Frequently Asked Questions
What is Omega-3?
Omega-3 is a group of essential fatty acids your body can't make efficiently on its own, so it needs to come from your diet. The three main types are EPA and DHA, found in oily fish, and ALA, found in plant sources like flaxseed.
Is Omega-3 in fish oil?
Yes fish oil is one of the richest natural sources of the omega-3s EPA and DHA. It's pressed from the flesh of oily fish such as sardines, mackerel and anchovies, which is why fish oil is the most popular way to top up your intake.
What is Omega-3 good for?
Omega-3s EPA and DHA contribute to the normal function of the heart. DHA also contributes to the maintenance of normal brain function and normal vision, and omega-3 is widely taken to support joint health too.
What are the benefits of taking omega-3?
Omega-3 fatty acids EPA and DHA contribute to the normal function of the heart, while DHA also contributes to the maintenance of normal brain function and normal vision. Research shows omega-3 plays a key role in maintaining joint health too, which is why fish oil is one of the most widely taken supplements in the UK. Because our bodies can't make these fats efficiently, they need to come from oily fish or a good quality supplement.
Which Omega-3 supplement is right for me?
Match it to your goal. For everyday heart support, our Omega-3 Fish Oil 1000mg in the superior Triglyceride form is the natural starting point. If brain function or vision is your focus, choose a formula with more DHA our High EPA/DHA or premium Ultra EPA/DHA, which packs 630mg of omega-3 into each capsule. Icelandic Cod Liver Oil brings vitamins A and D alongside its omega-3s, MSC-certified krill oil is the premium sustainable choice, and Vegetarian Flaxseed Oil covers those avoiding fish.
What's the difference between EPA and DHA?
EPA and DHA are the two key long-chain omega-3 fatty acids found in oily fish, and they work as a team. Together they contribute to the normal function of the heart, while DHA is particularly important for maintaining normal brain function and vision. We state the exact EPA and DHA content of every product, so you can compare strengths properly rather than judging by the size of the capsule.
When should I take omega-3 supplements?
Take your omega-3 with a meal - you need a little dietary fat to absorb the fat in the supplement, so alongside breakfast, lunch or dinner works far better than on an empty stomach. The time of day doesn't matter much; what counts is taking it consistently as part of your daily routine.
Can I get omega-3 if I'm vegetarian or vegan?
Yes - our Vegetarian Flaxseed Oil capsules are a very popular plant-based source of omega-3. Flaxseed is high in alpha linolenic acid (ALA), an essential omega-3 fatty acid which the body can convert, in part, into EPA and DHA. It's a premium vegetarian and vegan-friendly formulation, and ALA itself contributes to the maintenance of normal blood cholesterol levels.
What's the difference between fish oil, cod liver oil and krill oil?
All three are rich sources of omega-3s EPA and DHA - the difference is where they come from and what else they bring. Fish oil is pressed from the flesh of oily fish and offers the highest concentrations of EPA and DHA. Cod liver oil comes from the liver, so it naturally provides vitamins A and D alongside its omega-3s. Krill oil is sourced from sustainably harvested Antarctic krill - ours is Marine Stewardship Council certified - in easy-to-swallow, vanilla-flavoured capsules.
Why shop for Omega-3 Supplements at Just Vitamins?
We offer multiple strengths to suit different health goals and budgets from everyday fish oil in the body-friendly Triglyceride form, through high-strength EPA/DHA formulas for heart and brain support, to premium Ultra concentrations, cod liver oil and MSC-certified krill. Our oils are sustainably sourced and rigorously tested for purity, and we print the exact EPA and DHA content on every label, so you can compare like for like rather than judging by capsule size.