Best Triglyceride Fish Oil (2026): 8 rTG and TG Oils Checked
Buy Viva Naturals Triple Strength. It has 1,035 mg of EPA and DHA a softgel and costs $0.30 per 1,000 mg, the least of the triglyceride oils we found on a testing list. IFOS, a testing program for fish oil, posts a report for each lot.
By Erin Rose Updated October 24, 2026 How we score
Amazon prices per 1,000 mg of EPA and DHA, checked November 6, 2026.
Our pick for: Most people
- EPA+DHA
- 1,035 mg a softgel2,070 mg in the 2-softgel serving
- Per 1,000 mg
- $0.30Amazon price
- Form
- Re-esterified triglyceride (rTG)On the listing and the IFOS page
- Testing list
- IFOSLot reports online, checked October 24, 2026See the listing
- Tested for drugs banned in sport
- NoIFOS does not test for them
Why we pick it IFOS checks each lot for EPA and DHA, freshness and contaminants, and posts the report. No tested triglyceride oil here costs less.
What you give up The label serving is two large softgels. For one softgel a day, see Sports Research below.
Which triglyceride fish oil is right for you?
Every oil here names the triglyceride form on its label or website. Compare the EPA and DHA, not the big “fish oil” number on the front. How much to take: the dosage guide.
Want just one softgel a day?
Sports Research Triple Strength is one softgel a day, with 950 mg of EPA and DHA. The label says “TG as rTG.” IFOS tests it, and it costs $0.34 per 1,000 mg.
Sports Research Triple Strength
$0.34 per 1,000 mg · IFOS
Drug-tested in your sport?
Momentous Omega-3 is a triglyceride oil, the brand says. NSF Certified for Sport tests it for drugs banned in sport, for every lot. Two softgels give 1,600 mg of EPA and DHA, at $0.83 per 1,000 mg.
Momentous Omega-3
$0.83 per 1,000 mg · NSF Certified for Sport
Want the lowest price?
NOW Tri-3D Omega costs $0.28 per 1,000 mg, less than our pick, but we did not find it on a testing list. Each softgel also has vitamin D3 (1,000 IU on the label NOW filed with NIH), so count it if you take a vitamin D pill.
NOW Tri-3D Omega
$0.28 per 1,000 mg · No testing list found
Every triglyceride fish oil we checked, ranked
We read each label or brand page for the form, searched six testing lists for each oil, and priced each one per 1,000 mg of EPA and DHA on Amazon. Our pick first, then the other tested oils, then the 2 we did not find on a list, each from cheapest.
| Fish oil | Per 1,000 mg | Why it is or is not a pick |
|---|---|---|
| Viva Naturals Triple StrengthRe-esterified triglyceride (rTG) · 1,035 mg a softgel | $0.30 | Our pick: the lowest cost of the tested triglyceride oils, on IFOS |
| Sports Research Triple StrengthTriglyceride · 950 mg a softgel | $0.34 | On IFOS; the label dose is one softgel |
| Carlson The Very Finest Fish Oil (liquid)Triglyceride · 1,300 mg a teaspoon | $0.57 | On IFOS; a lemon-flavored liquid, if you would rather take a spoon than a pill |
| OmegaVia Ultra ConcentratedRe-esterified triglyceride (rTG) · 1,040 mg a softgel | $0.64 | On IFOS; 1,040 mg in one softgel. The brand says its coating stops fish burps; we did not test that |
| Puori O3Triglyceride · 583 mg a softgel | $0.81 | On IFOS; our pick on the best fish oil page if fish burps bother you (the brand’s claim) |
| Momentous Omega-3Triglyceride · 800 mg a softgel | $0.83 | Our pick for drug-tested athletes (NSF Certified for Sport, every lot) |
| NOW Tri-3D OmegaTriglyceride · 550 mg a softgel | $0.28 | About the same price as our pick, but not on a testing list we searched. Adds vitamin D3 |
| Nordic Naturals Ultimate OmegaRe-esterified triglyceride (rTG) · 550 mg a softgel | $0.62 | Only the brand’s own lab reports, and about 2.1 times the cost of our pick |
Which triglyceride fish oils are third-party tested?
6 of 8. IFOS lists Viva Naturals Triple Strength, Sports Research Triple Strength, Carlson The Very Finest Fish Oil (liquid), OmegaVia Ultra Concentrated and Puori O3, each with a lab report for every lot it tests. NSF Certified for Sport lists Momentous for every lot. We did not find Nordic Naturals Ultimate Omega or NOW Tri-3D Omega on IFOS, NSF Certified for Sport, Informed Choice, NSF/ANSI 173, Informed Sport or USP Verified (the last three from our saved copies, August 2026).
How can you tell if a fish oil is triglyceride form?
Look on the Supplement Facts panel for “triglyceride,” “TG” or “rTG.” Most labels don’t say. Of 620 fish oil labels in the NIH label database that list an omega-3 amount, only 28 name the triglyceride form and 49 name ethyl ester (we read them September 23, 2026). If the label is silent, check the brand’s website. Barlean’s names the form on neither, so it is not here. Carlson Elite Gems is not here either: the label Carlson filed with NIH says ethyl ester.
Is triglyceride better than ethyl ester?
A little. Across 14 trials, triglyceride oils raised the omega-3 index about 1 point more at the same dose, and taking ethyl ester with a meal that has fat narrows the gap (the studies). It does not have to cost more: our pick is among the cheapest oils here per 1,000 mg.
Questions people ask
What is the difference between TG and rTG fish oil?
TG means triglyceride, the form omega-3 takes in fish. rTG is fish oil that was concentrated and then turned back into triglyceride, so one softgel can hold more EPA and DHA. Of the 8 oils here, Viva, Nordic Naturals and OmegaVia say rTG on the label or listing; Sports Research says “TG as rTG.”
Is Nordic Naturals Ultimate Omega triglyceride form?
Yes. Its label says the omega-3s are in triglyceride form (rTG). We did not find it on IFOS or NSF Certified for Sport; Nordic posts its own lot reports. It costs $0.62 per 1,000 mg, about 2.1 times our pick.
Sources
- Form, read October 24, 2026: Viva Naturals (Amazon listing and IFOS); Sports Research (NIH label); Carlson The Very Finest (NIH label); OmegaVia (brand label); Puori O3 (NIH label); Momentous (brand website); Nordic Naturals Ultimate Omega (NIH label); NOW Tri-3D Omega (NIH label).
- Testing lists, searched October 24, 2026: IFOS (Viva Naturals, Sports Research, Carlson The Very Finest, OmegaVia, Puori; brand search for Nordic Naturals and NOW Foods); NSF Certified for Sport; Informed Choice. Informed Sport, NSF/ANSI 173 and USP Verified: our saved copies of those lists (August 24, 2026).
- Fish oil labels: our read of 620 fish oil labels that list an omega-3 amount in the NIH Dietary Supplement Label Database, September 23, 2026. Prices: Amazon, checked November 6, 2026.