Fish oil supplements provide EPA and DHA, the long-chain omega-3s linked to heart health, healthy triglyceride levels, and brain cell membrane structure. DHA is a major structural fat in brain cell membranes, making it essential. Most people do not eat the recommended two portions of oily fish per week, making supplements a practical alternative.
What to Look For
Registered nutritionist Karen Preece Smith recommends checking EPA and DHA amounts per capsule rather than total fish oil weight, and looking for third-party testing such as IFOS certification. Dark, airtight packaging with added vitamin E helps prevent oxidation. Quality matters because omega-3 fats are delicate and prone to oxidation, which reduces EPA and DHA content. Rhiannon Lambert advises paying attention to brand testing, freshness, and transparency instead of glossy labels or high-strength claims.
Sustainability and Safety
Sustainability is a concern; look for responsible sourcing and certifications like Friend of the Sea or MSC. Third-party batch testing for oxidation, contaminants, and heavy metals is important. Fish oil supplements are well tolerated if high quality. Those on blood thinners or approaching surgery should consult a GP. Staying under 2g to 3g daily without medical supervision is advised. Taking capsules with a meal improves absorption; splitting doses may help reduce inflammation markers in perimenopause or older individuals.
Best Overall: Bare Biology Life and Soul
Bare Biology Life and Soul High-Strength Omega-3 Daily Capsules offer 1,700mg omega-3 from small, wild-caught fish in triglyceride form. Each capsule contains 1,100mg EPA, 500mg DHA, and 100mg other omega-3s. The tinted glass jar protects against oxidation. It has IFOS 5-star rating per batch and certifications from Friend of the Sea and Marin Trust. Price: £28 from Healf.com. Subscription saves 15%.
Best Budget: Inessa Advanced Omega-3
Inessa Advanced Omega-3 provides 1,200mg omega-3 with 480mg EPA and 360mg DHA in triglyceride form. It is IFOS 5-star certified and uses a fish gelatin shell with added vitamin E. Sustainability certification is limited to Friend of the Sea. Price: £24.99 from Inessawellness.com.
Best for Easy Taking: Wiley's Finest Peak EPA
Wiley's Finest Peak EPA mini softgels are 55% smaller than regular capsules, containing 360mg EPA and 270mg DHA in ethyl ester form. They are MSC certified and made from Alaskan pollock byproduct-stream sourcing. Price: £26.50 from Healf.com. A liquid triglyceride version is also available.
Added Benefits: Artah Essential Omegas
Artah Essential Omegas delivers 1,500mg combined EPA and DHA (1,000mg EPA, 500mg DHA) in triglyceride form. It is Friend of the Sea certified and a B Corp. Added vitamin E prevents oxidation. Third-party testing is confirmed but not published online. Price: £32 from Facethefuture.co.uk.
For Purists: Wild Nutrition Pure Strength Omega-3
Wild Nutrition Pure Strength Omega-3 provides 800mg EPA and 400mg DHA per four capsules from sustainable Alaskan pollock. It is MSC certified, in triglyceride form, and independently tested for toxins. The brand is a B Corp. No IFOS certification is listed. Price: £38 from Wildnutrition.com.
Best for Travel: Reviveactive Omega Active
Reviveactive Omega Active offers 1,362mg omega-3 (756mg EPA, 504mg DHA) per two capsules. It uses a plant-based enteric coating and is Friend of the Sea certified. No independent purity or potency testing is disclosed. Added vitamin E prevents oxidation. Packaging is blister pack and cardboard. Price: £24.95 from Reviveactive.com.
Vegan Alternatives
For vegetarians and vegans, supplements with ALA from plant sources are available, but marine algae-based supplements provide EPA and DHA more effectively and avoid heavy metal risks.
