The 7 Best Omega-3 Supplements for a Healthy Heart

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Omega-3s are a type of polyunsaturated fat that our bodies can’t make themselves — we have to get these essential fatty acids from our diet. Omega-3s help the body decrease inflammation and keep our brain and immune system functioning. They’re also essential for heart health and fetal development

There are three types of omega-3s that you’ll find on a supplement label:

If you’re an avid fish eater, you likely get enough omega-3s from your diet. But if you don’t eat fish, have a history of heart attacks or have elevated levels of triglycerides, a supplement can be a good addition to your diet. There are many options, and selecting the best omega-3 supplement for your needs can be difficult. That’s why we pulled together a list of the top brands on the market. 

Before taking an omega-three supplement, talk to your doctor about the dosage, especially if you take an anticoagulant or antiplatelet medication


Omega-3 supplements commonly have fairly large pills, generally measuring from half an inch to an inch. For some, that poses a problem. GNC offers an alternative with its mini fish oil softgels. The GNC Triple Strength Fish Oil Mini wins the best overall omega-3 supplement for its size and concentration of omega-3s. 

The small softgels are enteric-coated, which means there’s a polymer applied to the outside of the softgel to keep it from dissolving in the stomach. The softgels then move to the small intestine, where they are digested and released. It also means there isn’t a fishy aftertaste.

GNC Triple Strength Fish Oil Mini has a good concentration of omega-3s EPA (734 mg) and DHA (266 mg).

Cost: $35.59 for 240 mini softgels

Omega-3 content per serving: 1,065 mg of omega-3 per two softgels

Best features:

  • The GNC Mini softgels are smaller than the average size of omega-3 supplements, which is good for people who have trouble swallowing large pills. 
  • This fish oil supplement is ConsumerLab tested and approved. This shows that the product is free of heavy metals. 

Things to consider:

  • The dosage of this GNC fish oil supplement is two softgels. It’s somewhat of a trade-off — they are smaller pills, but you have to take two of them.


For bulk buyers, consider the Kirkland Signature Natural Fish Oil supplement. It’s inexpensive at $18 for 400 capsules. This omega-3 supplement doesn’t have all the bells and whistles other brands have — it’s a basic, no-fuss option for people who don’t need a high dose of fish oil. Kirkland Signature fish oil supplement only includes 300mg of EPA and DHA per softgel. That’s significantly less than other brands; however, taking one capsule twice daily puts it closer to the rest in terms of dosage. 

The softgel capsules are long and narrow to make them easier to swallow. Still, the pills are large; some reviewers suggest they are hard to swallow. 

Cost: $18 for 400 capsules 

Omega-3 content per serving: 300mg omega-3 per softgel

Best features:

  • Kirkland Signature’s fish oil supplement is a must for people who want to buy in bulk at an affordable price. 
  • It holds a USP certification

Things to consider:

  • Other options on the list have a higher omega-3 dose.
  • These fish oil capsules aren’t enteric coated, which means there is nothing to hide that fishy aftertaste. 


When it comes to fish oil and omega-3 supplements, taste matters, Barlean’s Ideal Omega-3 Softgels are great for those who want to avoid the fishy taste that some omega-3 supplements have. It features an orange flavor that covers the smell and taste of fish oil so that you can get the benefits without the unpleasant side effects — fishy burps and aftertaste. User reviews say these orange omega-3 supplements don’t leave a fishy aftertaste in their mouth. 

The dosage for this omega-3 supplement is one softgel, which users point out is rather large. However, the softgel form makes them easy to swallow. You get 750mg of EPA and 250mg of DHA omega-3s with one softgel. 

Cost: $35.09 for 60 softgels

Omega-3 content per serving: 1,000mg of omega-3 per softgel

Best features:

  • Barlean’s Omega-3 supplement has an orange flavor that doesn’t leave a fishy taste. 
  • This omega-3 supplement has a five-star rating from International Fish Oil Standards.

Things to consider:

  • You only get a 60-day supply for $35. It’s slightly more expensive than other options on the list. 

Nature Made

There’s a gummy supplement for everything — omega-3s included. Nature Made Fish Oil Gummies are a great option for people looking for a yummy way to intake a low dose of omega-3s. The two-serving dose only includes 47.5mg of DHA and 9.5mg of EPA omega-3s. Because of the low dose, it’s not the best choice if you’re deficient in omega-3s; it’s better suited for people who already get most of it from their diet but are looking for a little boost. 

Nature Made Fish Oil Gummies are free of any synthetic flavors or colors. The fish sources are wild, deep ocean water fish, not from raised farms. These fish oil gummies are also USP certified for quality and purity. 

Cost: $14.30 for 90 gummies

Omega-3 content per serving: 57mg of omega-3s per two gummies.

Best features:

Things to consider:

  • Nature Made Fish Oil Gummies have 3 grams of added sugar per serving. 
  • These fish oil gummies have a significantly lower omega-3 content than other brands. 

Life Extension

For those looking to add an omega-3 supplement for heart health, consider the Life Extension Super Omega-3 Supplement. It features a formula of DHA, EPA, olive extract and sesame lignans for an antioxidant and antimicrobial supplement. Research shows that olive leaf extract and sesame can help prevent heart disease

Life Extension’s omega-3 supplement carries a five-star certification from IFOS. It’s also gluten-free and non-GMO. This omega-3 supplement delivers a solid dose of both DHA (500mg) and EPA (700mg). However, that is a trade-off of serving size. Instead of the standard one or two capsules a day, Life Extension requires two capsules twice a day with food. 

Cost: $25.51 for 240 softgels

Omega-3 content per serving: 1,200mg of Omega-3s per four softgels

Best features:

  • Life Extension’s omega-3 softgel supplement is gluten- and GMO-free and has earned a five-star certification from IFOS.
  • The source of the fish in this product is sustainably-caught anchovies from off the coast of Chile. 

Things to consider:

  • The packaging on the bottle says “small” softgels; however, some customer reviews point out that while they may be smaller than other brands, they are not truly small. 
  • Life Extension’s omega-3 supplement has a serving size of two capsules twice daily with meals. 


Omega-3 supplements are typically derived from fish sources. However, there are vegan plant-based omega-3 supplements available, too. The best of these is Truvani Plant-Based Omega, an algae omega-3 dietary supplement. 

With a two-capsule serving size, you get 500mg of DHA omega-3s. This vegan omega-3 supplement is minimally processed and doesn’t impact ocean life. Truvani offers a 30-day, money-back guarantee if you’re not pleased with this vegan supplement. 

Cost: $31.49 for 60 veggie capsules

Omega-3 content per serving: 500mg of DHA omega-3s

Best features:

  • These plant-based omega-3 capsules are certified vegan and gluten-free products.
  • Truvani is also tested for chemicals and heavy metals. 

Things to consider:

Nordic Naturals

Most fish oil supplement pills are large, significantly larger than other capsules. This poses a problem for people who have a hard time swallowing pills. Liquid omega-3 offers a way to boost your intake without having to worry about large capsules. Nordic Naturals Ultimate Omega Liquid omega-3 supplement is free from artificial additives and fillers. 

Nordic Natural is a well-known brand that offers the best liquid fish oil supplement. The serving size is one teaspoon, with the highest concentration of omega-3s on the list. Each serving contains 1,470mg of EPA and 1,010mg of DHA in triglyceride form. Research suggests that the triglyceride form may be better absorbed in the body

Cost: $33.88 for a 4 fl. oz. bottle

Omega-3 content per serving: 2,470mg of omega-3 per one teaspoon 

Best features:

  • Nordic Naturals products are third-party tested and approved by ConsumerLab.
  • This product has a subtle lemon flavor that can mix easily into drinks or food.

Things to consider:

  • Nordic Naturals Liquid Fish Oil has a very high concentration of omega-3s, which may be too much for some. Always speak with your doctor before taking such a high dose. 

How we chose the best omega-3 supplements

When choosing the best omega-3 supplements, we considered factors like cost, dosage, form and quality. We also researched each product’s customer reviews to compare the capsules’ texture, taste and size. We didn’t test these products in-house. We relied on third-party certifications to determine the quality and purity of the products. 

Things to consider when buying the best omega-3 supplements

The market is flooded with brands offering omega-3 supplements. Knowing which is the best fit for you can be difficult. When shopping, keep these things in mind:

Best omega-3 supplement FAQ

Is it good to take omega-3 supplements every day?

According to the National Institutes of Health, it’s recommended that adults intake at least 250mg of omega-3s — including DHA and EPA combined. Higher dosages can benefit medication conditions.

If you’re someone who doesn’t eat fish or omega-3-rich foods, you can regularly take an omega-3 supplement each day. However, you must consult your doctor to determine the right dosage for your needs. 

The information contained in this article is for educational and informational purposes only and is not intended as health or medical advice. Always consult a physician or other qualified health provider regarding any questions you may have about a medical condition or health objectives.