MegaRed Advanced Antarctic Krill Oil 500 mg Review

Less than the front of the bottle suggests. The '500 mg' is total krill oil, not omega-3 — only about a fifth of that is the active EPA+DHA. A single MegaRed Extra Strength softgel delivers 94 mg of EPA+DHA (64 mg EPA / 30 mg DHA; 115 mg total omega-3), the lowest per-softgel active dose of any krill oil on our best-krill-oil list. By comparison a single concentrated fish-oil capsule carries 500-900 mg combined. To reach even the 250-500 mg/day general-wellness floor on MegaRed alone you'd take 3-6 softgels, and the cardiovascular 1-2 g/day range is impractical from this bottle. Read the supplement-facts 'Total Omega-3 Fatty Acids' line, never the headline krill-oil milligrams.

On dose-per-dollar, no — on convenience and trust, sometimes. The $0.30/softgel sticker looks cheap, but because each softgel carries only 94 mg of actual EPA+DHA, the real cost works out to $3.18 per gram of EPA+DHA — mid-pack on the krill list, not cheap once you normalise for the low dose. You're paying a premium for the MegaRed brand and the fact that every pharmacy in America stocks it. If cost-per-milligram of omega-3 is your priority, Sports Research krill (about $0.52/softgel for 196 mg) or any concentrated fish oil delivers far more actives per dollar. MegaRed makes sense for the convenience-first buyer, not the dose-optimiser.

It's MegaRed's branded purification step. Reckitt markets PureTech as removing salts and other impurities to yield a krill oil it calls '3x more pure than regular krill oil.' Mechanistically, krill is already a very low-contaminant source — krill sit at the bottom of the food chain eating phytoplankton, so they bioconcentrate virtually no mercury or PCBs regardless of processing. PureTech is a real, if modest, cleanliness step that contributes to the clean taste and no-fishy-aftertaste profile MegaRed is known for. It is not third-party oxidation certification (like IFOS or IKOS), which MegaRed does not publish — so treat PureTech as a brand quality claim, not an independent purity audit.

Advertising and shelf dominance. MegaRed (owned by Reckitt, formerly Schiff) has run one of the largest sustained TV and retail campaigns of any omega-3 brand, and it's stocked in essentially every US pharmacy, grocery, and big-box store. That brand trust and availability are its genuine strengths — for a first-time omega-3 buyer who wants something recognisable they can grab tonight, MegaRed is a low-friction choice. The trade-off is that the marketing budget and brand premium are baked into a product that delivers a comparatively small omega-3 dose. Recognition and convenience are real value; they just aren't the same thing as the most omega-3 per dollar.

Watch the SKU carefully. This review covers MegaRed Extra Strength 500 mg Krill Oil (ASIN B0184SMS9A, 90-count) — the single-ingredient pure-krill softgel. MegaRed also sells an 'Advanced 4-in-1' line that blends fish oil and krill oil (different actives, different label), a 350 mg krill version, and a 750 mg 'Ultra Concentration.' These all carry the MegaRed name and look similar on the shelf, which genuinely confuses buyers. If you specifically want pure Antarctic krill oil at the once-daily 500 mg dose reviewed here, confirm the box says 'Extra Strength 500 mg Krill Oil' and not '4-in-1' or 'Fish & Krill.'

No — default to algae-source omega-3 instead. Krill are crustaceans (tiny shrimp-like animals) and krill oil contains residual crustacean proteins that can trigger reactions in shellfish-allergic people. MegaRed's PureTech process reduces impurities but does not make the product safe for a shellfish allergy. If you have any documented shellfish allergy, skip every krill oil including MegaRed and use a vegan algal-oil omega-3 (Ovega-3) — same EPA+DHA actives, zero crustacean exposure.

1. [1] 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 delivering a lower absolute dose — direct evidence for the per-milligram phospholipid absorption edge, while underscoring how little EPA+DHA krill softgels like MegaRed actually contain.
2. [2] 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. Krill oil raised the Omega-3 Index more than an equivalent dose of fish oil over 4 weeks, supporting the phospholipid-delivery advantage — though the effect size is modest, not the dramatic superiority krill marketing implies.
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 dose-light and expensive omega-3 source.
4. [4] 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 lowest CHD-event risk. At 94 mg EPA+DHA per softgel, a once-daily MegaRed softgel is far below the intake needed to move this index meaningfully.
5. [5] Mozaffarian 2011 PMID 22051327 — Omega-3 fatty acids and cardiovascular disease: effects on risk factors, molecular pathways, and clinical events. Comprehensive omega-3 cardiovascular review establishing meaningful triglyceride and event-risk effects at 1-4 g/day combined EPA+DHA — doses a single MegaRed softgel falls far short of, requiring several softgels daily to approach.
6. [6] Tou 2007 (krill composition) PMID 17345959 — Krill for human consumption: nutritional value and potential health benefits. 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 MegaRed's clean, no-fishy-aftertaste profile.