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What’s the Best Krill Oil Supplement?
Reviews & Buyer’s Guide

Isaac Robertson
Published by Isaac Robertson
Fact checked by Donald Christman, BHSc FACT CHECKED
Last updated: November 10, 2021

As a kid, I was always preached to about the benefits of fish oil. And I’ve pretty much taken it since I was about eight years old.

But in recent years, I’ve decided to take krill oil supplements more often.


On the one hand, it’s for environmental and sustainability reasons. But there is also plenty of evidence that it’s a safer source of omega-3 fatty acids because of lower levels of heavy metals.

Basically, fewer risks of side effects.

So, we went and researched some of the most popular and best krill oils available.

Our Top Krill Oil Supplements

1 - Onnit Krill Oil (Editor's Choice)

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Onnit is another product we found to have just the right amount of fatty acids per serving.

The capsules are small and easy to swallow, with many folks saying they don’t get that common fishy aftertaste.

During high-intensity training phases, you may want to take an extra capsule.

Check out our full ONNIT Krill Oil review here.

Amount of krill oil: 1,000 mg

  • Contains added astaxanthin that may help with high cholesterol
  • Sustainably sourced from Antarctic waters
  • Many reviews say it doesn’t leave a fishy aftertaste
  • Athletes may require a higher dose of omega-3s

2 - Sports Research Antarctic Krill Oil

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For a slightly larger serving size of omega-3 fatty acids, Sports Research may have you covered.

It’s more suitable for athletes, or anyone who may have severe symptoms of joint problems.

Amount of krill oil: 1,250 mg

  • Claims to contain no artificial additives or fillers
  • Comes in easy to swallow softgels
  • Sustainably sourced from Antarctic krill
  • Some reports of fishy burps if you don’t take them immediately before food

3 - Dr. Mercola Antarctic Krill Oil

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This product doesn’t just claim to be from a sustainable source of krill, but it also has an MSC certificate of sustainability for all the ingredients.

The per serving size is easily adapted for performance athletes by adding an extra capsule. And we liked that there didn’t seem to be a fishy aftertaste.

Amount of krill oil: 1,000 mg

  • Contains astaxanthin, which may support cardiovascular health
  • Seems to not leave you with fishy burps
  • Has an certificate of sustainability
  • Keep in mind this is a product that combines krill and fish oil

4 - Bronson Antarctic Krill Oil

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While omega-3 fatty acids from krill are generally less likely to contain heavy metal, it’s still nice to have the peace of mind of some independent testing and verification.

The per serving size is fine for average daily use. And what’s most impressive is a 1-year guarantee, which we’ve never seen before.

Amount of krill oil: 1,000mg

  • Independently tested for heavy metals content
  • Small softgel capsules seem to be easy to swallow
  • Has an impressive 1-year money-back guarantee
  • Some people found it to have a fishy aftertaste

5 - MegaRed Omega-3 Krill Oil

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MegaRed krill oil supplements come to you from one of the leading brands when it comes to all types of Omega products.

What many folks like about it is the purification process, which apparently removes some impurities and salts.

Amount of krill oil: 1,000mg

  • Claims to be three times purer by removing salts
  • Small capsules are easy to swallow
  • Created by one of the leading Omega-3 oil brands
  • Some better bulk-buy options would be great

6 - Viva Naturals Antarctic Krill Oil

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Another slightly larger serving size comes from Viva Naturals. It also seems to be one of the krill oils recommended for folks with joint problems, as there are quite a few positive reviews.

While we did find that there were practically no fishy burps, the capsule might be a bit awkward to swallow for some.

Amount of krill oil: 1,250mg

  • Many positive reviews about it helping with joint health
  • Capsules claim to be designed to reduce fish burps
  • Claims to have higher strength phospholipids making them easier to absorb
  • Some people found the shape a little difficult to swallow

7 - NatureMyst Krill Oil

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Here’s another krill oil that we noted a lot of folks saying that they were easy to swallow because of their small size and shape.

More importantly, it’s another product that is independently tested to see if it contains harmful toxins.

Amount of krill oil: 1,250mg

  • Easy to swallow size without getting stuck in your throat
  • Third-party tested for purity and quality
  • Seems to have a stronger dose of DHA for heart health and blood pressure
  • Some people reviewed it as having a slightly fishy aftertaste

8 - Zenith Labs Omega 3,7,9 + Krill

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Of all the krill oil supplements we tested, this is the one we found to be the best formulated one.

By combining omega-3 fatty acids from krill and fish, the product claims to be able to provide your body with a better range of Omega 3, 7, and 9 for brain, heart, and skin health.

The serving size is just right for the average adult. And you should find it easy to adjust for different training periods.

Amount of krill oil: 1,500mg

  • Provides a balanced Omega profile of 3, 7, and 9
  • Combines krill and fish oil to contain a wider range of micronutrients
  • Claims to have added vitamin E for improved skin health
  • Has some added CoQ10 to help your body detox
  • It may have a slight aftertaste that could be avoided by taking the product with food

9 - Bulksupplements Krill Oil

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Even in the smallest package, it’s hard to find a better price when you work it out on the basis of omega-3 fatty acids per serving.

But once you add the large bulk-order options in, then you could save even more.

Amount of krill oil: 1,000mg

  • Hard to beat on a price per serving basis
  • Contains no unnecessary fillers or common allergens
  • Available in large bulk-order bags
  • The amount of DHA and EPA is a bit on the low side compared to other products

10 - Prowise Superba Krill Oil


These Prowise Superba krill oil supplements have a lot of reviews about one of the main benefits being a lack of aftertaste.

The serving size isn’t that high, but at this price, you could easily increase the dose.

Superba also claims that it contains only natural ingredients with no dodgy additives.

Amount of krill oil: 1,000mg

  • ProsClaims to use eco harvesting methods for minimal environmental impact
  • Positive reports about being easy to swallow with no aftertaste
  • Uses only natural ingredients with non-GMO certificate
  • EPA and DHA amount could be increased a bit

Krill Oil Buyer’s Guide

hand holding atm card

Before you just start taking krill oil capsules, I would suggest that you follow these three tips that we used in our research.

1 - Compare Based On Dose

Depending on whether you’re a high-performance athlete, or just want the general health benefit from omega-3 fatty acid, it’s important to start with your intake per day.

For most men and women, a 1,000 mg capsule will be a good starting point [1].
So it’s important to then look at the serving size on each product to better compare the price.
Bonus tip: try to get a product that has two capsules per serving; this may allow easier dose increases.

2 - Source And Purity

Pretty much every krill oil supplement we saw is sourced from Antarctic waters, where krill seems to be most abundant. But the other advantage is that it should reduce the risks of heavy metals exposure and associated side effects [2].

Because they are at the base of the food chain, krill do not accumulate as many potentially harmful toxins and heavy metals as other marine life higher in the food chain. - Dennis A. Goodman, MD

Next, you want to make sure that the omega-3 fatty acids are purified without the use of chemicals. This should increase the quality of the DHA and EPA in the products, which could make it easier to absorb into your blood-stream.

3 - Avoiding Fishy Burps

While there are many benefits of krill oil supplements, including lower cholesterol and increased brain function [3], you may need to factor in the fishy burps.

This is very much the same as with fish oil supplements. But there are some products that manage to create capsules that release the omega-3 fatty acids more slowly.

It also generally should help to take them just before a meal.


What Is Krill Oil Good For?

Krill oil is good for your cardiovascular health as well as brain function. It has been shown to improve heart health and blood pressure by reducing the effects of harmful cholesterol levels in the blood.

Is Krill Oil Bad for Your Liver?

No, krill oil isn’t bad for your liver at normal daily dosage, unless you have some other underlying liver problems. Krill oils, just like fish oil supplements, increase your body’s fat intake, but at low doses, this shouldn’t have an effect on fat retention in liver cells.

For us, the best krill oil available is the ONNIT Krill Oil recommended above. It has the right combination of krill and fish oil ingredients to provide a broad range of Omega acids.

Taking krill oil capsules is very easy, as the shape and size make them easy to swallow.

Purchase yours today and then report back to us in a couple of weeks on how they may have improved your health.

Our #1 Recommendation

Onnit Krill Oil

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1,000 mg
Ingredient Quality
Overall Score 5.0
  • Contains added astaxanthin that may help with high cholesterol
  • Sustainably sourced from Antarctic waters
  • Many reviews say it doesn’t leave a fishy aftertaste
  • Athletes may require a higher dose of omega-3s

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