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Omega-3 over 50 — read the EPA and DHA lines, not the big number on the front.

“1,000 mg fish oil” on the front of the bottle tells you almost nothing. The number that matters is the combined EPA + DHA on the back — and in a lot of cheap bottles, it’s a fraction of what you think you’re buying. Here’s how to read it and buy one that isn’t rancid.

AF
After Forty Feel EditorialUpdated June 2026 · independently chosen
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30-second version. Ignore the “fish oil” headline and read the combined EPA + DHA per serving — most research uses roughly 1,000–2,000 mg EPA+DHA daily. Buy third-party tested (IFOS or USP) and check it isn’t oxidized (low TOTOX; no harsh fishy aftertaste). Triglyceride-form absorbs slightly better than ethyl-ester. Algae oil is the vegan option and works fine. Take it with a meal.

Why it matters after 50

EPA and DHA are the active omega-3s tied to heart, brain and joint health, and most modern diets run short on them. The evidence is strongest for triglyceride and cardiovascular markers; the “cures everything” claims are oversold, but a properly dosed omega-3 is a reasonable, well-tolerated addition for many people over 50.

What to checkVerdictWhy
Combined EPA + DHA per servingThe only number that mattersThe front-label “fish oil” figure is mostly filler oil
Third-party tested (IFOS / USP)RequiredPurity and oxidation vary wildly
Triglyceride formPreferredSlightly better absorbed than ethyl-ester
Algae oilGood vegan optionSame EPA/DHA, no fish
Top pick

Third-party-tested omega-3, high EPA+DHA, triglyceride form

Pick a bottle that lists a high combined EPA+DHA per serving, carries an IFOS or USP seal, and is in triglyceride form. That usually means fewer, smaller pills for the same dose. Prefer plant-based? An algae oil with the same EPA+DHA is a clean swap.

Compare omega-3 supplements →

How to take it

Take it with your largest meal to improve absorption and cut down on fishy burps, and store it somewhere cool. If you’re on a blood thinner or heading into surgery, mention high-dose omega-3 to your clinician first. Food first where you can — oily fish a couple of times a week does the same job — with the supplement filling the gap, alongside the basics like vitamin D if you’re short.

Sources: Reviews on EPA/DHA dosing and cardiovascular outcomes (e.g., PubMed); NIH Office of Dietary Supplements — Omega-3. Educational only — not medical advice.

Frequently asked

How much do I need?
Roughly 1,000–2,000 mg combined EPA+DHA a day in most research. Read those two label lines, not the headline.
Fish oil or algae oil?
Both deliver EPA and DHA. Algae is the vegan choice; fish oil is usually cheaper per dose.
How do I avoid rancid oil?
Buy third-party tested, check for low oxidation, and store it cool. A harsh fishy aftertaste means it’s oxidized.