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We reviewed dozens of krill oil supplements to discover the 5 best options for joint pain, leg and foot swelling, and heart health.

As we reviewed each krill oil supplement, we considered five important criteria:

1. Sourced from the Antarctic Ocean: If krill is harvested from polluted waters, those contaminants can make their way into the final krill oil supplement. This highlights the importance of choosing krill oil that comes from a pure, unpolluted source like the Antarctic Ocean—one of the cleanest and most sustainable sources of krill.

2. Potent Omega-3 Content: Taking the correct krill oil dosage is key. According to scientific research, effective dosages of krill oil have ranged from 500 mg/day to 4 g/day. We recommend starting with doses on the lower end of the spectrum (500-1,000 mg) and adjusting based on personal health objectives and healthcare provider guidance. 

3. Astaxanthin Levels: This powerful antioxidant not only gives krill oil its distinctive red color but also offers various health benefits, including supporting skin health and providing additional anti-inflammatory effects.

4. Small, Easy-to-Take Softgel: Krill oil can come in various forms, including softgels both large and small. We prefer krill oil softgels that are on the smaller side, as they are easier to swallow. 

5. Third-Party Testing: In a world saturated with supplements, buying from a brand that believes in quality and transparency is essential. That said, when purchasing krill oil, ensure it’s produced in the USA in a certified GMP (Good Manufacturing Practice) facility and is third-party tested for safety, purity, and potency. 

Only Available ONLINE

500 mg krill oil

Sourced from the Antarctic Ocean

Zero fillers

No fishy aftertaste

Much smaller softgel than other krill oil supplements

1,300+ five-star reviews

Helps reduce swelling in the legs, ankles, and feet

Improves joint health and mobility

Supports heart health and eye health

Non-GMO

Third-party tested

cGMP Compliant

Made in the USA

Affordable price

365-day money-back guarantee

It’s true, this small softgel does offer an ocean of benefits. Over 1,300 5-star reviews have proclaimed that ankle swelling has “disappeared,” knee pain “is gone,” and cholesterol and blood pressure numbers have improved. One NativePath customer even called it their “miracle pill.” Each pea-sized softgel features 500 mg of krill oil sourced directly from the clean, isolated waters of the Antarctic Ocean—and is third-party tested for purity, potency, and safety. For these reasons, NativePath rightfully secured the #1 spot on our list of Best Krill Oil Supplements of 2025. Plus, with their unmatched 365-day money-back guarantee, you can try NativePath Krill Oil at no risk to you!

Try it risk-free. No strings attached. 

“Antarctic Krill Oil took care of ankle swelling just one week after beginning taking am and pm doses. So easy.”

—Judy O., NativePath Verified Customer

“I had swelling in my feet & legs. Wanted me to wear Compression socks. After taking Krill Oil the swelling is gone & I can wear alot of my shoes again. Wonderful.”

—Helen B., NativePath Verified Customer

Less astaxanthin than #1 pick

500 mg krill oil

Sourced from the Antarctic Ocean

Limited guarantee policy (45 days)

Zero fillers

No fishy aftertaste

IGEN™ Non-GMO Tested

cGMP Compliant

Made in the USA

Securing second place are the Omega-3 Krill Oil Mini-Gels from Sports Research. The krill oil in these softgels comes from Superba2™—a Norwegian brand that focuses on sustainable harvesting practices. Each softgel boasts 500 mg of krill oil, sourced straight from the Antarctic Ocean. The main difference we saw between this brand and our #1 pick is the lower dose of astaxanthin per softgel—50 mcg versus 200 mcg in the NativePath Krill Oil. Astaxanthin is a potent antioxidant that helps combat oxidative stress and inflammation, and has been said to be significantly stronger than other antioxidants like vitamins C and E.

Need to take 2 softgels per serving

1,000 mg krill oil

Sourced from the Antarctic Ocean

Returns are not accepted

Zero fillers

All supplements are final sale

No fishy aftertaste

Third-party tested

Contains natural vanilla 

Founded by Jocko Willink, a former Navy Seal, Jocko Fuel has a mission to fuel people’s progress with clean, superior fuel for the body and mind. Each SuperKrill softgel has 500 mg of krill oil—sourced from the chilly waters of the Antarctic. What sets this krill oil supplement apart is the addition of natural vanilla, which makes for a sweeter-smelling experience. However, it should be noted that, unlike traditional fish oil, krill oil has zero fishy aftertaste and only a slight fishy smell, so the inclusion of vanilla isn’t absolutely necessary. Although reasonably priced, all Jocko supplements are final sale, meaning that you cannot return products or get a refund.

Comes in a capsule instead of a softgel

1,000 mg krill oil

Sourced from the Antarctic Ocean

Includes 4 other ingredients

Zero fillers

Need to take 2 capsules per serving

No fishy aftertaste

Capsule is made from the gelatin of tilapia

Third-party tested

Non-GMO

Founded by Dr. Joseph Mercola, a board-certified family medicine osteopathic physician, Dr. Mercola Antarctic Krill Oil boasts 1,000 mg of krill oil per two-capsule serving. We were surprised to see that the krill oil comes in capsules, rather than the more readily digestible and absorbable softgels. It also includes an array of other ingredients, including olive oil, sunflower oil, rosemary leaf extract, and fish gelatin made from tilapia. For these reasons, Dr. Mercola Antarctic Krill dropped to fourth on our list of 2025’s Best Krill Oil Supplements.

Higher price ($50 for 60 softgels)

1,600 mg krill oil

Sourced from the Antarctic Ocean

Too many omega-3s for some people

Zero fillers

Very large softgel

No fishy aftertaste

Third-party tested

Non-GMO

Lemon-coated softgels

If you’re looking for a high-potency krill oil, this is it. Each 2-softgel serving boasts 1,600 mg of krill oil—sourced straight from the Antarctic Ocean. However, its higher dose means that it comes in a much larger softgel (over double the size of our first four picks), making it harder for some people to swallow. It should also be noted that the human body requires between 250-500 mg of omega-3s per day. Just one serving of KrillMD™ offers 320 mg. Omega-3s offer several excellent benefits, but exceeding recommended dosages may lead to blood thinning, reduced immune function, higher blood sugar levels, and more. That said, if you’re considering high-dose omega-3 supplements, it's advisable to do so under the guidance of a healthcare professional. For this reason, KrillMD™ dropped to last on our list of 2025’s Best Krill Oil Supplements.

MegaRed: Despite thousands of bottles of MegaRed Omega-3 Krill Oil being sold each month, MegaRed only offers 350 mg of krill oil per softgel. Not only that, it contains extremely low levels of astaxanthin (17 mcg) and unnecessarily contains ethyl vanillin—a synthetic compound that mimics the flavor and aroma of vanilla. 

Nature Made: Don’t be fooled by its claim of being the “#1 Pharmacist Recommended Vitamin & Supplement Brand.” The krill oil from Nature Made is one of the only krill oil supplements we found that isn’t sourced from the Antarctic Ocean. Instead, it states on the back of its bottle that the country of origin is Belgium or New Zealand. Plus, just like the brand above (MegaRed), Nature Made Krill Oil contains ethyl vanillin, a synthetic vanilla compound. Studies have shown that excessive doses of ethyl vanillin for long periods of time (more than six months) may lead to skin rashes, hikes, or even respiratory issues.

Krill are small, shrimp-like crustaceans that are found in all of the world’s oceans. They’re particularly abundant in the Southern Ocean and around Antarctica, where they form large swarms that can be seen from outer space.

More and more studies are showing krill oil to be the cleaner, more superior form of omega-3 fatty acids, and there are three main reasons why…

     1. First is their spot on the food chain…

Where fish oil supplements come from fish that are higher up on the food chain (mackerel, salmon, cod)…krill are at the very bottom of the food chain and have a much shorter lifespan. This reduces their exposure to heavy metals and pollutants like mercury and dioxins commonly found in the ocean. This makes krill oil more pure, safe, and potent.

     2. Second, krill contains something that fish oil doesn’t: astaxanthin. 

Astaxanthin is a carotenoid pigment that gives krill its distinctive reddish, pinkish color. Not only that, but it’s one of the most powerful antioxidants—up to 6,000 times more potent than vitamin C. That said, astaxanthin has an exceptional ability to protect cells from oxidative stress and inflammation, ease joint pain, reduce wrinkles and age spots, and so much more.

     3. And perhaps one of the best parts…

Krill oil doesn’t come with any fishy burps, aftertaste, or digestive discomfort (unlike regular fish oil pills). This is thanks to its omega-3s being attached to phospholipids, a type of fat that mixes well with what's in our stomach.

This makes for a much more enjoyable, bioavailable supplementation experience.

By taking a premium omega-3 krill oil supplement daily, you may experience the following science-backed benefits:

Maintains healthy liver function

Decreased joint pain and stiffness

Reduced swelling in legs, ankles, and feet

Supports healthy cholesterol & blood pressure

Dry eye relief

Improved brain health support

To recap, there are five important criteria to consider when shopping for a krill oil supplement…

1. Look at where the krill oil is sourced. It should always come from the Antarctic Ocean, as this is the cleanest, least polluted source of krill.
2. Look at the amount of krill oil per serving—it should be between 500-2,000 mg. This can be found on the Supplements Facts Panel on the back of the bottle.
3. Double-check the “Other Ingredients” section to ensure there are no fillers or synthetic flavors, such as ethyl vanillin. This information can be found directly beneath the Supplement Facts Panel on the back of the bottle.
4. Ensure the supplement is third-party tested and made in the USA.
5. If it’s harder for you to swallow larger pills, double-check the size of the softgel. Ideally, it’s a pea-sized softgel.

“I have tried so many different ways to get rid of the swelling in my feet and ankles and nothing seemed to work for me. Then I tried NativePath Krill oil and in a day or 3 my feet were NOT swollen, they didn't ache and I could wear my shoes that had not fit for a long time. I am so so happy with the results and I will definitely continue to use Native Path Krill oil and recommend it to whomever I hear complain about swollen feet and ankles!!! It was an absolute miracle for me!!!”

——L.S., NativePath Verified Customer

“This is the best thing I ever taken. I bought it because of swollen feet. I have neuropathy and have had difficulty walking. Now I am walking better than I have in years. I feel like I am getting my life back.”

—Evelyn M., NativePath Verified Review

“I had a recent annual visit with my PCP. She noticed I was taking the Antarctic Krill Oil and that I was taking it twice a day. My lab reports supported a reduction in my cholesterol numbers and a upgrade on my HDL. She supported my decision! She also commented that my blood pressure was excellent! I'm 77 years old and I'm staying very active!”

—J.W.H., NativePath Verified Customer

“I had been using what was considered the best omega 3 (antartic cod liver oil) on the market. I can honestly say that I never achieved the absorption rate from it that I have received from NativePath Antartic Krill oil. It is by far the best I’ve taken in 25 years.”

——Dwight R., NativePath Verified Review

“2nd month in now, and its seems to be helping with my dry eyes. Best of all? I don't miss fish oil one little bit!”

———Jeff M., NativePath Verified Review

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The information contained within this site is not intended as a substitute for professional medical advice. If you have, expect to have, or suspect you may have any medical condition, you are urged to consult with a health care provider. These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any diseases or medical conditions. Results are based on the Natural Reviews Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.

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