) | Antarctic krill oil (Euphausia superba) with Superba2 | |
| EPA Per Serving | 650mg EPA (triglyceride form) | ~120mg EPA (phospholipid form) | Nordic |
| DHA Per Serving | 450mg DHA (triglyceride form) | ~55mg DHA (phospholipid form) | Nordic |
| Bioavailability | Triglyceride form — natural but standard absorption | Phospholipid form — superior absorption at lower doses per meta-analysis (PMID 32073633) | Sports |
| Astaxanthin | Not included | Naturally occurring antioxidant (gives krill oil red color) | Sports |
| Choline | Not included | Naturally occurring phosphatidylcholine for brain and liver support | Sports |
| Cost Per Serving | $0.93/serving (30 servings at $27.95) | $0.52/softgel (60 softgels at $30.95) | Sports |
| Fishy Aftertaste | Lemon-flavored but fishy burps still reported by many users | Minimal fishy taste — krill oil capsules are smaller and less prone to reflux | Sports |
| Sustainability | Friend of the Sea certified | MSC Certified Sustainable (Marine Stewardship Council) | |
| Allergen Risk | Contains fish — no shellfish | Contains shellfish (krill) — serious risk for shellfish-allergic individuals | Nordic |
Real User Complaints
Sourced from Amazon reviews, Reddit, and Trustpilot. Not AI-generated.
Nordic Naturals Ultimate Omega
Nordic Naturals earned only a Grade C on Labdoor's quality ranking, and multiple r/Supplements users flag that the brand is not IFOS certified — a notable gap for a premium fish oil. At $27.95 for 60 softgels (30 servings of 2 softgels each), the cost per EPA/DHA gram is significantly higher than bulk alternatives. Users also report strong fishy aftertaste and burps despite the lemon flavoring, and the triglyceride form, while natural, requires two softgels per serving.
Sports Research Antarctic Krill Oil 1000mg
Krill oil users on r/Supplements report that it 'made my tinnitus worse — usually it's dull and constant but every day I would get a 5 minute long piercing sound.' The product contains shellfish (Antarctic krill), which is a serious allergen risk not always prominently disclosed. At 1000mg krill oil per softgel, the actual EPA+DHA content is significantly lower than concentrated fish oil — typically ~120mg EPA and ~55mg DHA vs fish oil's ~650mg EPA and ~450mg DHA per serving.
References
The Verdict
Nordic Naturals delivers far more EPA and DHA per serving (1100mg vs ~175mg), making it the better choice for anyone targeting specific omega-3 doses for joint or cardiovascular support. Sports Research Krill Oil wins on bioavailability per milligram, adds unique benefits from astaxanthin and choline, and causes fewer fishy burps — but you would need 6+ krill softgels to match one Nordic Naturals serving. Choose fish oil for omega-3 potency; choose krill oil for convenience and additional nutrients if you are not shellfish-allergic.
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The content on DailyWellHacks is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment. We are not healthcare professionals. The information provided reflects our independent research of publicly available product data, published studies, and user-reported experiences.
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