EPA and DHA: the real benchmarks
An omega 3 product is judged on its milligrams of EPA and DHA per dose, not on the volume of oil. The EU claims themselves depend on precise intakes: an effect on heart function from 250 mg/day of EPA+DHA, and on the brain and vision from 250 mg/day of DHA.
The chemical forms
Concentrated oils may be presented as natural triglycerides (TG), re-esterified triglycerides (rTG) or ethyl esters (EE). This is a factual comparison criterion stated by the manufacturers. Krill delivers omega 3 in phospholipid form.
Origin and quality
Fish oils (often certified as sustainably fished), krill, or Schizochytrium algal oils for a vegan option (DHA, sometimes EPA). Many manufacturers publish the total oxidation value (TOTOX); this figure appears on the product sheets whenever it is supplied.
How to choose
Look at the mg of EPA and DHA per dose, the chemical form, the origin (fish, krill, algae) and any certifications. The Omega 3 hub lists comparable products.
