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Omega-3

How to Read Omega-3 Labels

Total oil vs EPA + DHA, oil forms, source and cost per 1,000 mg.

Updated September 28, 20261 min readBy the SuppScout Editorial Team
The short answer

On omega-3 labels, add the EPA and DHA lines — that’s the number to compare. The big “fish oil” milligram number on the front is total oil, which can be 30% omega-3 or 80%. Then check the source (fish, krill, algae), oil form if stated, softgel material, and cost per 1,000 mg EPA + DHA.

Key takeaways
  • Total oil ≠ omega-3.
  • EPA + DHA per serving is the comparable amount.
  • Many labels don’t state ethyl ester vs triglyceride.

Find EPA + DHA

The Supplement Facts panel lists EPA and DHA separately. Add them. Some labels also list “total omega-3s”, which can include other omega-3s — EPA + DHA is the cleaner comparison.

Concentration

Divide EPA + DHA by total oil to get concentration. 600 mg from 2,000 mg of oil is 30%; 1,100 mg from 2,000 mg is 55%.

Oil form

Concentrates are usually ethyl esters or re-esterified triglycerides. If the label doesn’t say, SuppScout shows “Not stated”.

Source and softgel

Fish, krill and algae are the main sources. For vegetarian or vegan needs, check both the oil source and the softgel material.

OMEGA-3

Fish Oil vs Algae

Source, EPA/DHA labels, dietary preferences and value.

Compare →

Sources & references

  1. Omega-3 Fatty Acids: Fact Sheet for Health Professionals. NIH Office of Dietary Supplements. ods.od.nih.govGovernment

SuppScout links to primary and authoritative sources wherever possible. See our editorial policy for how sources are selected and how corrections are handled.

This page is educational and is not medical advice. Talk to a healthcare professional before starting a supplement, especially if you have a medical condition, take medications, or are pregnant or breastfeeding.