Omega 3 Supplements
Omega 3 supplements made in the UK: fish oil with EPA and DHA, DHA softgels, krill oil and flaxseed oil. EPA and DHA contribute to the normal function of the heart.
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Choosing an omega 3 supplement
Omega 3 from the sources that matter: fish oil for EPA and DHA, a DHA-led softgel, krill oil, and flaxseed for a plant source of ALA. EPA and DHA contribute to the normal function of the heart; DHA contributes to the maintenance of normal brain function and normal vision.
The four products compared
| Product | Source | What it provides | Chosen for |
|---|---|---|---|
| Omega 3 fish oil capsules | Fish oil | EPA and DHA | The general-purpose omega 3, in 90 or 250 capsules |
| DHA softgels | Fish oil, DHA-led | 200 mg DHA per softgel | People who want DHA specifically, including during pregnancy under guidance |
| Krill oil capsules | Krill | EPA and DHA as phospholipids, with astaxanthin | People who prefer the phospholipid form |
| Flaxseed oil capsules | Flaxseed | ALA, the plant omega 3 | Vegans and vegetarians; the body converts only a small share of ALA to EPA and DHA |
How to choose
If you eat oily fish twice a week you may not need any of these. If you do not, fish oil is the usual choice, and the guide Fish oil, krill oil or algal oil? compares the sources honestly. How long the change takes to show in blood and tissue is here: How long does omega 3 take to work? Take omega 3 with a meal that contains some fat.
All products are made in the UK to GMP standards and ship worldwide from the UK, with duties and taxes shown at checkout. If you take prescribed medicines, are pregnant or breastfeeding, or have a diagnosed condition, talk to your GP or pharmacist first. Not sure which fits? Ask Nutri365, the Nutri Tailor AI health expert.
Written by Nutri Tailor from the Health Reference Library. Last checked 6 September 2026. General information, not personal advice.