13 Best Fish Oil Supplements of 2024, According to Registered Dietitians

Nordic Naturals is one of the leading brands in the fish oil supplementation space and offers a variety of forms and dosages of high-quality fish oil. This option provides 650 mg EPA and 450 mg DHA as part of a grand total of 1,280 mg omega-3s per two-softgel serving, which is best taken with food. Free from artificial colors and flavors, this supplement is naturally flavored with lemon to offset any fishy aftertaste.

Our registered dietitians appreciate that everything the brand makes is non-GMO and third-party tested. The brand openly shares Certificates of Analyses for all of its products, and you can easily scan the QR code on the packaging of your product to see the test results yourself. You also have the option to purchase this supplement in larger counts — up to 210 soft gels per container — for additional savings. Over 47,000 reviewers on Amazon have given this product a 4.6-star (out of 5 stars) rating, with many saying that the soft gel is not smelly and doesn't make them burp. Some do note that the soft gels are fairly large though.

The Subscribe & Save option on Amazon will unlock the most savings for this product with Nordic Naturals as the verified seller, but you can also purchase the product directly on the brand's website.

You'll find a generous 400 servings of high-quality fish oil in this option from Costco. By far the best value pick on our list, each softgel contains a total of 1,000 mg omega-3 fatty acids, including 250 mg of EPA + DHA. Take one softgel two times daily with a full glass of water and preferably with a meal as per the suggested usage guidelines on the packaging.

In this case, affordability doesn't mean poor quality. In fact, this supplement carries the prestigious USP Verified Mark, which indicates that the product contains the ingredients listed on the label in the declared potency and amounts and does not contain harmful levels of specific contaminants. What's more, it's also been made according to the U.S. Food and Drug Administration's current Good Manufacturing Practices for sanitary and well-controlled procedures. Reviewers love the value and being able to stock up on a lot at once for a reasonable price. Our registered dietitians appreciate that this affordable choice is free from artificial colors and flavors.

Inspired by the Mediterranean diet, this supplement delivers not only 2,350 mg of fish oil concentrate but also a heart-healthy olive extract that the brand says provides the polyphenol equivalent of over 4 tbsp of extra virgin olive oil. In addition to 750 mg EPA and 510 mg DHA, you'll also find omega-3s from Antarctic krill and a source of the antioxidant astaxanthin that can promote eye health. The supplement has an added natural lemon flavor to avoid that dreaded fishy aftertaste.

Our pros like that a Certificate of Analysis is available for every product that the brand produces, and that 99% of the products are manufactured in the United States. Reviewers say that it didn't give them any fishy burps, but even though a serving size is two softgels, the brand recommends taking that twice daily.

Amazon's Subscribe & Save option offers the most savings for this product with Amazon as the verified seller, but you can also purchase the product directly on Life Extensions' website and get a lower cost per unit if you buy multiple bottles.

Hate taking large pills? This pick from GNC features mini fish oil softgels that are easy to swallow. You'll only have to take two mini softgels to hit the recommended serving, which provides 734 mg EPA and 266 mg DHA plus 65 mg additional omega-3s for a grand total of 1,065 mg. Free from artificial flavors and preservatives, this top pick is available in both 120-softgel and 240-softgel bottles (shown).

Approved by ConsumerLab.com through its Quality Certification Program, the supplement passed tests for heavy metals and freshness. Our registered dietitians also point out that this supplement is certified purified using a multi-step process that reduces contaminants such as heavy metals, dioxins and PCBs. You'll have to take it with food but reviewers appreciate that the supplements were easy to swallow and gave them no fishy burps.

If you subscribe to delivery of the product through GNC's website, you'll get a 10% savings plus free shipping too.

Fish oil supplements are notorious for being large and difficult to swallow. If softgels or pills are not your thing, consider a convenient liquid form. Our best overall brand also makes this liquid option that goes down easy. And it only takes a little to get the benefits: A mere 1 tsp serving delivers 1,460 mg EPA and 1,010 mg DHA as part of a potent 2,840 mg total omega-3s. This option also has a natural lemon flavor to offset any aftertaste and is free from artificial colors.

Our registered dietitians point out that all Nordic Naturals products are non-GMO and third-party tested. The brand openly shares Certificates of Analyses for all of its products, and you can easily scan the QR code on the packaging of your product to view the test results. The product does not come with a dropper and can be a bit messy to measure, but reviewers say that it is easy to take and works seamlessly when added to smoothies.

Try the Subscribe & Save option on Amazon for savings on this product with Nordic Naturals as the verified seller, but you can also purchase the product directly on the brand's website. Just note that the price per serving on this form is higher than many other options on our list.

Just one soft gel delivers 1,400 mg total omega-3 fatty acids, including 683 mg EPA and 252 mg DHA. You'll want to take the softgel with water and a meal for optimal absorption. This pick from Nature Made is free from added colors, artificial flavors, gluten, milk and shellfish too. The soft gels are about one inch and are enteric coated specifically to reduce fish burps.

The brand's 1,200 mg and 1,000 mg softgels are USP Verified too. Most reviewers found them fairly easy to swallow and said that they indeed give no fishy burps. This pick in general is also quite affordable, with each softgel coming in at only $0.21.

You can save up to 10% with Subscribe & Save on Amazon which will garner the most savings, but there is also a subscribe and save option on Nature Made's website for 10% and free shipping.

Formulated by registered dietitians, Hum makes this unique fish oil complex that also packs in 13.4 mg of vitamin E, an important fat-soluble vitamin that acts as an antioxidant in the body. In terms of fish oil, you'll find 1,400 mg omega-3 fatty acids sourced from anchovies, including 800 mg EPA and 400 mg DHA.

All of HUM's products are made in facilities that are certified to follow GMPs (Good Manufacturing Processes), required by the U.S. Food and Drug Administration (FDA). This supplement from Hum is also certified by the Clean Label Project, meaning it has been third-party tested for purity. Another important thing to note is that the brand claims that all of its products are gluten-free and tested to ensure gluten isn’t present at levels greater than 20 ppm.

Reviewers appreciate that the supplement has no fishy aftertaste or smell. But one small downside is that the only bottle size is for a 30-day supply, as no larger options are available. If you purchase three bottles on Hum's website, you'll get a 10% discount.

There is lots of buzz around krill oil, an alternative to fish oil that comes from small crustaceans with tons of nutrients. Each dose delivers essential omega-3s (1,200 mg to be exact) in their most natural phospholipid form that the body favors for superior absorption. The red color of these pills is thanks to astaxanthin, a naturally occurring antioxidant, so there's no need to worry about unnatural dyes. This fairly large pill only needs to be taken once a day, but the brand does make smaller options if you'd rather take smaller pills multiple times a day.

Kori Pure Antarctic Krill Oil is sourced from Antarctica, and consumers can even use the scannable QR code on each bottle to trace the exact spot where their specific batch was harvested. This product has also passed a rigorous evaluation with Good Housekeeping experts who evaluated testing data and reports from the brand.

You can subscribe and save on Amazon or purchase through the brand's website for similar savings.

A vegan fish oil supplement may sound like an oxymoron, but there are some potent plant-based sources of omega-3 fatty acids that are suitable for those living a vegan lifestyle. This option from Deva supplies 1,000 mg of omega-3s from microalgae oil, with a breakdown of 500 mg of combined EPA and DHA. Registered by the Vegan Society, this product is also free from gelatin. A serving is one vegan soft gel daily with food.

Approved by ConsumerLab.com as part of its voluntary Quality Certification Program, this option passed tests for heavy metal. Reviewers like that it is free from carrageenan and doesn't have a bad taste either. The pills are fairly large, but you'll get a 60-day supply in each container.

Omega-3 fatty acids are important for brain development before and after birth, and they may even reduce the risk of preterm birth. Pregnant people are encouraged to eat low-mercury fish since mercury is a metal that has been linked to birth defects. But if you have a hard time eating fish during pregnancy, which is very common between bouts of nausea and food aversions, a prenatal supplement may be beneficial.

Garden of Life, a top-tested brand that we have featured in several other articles, has a line of omega-3 supplements known as Minami. This concentrated option from is designed to support prenatal health, breastfeeding and lactation. It has 640 mg total omega-3 fatty acids, including 480 mg DHA and 104 mg EPA in each softgel, and should be taken with water and food. It's not as high potency as others on this list, but it will certainly help pregnant people reach their daily needs. It has a lemon flavor to bypass any fishy aftertaste (the majority of reviewers agreed), and this supplement in particular has undergone rigorous in-house and third-party testing for purity and heavy metals.

The Subscribe & Save option on Amazon will give you the greatest savings on this product.

Looking for an omega-3 supplement that's both vegan and liquid? Flaxseed oil is the perfect solution. This option from Barlean's is organic, unrefined and cold-pressed. It's pure organic flaxseed oil (that's it) and should be refrigerated. A serving is 1 tablespoon, which supplies a whopping 7,640 mg omega-3 fatty acids, so you could even take a mere teaspoon for a hefty daily dose.

Keep in mind that flaxseed oil has a low-smoke point, so it's best to avoid cooking with it on high-heat; instead, use it for drizzling or making salad dressings. Our registered dietitians say that you can easily add it to smoothies and shakes to get your dose. It's available in this 8-oz size and goes all the way up to 32 ounces. This pick is also USDA Organic and non-GMO Project verified.

Kids ages three and up who aren't big fish eaters may benefit from this gummy option from Nordic Naturals. Each gummy chew provides 600 mg total omega-3 fatty acids, broken down into 145 mg EPA and 355 mg DHA. The gummies have no sugar and are sweetened instead with a small amount of stevia extract, but a serving is only one gummy so it's important to keep these out of reach of children when not in use, since eating too many may result in toxicity.

Our registered dietitians appreciate that these gummies are free from artificial coloring, flavoring and preservatives. Finding a supplement for children can be incredibly difficult and warrants a conversation with your trusted pediatrician. But the good news about this pick is that the Nordic Naturals brand third-party tests all of its products for purity and freshness. Plus, Certificates of Analysis are available for any product.

Opt for Subscribe & Save on Amazon for 10% savings — even more savings compared to the direct website.

Our furry friends need some omega-3s in their lives too! This fish oil is made with sardines, mackerel, anchovies and herrings. The liquid supplement is designed to support your dog’s joints, heart, skin, coat, brain and overall health. You'll find a total of 1,598 mg omega-3 fatty acids, including 800 mg EPA and 525 mg DHA.

All of the brand's ingredients have been reviewed by the National Animal Supplementation Council and carry the quality seal for labeling, testing, quality control and production. This pick can be taken by cats as well and is easy to add to their existing pet food. Reviewers were pleased with the quality, and many said that they saw improvements over time with their dog's hair, but some users note issues with utilizing the pump.