Look past “fish oil”
Compare EPA and DHA on the label. A 1,000 mg fish-oil capsule does not necessarily contain 1,000 mg of EPA and DHA.
Follow the sourceOPENING THE FIELD GUIDE
Omega-3s are a family of fats. Fish-oil labels commonly list EPA and DHA; the total oil weight can be much larger than the amount of these omega-3s.
Compare EPA and DHA on the label. A 1,000 mg fish-oil capsule does not necessarily contain 1,000 mg of EPA and DHA.
Follow the sourceALA, EPA, and DHA are different omega-3s. The body converts only small amounts of ALA to EPA and DHA.
Follow the sourceOmega-3s have structural roles in cells. This does not establish a universal benefit from supplementation.
Follow the sourceThe benefits of eating fish and the effects of taking fish-oil supplements are not interchangeable. Clinical outcomes depend on the context.
Check fish or other allergen sources. Talk to a pharmacist about medicines, including anticoagulants, and follow the specific product warnings.
Compare evidence for the exact formulation. Brand age and marketing claims do not earn quality points.