Sports Research Antarctic Krill Oil 1000 mg Review

For most krill-appropriate buyers, yes. It delivers 196 mg combined EPA+DHA (136 EPA / 60 DHA) in a single softgel, sources it from Superba2 — Aker BioMarine's MSC-certified, fully traceable Antarctic krill — is IKOS-listed, and costs about $2.63 per gram of actives ($30.95 for 60), within a few cents of the cheapest on our list. The phospholipid-bound format gives a small per-mg absorption edge (Ulven 2011, Ramprasath 2013), 400 mg phospholipids per cap is a solid load (the 100 mcg astaxanthin is small), and the burp profile is near-zero. The only honest reasons to look elsewhere: you want the clinically-studied NKO branded oil (NOW Neptune) or you're optimising raw cost-per-mg of EPA+DHA, where concentrated fish oil wins decisively.

Superba2 is Aker BioMarine's branded Antarctic krill oil — the most prominent traceable krill source alongside Neptune's NKO. It signals a real supply chain: Aker holds MSC certification for its Antarctic krill fishery, runs Eco-Harvesting at sea, and publishes chain-of-custody documentation. Practically, a branded source like Superba2 (versus uncertified bulk krill) is the difference between a verifiable phospholipid + astaxanthin spec and a front-of-bottle 'krill oil mg' number you can't trust. Sports Research building on Superba2 is the single biggest reason this bottle ranks #1.

196 mg of combined EPA+DHA per softgel — 136 mg EPA and 60 mg DHA — from 1000 mg of krill oil. That's a strong single-softgel dose for krill (only Kori's 250 mg is higher), but it's still a fraction of the 500-900 mg combined a concentrated fish-oil capsule delivers. This is the core krill trade: the '1000 mg krill oil' on the front is total oil, of which only ~25% is EPA+DHA. To reach the 250-500 mg/day general-wellness floor, one softgel is close; chasing the 1-2 g/day cardiovascular range on krill alone would take 6-10 softgels, which is exactly where fish oil becomes the cheaper route.

Two things, one meaningful and one minor. The meaningful one: astaxanthin is the carotenoid that gives krill its red colour and acts as a built-in antioxidant, keeping the fragile omega-3s from oxidising — which is why this oil resists rancidity and produces almost no fishy repeat. At 100 mcg per softgel, Sports Research carries one of the lower astaxanthin loads on our krill list (Viva prints 1.6 mg per serving). The minor one: astaxanthin has its own modest cardiovascular/skin evidence, but dedicated trials use 4-12 mg/day, so 100 mcg is a stability feature, not a therapeutic dose. Don't buy this expecting standalone astaxanthin benefits.

If you're optimising cost-per-mg of EPA+DHA, fish oil — it delivers 3-5× more actives per dollar, and concentrated triglyceride-form fish oil already absorbs well. Krill's phospholipid edge is real but small (~10-20% per mg, Ulven 2011) and doesn't close that gap. Sports Research Krill wins specifically when (a) you've tried fish oil — even premium rTG — and the fishy burps make you quit, or (b) you want astaxanthin bundled in. In those two cases this is the krill to buy; it's the cleanest-tolerated, best-sourced, near-lowest-$/g option in the category. For everyone else chasing a high Omega-3 Index, run fish oil and put the savings into more actives.

No — default to a vegan algal-oil omega-3 instead. Krill (Euphausia superba) are crustaceans, and krill oil contains residual crustacean proteins that can trigger reactions in shellfish-allergic people. Sports Research's oil is processed like other premium krill to minimise allergenic protein, but residual exposure is possible and allergic reactions to krill are documented in the literature. If you have any shellfish allergy, skip every krill product — algal oil delivers the same EPA+DHA with zero crustacean exposure.

1. [1] Ramprasath 2013 PMID 24304605 — Enhanced increase of omega-3 index in healthy individuals with response to 4-week n-3 fatty acid supplementation from krill oil versus fish oil. Head-to-head trial: krill oil raised the Omega-3 Index more than an equivalent dose of fish oil over 4 weeks, supporting the phospholipid-delivery absorption advantage — though the effect size is modest, not the 'dramatically superior' marketing framing.
2. [2] Ulven 2011 PMID 21042875 — Metabolic effects of krill oil are essentially similar to those of fish oil but at lower dose of EPA and DHA, in healthy volunteers. Krill oil produced metabolic effects and plasma EPA+DHA increases comparable to fish oil despite a lower absolute dose — direct evidence for krill's per-milligram phospholipid absorption edge, while underscoring how little EPA+DHA krill actually contains.
3. [3] Maki 2009 PMID 19854375 — Krill oil supplementation increases plasma concentrations of eicosapentaenoic and docosahexaenoic acids in overweight and obese men and women. Krill oil raised plasma EPA+DHA comparably to menhaden (fish) oil at a similar omega-3 dose, confirming bioequivalence of the phospholipid form — the basis for treating krill as a legitimate but expensive omega-3 source.
4. [4] Köhler 2015 PMID 25884846 — Bioavailability of fatty acids from krill oil, krill meal and fish oil in healthy subjects — a randomized, single-dose, cross-over trial. Cross-over bioavailability study comparing krill oil, krill meal, and fish oil: confirmed efficient incorporation of EPA+DHA from the phospholipid krill form, with source differences that are real but small relative to the dose and cost gap.
5. [5] Harris 2008 (Omega-3 Index) PMID 15208005 — The Omega-3 Index: a new risk factor for death from coronary heart disease?. Established the Omega-3 Index (RBC EPA+DHA %) as a cardiac-risk marker, with an Index above 8% tied to the lowest risk of death from coronary heart disease — the endpoint that justifies tracking actives intake regardless of source.
6. [6] Tou 2007 (krill composition) PMID 17345959 — Krill for human consumption: nutritional value and potential health benefits. Comprehensive review of krill composition documenting the phospholipid-bound EPA+DHA structure and naturally occurring astaxanthin that gives krill oil its oxidative stability — the mechanistic basis for the no-burp, rancidity-resistant profile.