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Fish & Nutritional Oils

40 results

Products


What are fish oils and nutritional oils?

Fish oil supplies the long chain omega-3 fats EPA and DHA, the forms your body can use directly. These come from oily fish such as salmon, sardines and mackerel. Plant oils including flaxseed and chia supply a shorter omega-3 called ALA, which the body converts to EPA and DHA only inefficiently, so the two are not interchangeable. Algae oil is the exception, supplying EPA and DHA directly without fish.

The figure to read on the label is not the capsule size but the EPA and DHA content. A 1,000 mg fish oil capsule commonly contains only about 300 mg of combined EPA and DHA, with the rest being other fats. Concentrated products deliver far more per capsule, which is why comparing on capsule weight alone is misleading.

Why shop fish and nutritional oils at Supplement Mart?

  • 68 fish and nutritional oils in stock, including concentrated and algae based options
  • 58 stores nationwide, with click and collect available
  • Free shipping Australia-wide on orders over $150, with no surcharges
  • East and west coast dispatch on orders placed before 2pm on weekdays
  • Supplement Mart Rewards, earning points on every dollar spent
  • An in-house nutritionist you can actually ask a question

How they are usually used

Taken daily with a meal, which helps absorption and reduces the aftertaste. Keeping them in the fridge limits the fishy repeat that puts people off. Oils oxidise over time, so check the expiry and avoid anything that smells strongly rancid. Supplements are not a substitute for medical advice. If you are pregnant or breastfeeding, take prescription medication, or are managing a health condition, check with your doctor or pharmacist before starting something new.

Popular right now

Looking for a proven place to start? These are the ones moving fastest in this range:

Brands in this range include Herbs of Gold, Solutions 4 Health, Pillar Performance, Switch Nutrition, ATP Science and Hab Shifa.

Shoppers browsing Fish & Nutritional Oils also look at Beauty & Skin, Brain Health, Essentials, Health Supplements, Health, Wellness & Immunity and Healthy Ageing.

Frequently asked questions

How much EPA and DHA should I look for?

Read the combined EPA and DHA figure rather than the capsule weight. A standard 1,000 mg capsule often carries only around 300 mg of actual omega-3. Concentrated products can supply two or three times that per capsule, which usually works out cheaper per gram of omega-3 even if the bottle costs more.

Is krill oil better than fish oil?

Krill oil delivers omega-3 bound to phospholipids, which some research suggests absorbs slightly better. The catch is that krill capsules usually contain far less EPA and DHA per capsule and cost considerably more. On a per milligram of omega-3 basis, standard fish oil is normally better value.

Can vegans get EPA and DHA?

Yes, from algae oil. Algae is where fish get their omega-3 in the first place, so algae oil supplies EPA and DHA directly rather than relying on conversion. Flaxseed and chia provide ALA only, and the body converts very little of it, so they are not an equivalent substitute.

Why do fish oil capsules repeat on me?

Usually because they are taken on an empty stomach, or the oil has begun to oxidise. Taking them with a meal and storing them in the fridge both help. Enteric coated capsules are designed to pass the stomach before dissolving, which solves it for most people.

How do I know if a fish oil has gone off?

Smell it. Fresh fish oil smells mild; rancid oil smells sharp and unpleasant, and oxidised oil is not something you want to be taking. Check expiry dates, buy a size you will finish, and store it cool and out of direct light.

Sources

Last reviewed: 10 October 2026