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Krill are microscopic crustaceans that live in the ocean, and most krill oil is harvested from Atlantic krill.

The oil is a great alternative to fish oil, providing all of the same benefits. It’s rich in omega-3 fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and may be able to deliver these health-boosting omega-3s more efficiently than fish oil (1).

Krill also contains astaxanthin, an antioxidant pigment that gives the oil its dark red color (1).

The benefits of EPA, DHA, and astaxanthin-rich krill oil include decreasing inflammation, improving blood lipid levels, and optimizing brain function. The oil may also play roles in arthritis management and the treatment of premenstrual syndrome (PMS) (1).

Krill oil may also be a more sustainable alternative to fish oil, as it’s estimated that there are 300–500 million tons of krill in the Atlantic at any given time — and only a small fraction of that amount is harvested (1).

In this article, the top krill oil supplements were selected based on the following criteria:

  • Third-party testing. Has the supplement been third-party tested and does it specify which lab(s) did the testing?
  • Omega-3 and astaxanthin content. Does it contain an adequate dose of these substances?
  • Quality of ingredients. Does it contain additional oils, fillers, or additives?

Here are the 11 best krill oil supplements of 2020.

A note on price

General price ranges with dollar signs ($ to $$$) are indicated below. One dollar sign means the product is rather affordable, whereas three dollar signs indicate a higher price range.

Generally, prices range from $0.15–$1.62 per serving, or $12.95–$49 per container, though this may vary depending on where you shop.

Note that the serving sizes vary between 1–3 capsules daily.

Pricing guide

  • $ = under $0.50 per serving
  • $$ = $0.50–$1 per serving
  • $$$ = over $1 per serving
Healthline

NutriGold Krill Oil Gold

Price: $$

This krill oil has been tested by International Krill Oil Standards (IKOS), a third-party testing organization that tests for the nutrient and antioxidant content of krill oil products, ingredient quality, presence of contaminants, and freshness of the product.

It’s made with krill from a Global Organization for EPA and DHA Omega-3s (GOED)-approved source.

These third-party testing organizations test for the nutrient and antioxidant content of krill oil products, ingredient quality, presence of contaminants, and freshness of the product.

In addition to sustainably sourced krill oil, it only contains the ingredients needed to make the softgel capsule.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 240 mg
  • Astaxanthin: 200 mcg

Shop for NutriGold Krill Oil Gold online.

Viva Naturals Antarctic Krill Oil

Price: $$$

This supplement has been third-party tested by IKOS and contains one of the highest doses of omega-3s and astaxanthin of any product on this list. It also only contains the gelatin necessary to make the softgel capsule, as well as sustainably sourced Atlantic krill oil.

A good krill oil supplement should contain at least 200 mg of omega-3 fatty acids, and this product surpasses that mark while providing a hefty dose of astaxanthin.

Each serving contains:

  • Krill oil: 1,250 mg
  • Omega-3 fatty acids: 300 mg
  • Astaxanthin: 1,600 mcg

Shop for Viva Naturals Antarctic Krill Oil online.

Price: $$

This krill oil is free of soy and fillers and contains only three ingredients in addition to high quality krill oil — the ingredients in the softgel capsule.

In fact, the krill used in this product has been certified by the Marine Stewardship Council (MSC), which ensures that sustainable harvesting practices are used. It has also been third-party lab tested by IKOS.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 240 mg
  • Astaxanthin: 500 mcg

Shop for Sports Research Antarctic Krill Oil online.

Price: $$

Kiva’s krill oil has undergone third-party testing by IKOS and contains only four ingredients in addition to krill oil — the three ingredients in the softgel capsule and vanillin to improve the taste.

In addition, the krill used to make this product was wild-caught in the Atlantic and certified sustainable by the MSC.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 280 mg
  • Astaxanthin: 102 mcg

Shop for Kiva Antarctic Krill Oil online.

Price: $

Kirkland Signature is a store brand associated with Costco Wholesale Corporation, but you can also purchase these products online. This supplement has been verified by United States Pharmacopeia (USP), a trusted name in third-party supplement testing.

The krill used in this supplement is also Friend of the Sea-certified. Additionally, it only contains the softgel capsule ingredients and vanillin for flavoring, so it’s free of fillers.

Each serving contains:

  • Krill oil: 500 mg
  • Omega-3 fatty acids: 120 mg
  • Astaxanthin: 150 mcg

Shop for Kirkland Signature Krill Oil online.

Price: $$

This product is one of the most potent krill oil supplements available — containing higher doses of omega-3s and astaxanthin than several other products on this list. It only contains the ingredients in the softgel capsule in addition to high quality krill oil.

It’s also certified sustainable by Friend of the Sea. Although it has been third-party tested, the manufacturer doesn’t disclose who performed this testing.

Each serving contains:

  • Krill oil: 1,250 mg
  • Omega-3 fatty acids: 601 mg
  • Astaxanthin: 1,700 mcg

Shop for NatureMyst SuperiorRed Krill Oil online.

Price: $

This krill oil has been third-party tested and only contains the softgel capsule ingredients plus ethylvanillin to improve the flavor.

Although the third-party testing company is not specified, this supplement is manufactured in a Good Manufacturing Practices (GMP)-certified facility, which ensures that the manufacturing plant meets Food and Drug Administration (FDA) requirements.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 240 mg
  • Astaxanthin: 200 mcg

Shop for Nutricost Krill Oil online.

Price: $$

This krill oil is made with Friend-of-the-Sea-certified sustainable krill oil. Friend of the Sea is a project of the World Sustainability Organization that certifies and promotes seafood from sustainable fisheries and sustainable aquaculture.

In addition, it contains only the softgel capsule ingredients, plus sorbitol and ethylvanillin to enhance the taste.

Sorbitol is a sugar alcohol that tastes sweet, but it can irritate people with irritable bowel syndrome (IBS). If you have IBS, you may want to choose a different krill oil product (2).

Although it has undergone third-party testing, the manufacturer does not disclose the company that completed this testing.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 230 mg
  • Astaxanthin: 100 mcg

Shop for DailyNutra Neptune Krill Oil online.

Price: $

This krill oil boasts brain-boosting benefits due to its omega-3 fatty acid content. It has been subjected to third-party testing, but the testing company is not disclosed.

It also contains rice powder as a filler. Although rice powder is not particularly harmful, most of the other products on this list don’t contain any fillers.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 200 mg
  • Astaxanthin: 1,500 mcg

Shop for Mental Refreshment Krill Oil Maximum Strength online.

Price: $

This non-GMO, soy- and gluten-free krill oil supplement is made with high quality ingredients. In addition to Atlantic krill, it contains only the softgel capsule ingredients and ethylvanillin for flavor.

Although this product has undergone third-party testing for heavy metals, the manufacturer doesn’t disclose which company performed the testing.

Each serving contains:

  • Krill oil: 1,000 mg
  • Omega-3 fatty acids: 200 mg
  • Astaxanthin: 200 mcg

Shop for Bronson Antarctic Krill Oil online.

Price: $

This krill oil supplement has undergone third-party testing to ensure quality and, in addition to krill oil, contains only the ingredients in the softgel capsule. However, the manufacturer doesn’t share which company completed the third-party testing.

Each serving of this product contains only 500 mg of krill oil and 60 mg of omega-3s, whereas most other krill oil supplements contain 1,000 mg of krill oil per serving and at least 100 mg of omega-3s.

If you choose this product, you’ll want to make sure you’re also eating foods rich in omega-3 fatty acids, like fatty fish and flax seeds (3).

Each serving contains:

  • Krill oil: 500 mg
  • Omega-3 fatty acids: 60 mg
  • Astaxanthin: 200 mcg

Shop for USANutra Antarctic Krill Oil online.

The most important consideration in choosing a krill oil supplement is whether it has undergone third-party testing. Supplements are not regulated as strictly as pharmaceuticals, and the Food and Drug Administration (FDA) typically doesn’t get involved until after there is a problem.

Third-party testing is a voluntary service that a supplement company must pay for, but it ensures that the supplement contains what the label claims it does. All of the products on this list have undergone third-party testing to some degree.

The best supplement companies will also disclose which third-party company or companies conducted the testing and allow you to view the reports on their website. IKOS is a common third-party testing company for krill.

Next, you should look for a krill oil supplement that contains at least 100–200 mg of omega-3s per serving, as most of the health benefits of krill oil are derived from their omega-3 fatty acid content.

That said, it’s important to realize that the products in this article contain capsules of varying sizes and concentrations of omega-3s.

Finally, you should choose one that’s free of fillers or extra ingredients. The majority of products on this list contain only the ingredients needed to make the softgel capsule and a flavor extract to improve the taste.

Useful supplement shopping guides

Check out these two articles to help you make supplement shopping a breeze:

Healthline

Krill oil is a promising alternative to fish oil that’s just as rich in omega-3 fatty acids, more sustainable, and potentially more efficient at delivering omega-3s to your body.

It can help with heart health, brain health, and inflammation (1).

The best krill oil supplements are those that have undergone third-party lab testing, contain at least 100–200 mg of omega-3 fatty acids, and are free of unnecessary ingredients or fillers.