Nordic Naturals Ultimate Omega Review: Would Buyers Buy It Again?
Disclosure: As an Amazon Associate I earn from qualifying purchases. If you buy through links on this page we may earn a commission at no extra cost to you. How this review was made: We did not test this product in person. This verdict is based on our analysis of retailer listings and ratings, independent IFOS certificates, ConsumerLab's public summary and research reviews, all listed at the end of this article. Our method.
A high-quality fish oil buyers stick with, if fish oil is right for you
Ultimate Omega packs 1,280 mg of omega-3s, including 650 mg EPA and 450 mg DHA, into two softgels, which is roughly double the EPA and DHA of many basic fish oils. A published IFOS certificate gave a tested lot five out of five stars, with omega-3 levels above the label and contaminants well under limits. Vitacost shoppers rate it 4.8 out of 5 across 236 reviews, mostly praising the lack of fishy aftertaste. The caveats belong to fish oil in general: research shows a modest triglyceride drop and some benefit for people with heart disease, but little clear benefit for healthy adults. If you and your doctor have decided on fish oil, buyers say this one is worth reordering.
Check current price on Amazon → Prices and availability change often, so we don't list them here.Buy it again if you…
- have been advised to take EPA and DHA and want fewer softgels per dose
- dislike fishy burps and aftertaste
- want published third-party purity results
Skip it if you…
- are healthy, eat fish regularly and expect big preventive benefits
- have trouble swallowing large softgels
- take blood thinners or have a fish allergy, unless your doctor approves
This review summarizes buyer experiences, independent testing and published research and is not medical advice. Dietary supplements are not evaluated by the FDA to treat, cure or prevent any disease. Check with a doctor or pharmacist before starting a supplement, especially if you are pregnant or breastfeeding, take medication (fish oil may matter if you take blood thinners), have a fish allergy, or have a health condition.
Nordic Naturals Ultimate Omega is a concentrated, lemon-flavored fish oil in triglyceride form. According to the Vitacost listing, two softgels give 1,280 mg of omega-3s, including 650 mg EPA and 450 mg DHA, from wild-caught anchovies, sardines, mackerel and herring. The softgel shell is fish gelatin. Nordic Naturals also sells a stronger Ultimate Omega 2X.
We looked at retailer ratings, independent purity certificates and research summaries to see what buyers report and what the evidence supports.
What owners say, at a glance
Bars show our editorial summary of how consistently owners praise or complain about each area across all sources — not a lab measurement.
The key details
| Serving | 2 softgels with food |
|---|---|
| Per serving | 1,280 mg omega-3s: 650 mg EPA, 450 mg DHA |
| Form | Triglyceride |
| Fish source | Wild-caught anchovies, sardines, mackerel, herring |
| Softgel | Fish gelatin (tilapia), glycerin, natural lemon flavor, vitamin E, rosemary extract |
| Testing | Third-party purity tested, Friend of the Sea certified, per Vitacost |
What buyers love
What buyers complain about
Independent testing
An IFOS (International Fish Oil Standards) certificate published by Nutrasource for an Ultimate Omega lot gave it five out of five stars. It measured 669 mg omega-3s per softgel against a 640 mg label claim, passed freshness tests, and found mercury, lead, PCBs and dioxins far below limits. That certificate is for an older lot, so it shows the brand's track record rather than proving today's bottle. ConsumerLab included Ultimate Omega in its 2026 fish oil review, but its product-level results are for members only, so we could not confirm them. ConsumerLab notes that lemon oil in flavored fish oils can interfere with freshness testing.
What the research says
The NIH National Center for Complementary and Integrative Health (NCCIH) says there is some evidence that people with heart disease or high triglycerides may benefit from omega-3s. A 2020 review of 23 studies found EPA and DHA lowered triglycerides by about 15 percent, and reviews found small reductions in coronary events. Supplements showed little or no effect on stroke.
For healthy people the picture is weaker. In VITAL Rhythm, 1 g a day of omega-3s did not change atrial fibrillation rates in generally healthy adults. A Cooper Clinic cardiologist notes that trials using 4 g a day saw more atrial fibrillation than placebo, which is well above a standard serving of this product. Common side effects are mild: unpleasant taste, bad breath, heartburn, nausea or diarrhea.
Tips from buyers
- Take it with a meal, as the label directs, to reduce aftertaste and stomach upset.
- Check your target dose. If a clinician gave you an EPA and DHA goal, you may need fewer softgels than with a basic fish oil.
- Smell a new bottle. A strong rancid smell is a reason to contact the seller.
- Don't stack high doses without medical advice, since very high intakes have been linked to atrial fibrillation in trials.
Pros and cons
What owners love
- 1,100 mg EPA + DHA in two softgels
- Five-star IFOS result for a published lot
- Buyers rarely report fishy burps
- Triglyceride form with a fish gelatin softgel
- Strong retailer ratings
What owners complain about
- Higher cost per serving than basic fish oils
- Softgels are large for some
- Not suitable for vegetarians or fish allergies
- Weak evidence of benefit for healthy adults
Other fish oils buyers compare
These are popular fish oils at different strengths.
| Product | Style | Consider it if… | |
|---|---|---|---|
| Nordic Naturals Ultimate Omega (this review) | Concentrated triglyceride softgel | You want high EPA and DHA in fewer softgels with little aftertaste | See on Amazon |
| Nature Made Fish Oil 1200 mg Read our review | Standard softgel, USP Verified | You want a lower-dose, widely available basic fish oil | See on Amazon |
| Kirkland Signature Fish Oil | Standard softgel, large bottle | You want a big warehouse-club bottle for daily use | See on Amazon |
Has your doctor suggested an omega-3 supplement?
Check current sizes and the 2X option on Amazon.
Frequently asked questions
How much EPA and DHA is in Ultimate Omega?
Two softgels give 650 mg EPA and 450 mg DHA, with 1,280 mg total omega-3s, according to the Vitacost listing.
Is Nordic Naturals third-party tested?
Yes. The listing says it is third-party purity tested, and IFOS has published a five-star certificate for an Ultimate Omega lot.
Does it cause fishy burps?
Buyers most often praise the lack of fishy aftertaste and the lemon flavor. Taking it with food can help further.
Is the softgel made from pork or beef gelatin?
No. Vitacost lists fish gelatin from tilapia.
Will fish oil prevent heart problems?
Evidence is mixed. Omega-3s can lower triglycerides and may help people with heart disease, but large trials in healthy adults show little clear benefit. Talk to your doctor.
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Sources we analyzed
- Vitacost: Nordic Naturals Ultimate Omega Lemon — label amounts, ingredients, testing claims, rating and review themes
- Walmart: Nordic Naturals Ultimate Omega 2X — 2X amounts and rating
- Nutrasource IFOS certificate: Ultimate Omega — five-star lot result, potency and contaminants
- ConsumerLab: Best fish oil and omega-3 supplements (2026) — products tested, lemon oil and freshness testing
- NCCIH: Omega-3 supplements, what you need to know — heart and triglyceride evidence, side effects
- Cooper Clinic: Omega-3 and AFib risk — VITAL Rhythm and high-dose trial results
Figures reflect each source as of October 14, 2026 and may change. We summarize owner feedback in our own words and do not reproduce retailer reviews.