Supplement labels
How to compare vegan omega-3: EPA, DHA and serving size
Why total oil weight is not the same as EPA and DHA, and what to look for when comparing algae-based supplements.
By MilesKay ·
Oil weight is not the same as EPA plus DHA
When comparing omega-3 supplements, look for the stated EPA and DHA amounts per serving, not just the total weight of fish oil or algal oil. The oil contains more than those two fatty acids, so a headline oil amount cannot be read as an equivalent EPA-and-DHA amount.
Check how many capsules make one serving. A per-capsule figure and a per-daily-serving figure can look very different even when the formulation is similar. Compare products on the same basis before deciding which offers the composition you are looking for.
ALA, EPA and DHA are different omega-3s
ALA, EPA and DHA are types of omega-3 fatty acids. ALA occurs in plant foods such as flaxseed; fish oils supply EPA and DHA. Algal oils provide a vegetarian source of DHA, and some formulations contain EPA too. Do not assume every algae-based product supplies both.
An ALA-containing plant oil should not be compared as though its stated weight were the same quantity of EPA or DHA. Identify which fatty acids the label actually declares. If it only gives “omega-3” or total oil weight, ask for the detailed composition.
A label checklist for vegan omega-3
Read the full ingredient list as well as the front label. A formula may include other nutrients that matter when you are already taking supplements.
- Identify the source: algal oil, fish oil or a plant oil containing ALA.
- Find the separate EPA and DHA amounts, if declared, per recommended serving.
- Check the number of capsules in that serving and servings in the bottle.
- Check the capsule shell and all added ingredients if you need a vegan product.
- Review any added vitamins alongside the supplements you already take.
- Compare cost per labelled serving; only compare cost per EPA-and-DHA quantity where those amounts are documented.
There is no universal dose for every buyer
This guide does not prescribe an omega-3 dose or promise a health outcome. Individual circumstances, diet, medication and the product formulation all matter. Follow the current product directions and ask a pharmacist or clinician if you are unsure about suitability, particularly if you take medication or are pregnant.
Terms such as “high strength”, “brain support” or “premium” are not replacements for a clear composition. A good comparison starts with the actual labelled amounts and the evidence for any claim, rather than a longest-ingredient-list contest.
MilesKay’s supplement collection includes a vegan omega-3 option. Check its current label for the oil source, EPA and DHA breakdown, other ingredients and serving directions. If a quantity you need is not shown, contact admin@mileskay.co.uk rather than estimating it from the bottle size.
Sources & further reading
- NIH Office of Dietary Supplements: Omega-3 fatty acids
- NCCIH: Omega-3 supplements — what you need to know
General buying information, not personalised medical advice. Product labels and individual clinical advice take priority.
