Cod liver oil has reemerged as a powerhouse supplement in the wellness world, and for good reason. Beyond delivering the omega-3 fatty acids EPA and DHA that support heart and brain health, it’s one of the few natural sources offering vitamins A and D together—nutrients essential for glowing skin, strong hair, immune function, and bone density. If you’re looking to streamline your supplement routine or simply want a nutrient-dense addition that addresses multiple wellness goals, cod liver oil deserves a spot on your radar.
But not all cod liver oil is created equal. Processing methods, sourcing practices, omega-3 concentrations, and third-party testing vary widely across brands. We researched current products from leading supplement companies, consulted science-backed benefits of cod liver oil, and examined specs, flavor options, and value to bring you this ranked guide.
What to Look for in a Quality Cod Liver Oil
When choosing a cod liver oil supplement, prioritize these factors:
- Omega-3 content per serving: Look for clear EPA and DHA totals, not just “total fish oil.” A quality liquid typically delivers 1,000+ mg of combined omega-3s per teaspoon.
- Third-party testing and certifications: Certifications from organizations like IFOS help ensure purity and low contamination levels.
- Sustainably sourced fish: Wild-caught cod from clean, cold waters typically have lower pollutant levels.
- Vitamins A and D levels: These fat-soluble vitamins accumulate in the body, so check amounts if you take other supplements to avoid excess intake.
- Freshness handling: Liquid oils should include guidance on refrigeration and use-by timelines after opening.
Top Cod Liver Oil Supplements, Ranked
1. Carlson Cod Liver Oil – Best Overall for High-Dose Omega-3s
With 1,100 mg of omega-3s per teaspoon, Carlson Labs delivers one of the highest concentrations of EPA and DHA in liquid form. The oil comes from wild-caught Norwegian Arctic cod processed the same day of capture, which helps preserve freshness and nutrient integrity. It’s IFOS-certified and tested by an FDA-registered lab, meeting rigorous purity standards for heavy metals and contaminants.
Available in four flavors—lemon, green apple, fruit splash, and natural—the liquid format makes it easy to adjust doses or mix into smoothies for kids. Carlson also pledges plastic-neutral operations, an added bonus for eco-conscious buyers. The 250 mL bottle runs $38.90, while the 500 mL is $72, offering solid value for daily use.
Trade-off: Liquid cod liver oil requires refrigeration after opening and should be used within about 100 days for optimal freshness, which can be less convenient than shelf-stable capsules.
2. Nordic Naturals Arctic Cod Liver Oil – Best Brand Recognition
Nordic Naturals is the top-selling fish oil brand in the U.S., and its Arctic Cod Liver Oil has earned multiple awards, including Clean Eating Magazine’s Clean Choice Award. The liquid delivers 1,060 mg of total omega-3s per teaspoon (including 340 mg EPA and 510 mg DHA), sourced from 100% wild Arctic cod. It’s third-party tested, Friend of the Sea certified, and available in lemon, orange, strawberry, and unflavored options.
Nordic Naturals uses the triglyceride molecular form of omega-3s, which the body absorbs more readily than synthetic ethyl esters. The softgel version offers 750 mg of omega-3s per three-capsule serving, making it a good pick for those who prefer capsules over liquid. An 8 oz bottle typically retails around $27.
Trade-off: The omega-3 concentration per teaspoon is slightly lower than Carlson, so you may need a larger serving to hit higher therapeutic doses.
3. Rosita Real Foods Extra Virgin Cod Liver Oil – Best for Raw, Minimally Processed Oil
Rosita sets itself apart by producing the only raw, wild-caught cod liver oil on the market. Using a generations-old extraction technique that involves no heat, chemicals, or mechanical processing, Rosita preserves naturally occurring vitamins A and D without synthetic fortification. The cod are hook-and-line caught in Norwegian fjords, and the oil is bottled within 48 hours of harvest.
This ultra-minimal processing appeals to those seeking a whole-food supplement that the body recognizes as real nutrition rather than a refined product. The 150 mL liquid bottle runs around $70, with softgels also available for travel convenience. Each batch is third-party tested to meet strict European and WHO purity standards.
Trade-off: Rosita’s omega-3 totals are lower per serving than refined options, and the raw, unprocessed nature means a stronger fish taste that some users find challenging, even with the liquid’s naturally light profile.
4. Nordic Naturals Arctic-D Cod Liver Oil – Best for Vitamin D Boost
If you’re specifically looking to increase vitamin D intake alongside omega-3s, Nordic Naturals’ Arctic-D formula adds 1,000 IU of vitamin D3 per teaspoon in addition to 1,060 mg of omega-3s. This makes it particularly useful during winter months or for those with limited sun exposure. It’s available in liquid (8 oz for around $30) and softgel formats, with the same third-party testing and Friend of the Sea certification as the standard Arctic line.
Trade-off: If you already take a D supplement or multivitamin, monitor your total intake to avoid exceeding recommended limits for this fat-soluble vitamin.
5. NOW Foods Cod Liver Oil – Best Budget Pick
NOW Foods offers a more affordable entry point into cod liver oil supplementation. Their softgels deliver a moderate dose of omega-3s along with vitamins A and D, and the brand maintains GMP certification for quality control. Bottles are widely available at health food stores and online retailers, typically priced under $15 for a month’s supply. NOW Foods products are non-GMO and tested for potency and purity, though they lack the IFOS certification of top-tier brands.
Trade-off: Lower omega-3 content per serving means you’ll need more capsules to match the therapeutic doses offered by Carlson or Nordic Naturals, and there’s less transparency around sourcing and freshness protocols.
Cod Liver Oil vs. Standard Fish Oil: What’s the Difference?
Standard fish oil is extracted from the tissue of fatty fish like sardines, anchovies, and mackerel, delivering primarily EPA and DHA. Cod liver oil, extracted specifically from cod livers, provides the same omega-3s but with the bonus of naturally occurring vitamins A and D. This makes cod liver oil a more comprehensive supplement for skin health, vision support, and immune function—areas where vitamin A plays a critical role.
However, because vitamins A and D are fat-soluble and stored in the body, it’s important to monitor your total intake if you’re combining cod liver oil with other supplements or fortified foods.
Omega-3 for Kids and Family Use
Liquid cod liver oil is particularly well-suited for families. The ability to measure smaller doses makes it easy to give children age-appropriate amounts, and flavored versions help with palatability. Both Carlson and Nordic Naturals offer kid-friendly flavors, and the omega-3s support brain development, healthy vision, and immune function during growth years.
Most brands recommend starting with a quarter to half teaspoon for young children, adjusting based on age and dietary needs. Always consult a pediatrician before introducing supplements to children under two.
What About Plant-Based Omega-3 Supplements?
For those avoiding fish products, algae-based omega-3 supplements provide DHA and EPA without animal sources. While they don’t contain vitamins A and D like cod liver oil, algae supplements can be just as effective at raising omega-3 levels in the body. Brands like Ovega-3 and Nordic Naturals Algae Omega offer vegan-friendly options, though they’re typically priced higher than fish-derived oils.
How to Take Cod Liver Oil
Most experts recommend 1 to 2 teaspoons of liquid cod liver oil daily, ideally taken with a meal to enhance absorption and minimize any fishy aftertaste. Liquid oil should be refrigerated after opening and used within three months for optimal freshness. Softgels offer a convenient alternative for travel or those who dislike the taste of liquid oil, though they typically require three or more capsules to match the omega-3 dose of a teaspoon of liquid.
Frequently Asked Questions
Can Cod Liver Oil Help With Dry Skin and Hair Health?
Yes. The combination of omega-3 fatty acids and vitamin A in cod liver oil supports skin barrier function, reduces inflammation, and promotes healthy cell turnover—all of which contribute to hydrated skin and stronger hair. Vitamin A also plays a role in sebum production, which keeps the scalp moisturized.
Is Cod Liver Oil Safe During Pregnancy?
Omega-3s, particularly DHA, are important for fetal brain and eye development. However, because cod liver oil contains vitamin A, pregnant individuals should consult their healthcare provider to avoid exceeding safe vitamin A levels, which can pose risks in high amounts during pregnancy.
How Do I Know if My Cod Liver Oil Is Fresh?
Fresh cod liver oil should have a mild, clean scent—never a strong fishy or rancid odor. Check the expiration date, and once opened, refrigerate promptly and use within the timeframe recommended on the label (typically 90–100 days). Oxidized oil loses potency and can cause digestive discomfort.
Can I Take Cod Liver Oil if I’m Already Taking a Multivitamin?
You can, but pay close attention to your total intake of vitamins A and D. Both are fat-soluble and accumulate in the body, so exceeding recommended daily limits over time can lead to toxicity. Check the nutrient labels on all your supplements and consult a healthcare provider if you’re unsure.
What’s the Difference Between Fermented and Non-Fermented Cod Liver Oil?
Fermented cod liver oil undergoes a natural fermentation process rather than heat or chemical extraction. Proponents claim it’s more nutrient-dense and easier to digest, though it’s more expensive and has a stronger taste. Non-fermented cod liver oil, like most products from Carlson and Nordic Naturals, uses gentle processing to preserve omega-3s and vitamins without fermentation.
Final Verdict
For the highest omega-3 concentration, reliable third-party testing, and excellent value, Carlson Cod Liver Oil takes the top spot. Its 1,100 mg per teaspoon delivers therapeutic doses in a single serving, and the IFOS certification provides peace of mind on purity. Nordic Naturals offers a close second with strong brand trust and award-winning formulas, while Rosita appeals to those prioritizing raw, minimally processed nutrition. Budget-conscious buyers will appreciate NOW Foods, though with the understanding that omega-3 levels are lower.
No matter which product you choose, consistency matters more than brand. Omega-3s and fat-soluble vitamins build up in the body over time, so daily use—whether via liquid or softgel—will deliver the most noticeable benefits for skin, hair, immunity, and overall vitality.
