Omega-3 Dosage Guide (2026): How Much EPA+DHA Do You Actually Need?

Last updated: May 9, 2026
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✅ Medically Reviewed 2026📅 Updated May 2026📚 Peer-reviewed sources

Omega-3 Dosage Guide (2026): How Much EPA+DHA Do You Actually Need?

Most omega-3 supplements label total fish oil content — not EPA+DHA content. A “1,000mg fish oil” capsule may contain only 300mg of combined EPA+DHA. Dose to EPA+DHA content, not to fish oil weight.

Dose by Goal

Goal Daily EPA+DHA Dose Key RCT
General health maintenance 500–1,000mg AHA guidelines
Cardiovascular risk reduction 1,000–2,000mg EPA REDUCE-IT (4g/day icosapentaenoic acid)
Anti-inflammatory / joint pain 2,000–3,000mg AJCN 2020 meta-analysis
Depression / mood support 1,000–2,000mg EPA Meta-analysis (26 RCTs, n=1,546)
Triglyceride reduction 3,000–4,000mg AHA prescription dose (Vascepa)

rTG vs Ethyl Ester: Why Form Matters

Triglyceride (TG) and re-esterified triglyceride (rTG) forms absorb 70% better than ethyl ester (EE) forms. Most cheap fish oils are ethyl ester. If you’re dosing at 1,000mg EPA+DHA in EE form, you’re likely absorbing ~650mg. In rTG form, absorption is close to 100%. Pay more for rTG — or compensate with higher EE doses.

Related: Omega-3 Supplement Review | Fish Oil vs Krill Oil

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