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11 Best Omega-3 Supplements UK 2025
When it comes to the most beneficial vitamins and minerals, you’ll likely find the best omega-3 supplements at the top of any nutritionist’s list. But does everyone need them, and is this something you personally need to invest in?
“Omega-3s are essential polyunsaturated fatty acids, meaning that the body cannot produce them, so they must be acquired from the diet or supplements,” explains Lola Biggs, Registered Dietitian at Together Health. “The body uses these essential fats to construct specific cells, such as those that make up membranes, create hormones, and are crucial for overall brain, eye, and heart health”.
While you can get the recommended amount of fish oil from eating just one portion of oily fish a week, Lola says that statistics show omega-3 intake to be low. In fact, only a quarter of the UK population is believed to consume oily fish, which falls below the recommended levels. Sounds familiar? If you feel like you fall into this category or are vegan, you could probably benefit from adding it in supplement form. But, if you love a fish supper or dining out on sushi, this is one supplement you probably don’t need.
So, to save you scouring the web for suitable omega-3 supplements, we’ve rounded up the very best — nearly all tried and tested by GLAMOUR editors, because we wouldn’t recommend anything to you that we wouldn’t recommend to a friend. And, so you’re fully informed, we’ve also asked industry experts for answers to all your FAQs on the best fish oil supplements.
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How we tested the best omega-3 supplements:
The Glamour team are a hard-working bunch, often using their evenings and weekends to moonlight as beauty and wellness testers. We’ve spent the last few months trialling a host of the best sleep supplements, Lion’s Mane supplements, magnesium supplements and green powders to see which actually make a difference to our sleep, energy levels and general wellbeing.
Both I, Sophie Donovan, and freelancer contributor Cat Hufton tested the omega-3 supplement in this round up — plus a host more we didn’t love or openly praise — for a minimum of four weeks each. At the end of their trial period, we rated them against the following criteria:
- Ease of use — Were the capsules easy to swallow? Did the powder mix well with water?
- Efficacy — How long into the four weeks did I notice a difference, if any?
- Taste — On a scale of one to five, how pleasurable was the taste?
- Value for money — Would I be happy to commit to the weekly, monthly or bi-monthly spend?
And yes, only the top-performing made it into our edit below.
Why you can trust me: Senior Commerce Writer, Sophie Donovan
I’ve been collating wellness guides for the past two years — one year in a previous job, and for 13 months at Glamour. During that time, I’ve reviewed countless sexual wellness new launches, including sex toys, condoms and lube, as well as supplements and sleep aids such as Loop Earplugs.
But to ensure I am an authority on all things wellness, I’ve attended countless press days, spoken to various experts, from nutritionists to women’s health experts and sex educators, plus have personally tested hundreds of products. As a result, I’m clued up on the best emerging brands, new releases and can confidently advise on which products are worth your money.
By fully immersing myself in the industry, I can confidently say I’ve seen countless trends come and go — for example, we’ve been all about gut health and cute clit suckers in 2025.
Why you can trust me: Freelance Contributer, Cat Hufton
I’m an experienced lifestyle journalist who has tested hundreds of products in my quest to find the best products worthy of your hard-earned money. I became particularly interested in wellness and health products after having children seven years ago, and I needed a little extra helping hand in feeling my best.
As such, I’ve spoken to countless industry experts, tested a wide variety of supplements and wellness products, and become pretty astute at knowing what really makes a difference.
Disclaimer: Keep in mind that this article isn’t a substitute for professional medical advice, and our recommendations won’t replace a healthy lifestyle and balanced diet.
What is omega-3, and what are the benefits?
“Omega-3 fats are long-chain, polyunsaturated fats that are important to our health and wellbeing,” says nutritionist and founder of Artah Health, Rhian Stephenson. “They’re referred to as our ‘essential’ fatty acids because our bodies aren’t able to produce them, so they must come from our diet. Fish oil is the best source of omega-3 fats.”
There are three main types of omega-3s: ALA (alpha-linolenic acid), EPA (eicosapentaenoic acid), and DHA (docosahexaenoic acid). “EPA and DHA are found in higher concentration in our eyes, brain, and reproductive system, and are also essential for the health of our hormones, skin, immune system, cardiovascular system, nervous system and are also thought to lower our risk of cancer and heart disease,” details Stephenson.
