10 Best Krill Oil Supplements (2026) Reviewed
Krill oil has emerged as a premium alternative to traditional fish oil for those seeking omega-3 fatty acids. Derived from tiny crustaceans harvested in the pristine waters of Antarctica, krill oil offers a unique advantage: its omega-3s are bound to phospholipids rather than triglycerides, which research suggests may improve absorption and bioavailability compared to standard fish oil.
What sets quality krill oil apart is more than just omega-3 content. The best supplements also deliver naturally occurring astaxanthin—a potent antioxidant that gives krill their distinctive red color—along with choline, an essential nutrient for brain and liver function. When shopping for krill oil, sourcing matters significantly: Antarctic krill from well-managed fisheries ensures both purity and sustainability.
Our team evaluated dozens of krill oil supplements based on omega-3 content, phospholipid levels, astaxanthin concentration, third-party testing, sustainability certifications, and overall value. After extensive research across Amazon bestsellers, third-party review sites like Innerbody and ConsumerLab, and manufacturer specifications, we’ve identified the ten best krill oil supplements for 2026.
Table of Contents
- Quick Comparison Table
- Best Krill Oil by Type
- Sports Research Antarctic Krill Oil — Best Overall
- NatureMyst Krill Oil — Highest Omega-3 Content
- Bronson Antarctic Krill Oil — Best Budget
- Viva Naturals Antarctic Krill Oil — Best for Astaxanthin
- MegaRed Ultra Strength — Best Name Brand
- Kori Krill Oil — Most Convenient (One-A-Day)
- Dr. Mercola Antarctic Krill Oil — Best Premium
- Onnit Antarctic Krill Oil — Best for Athletes
- MegaRed Extra Strength — Best for Beginners
- Bronson 1000mg — Best Value Per Serving
- Buying Guide
- How to Take Krill Oil
- Potential Benefits of Krill Oil
- Safety and Side Effects
- FAQ
- Bottom Line
Quick Comparison Table
| Product | Form | Serving Size | Key Differentiator | Best For | Winner |
|---|---|---|---|---|---|
| Sports Research Antarctic Krill Oil | Softgels | 1 softgel (1000mg) | MSC certified, Superba2 krill oil, IFOS 5-star | Overall quality seekers | 🏆 TOP PICK |
| NatureMyst Krill Oil | Softgels | 2 softgels (1000mg) | 340mg omega-3s, 1500mcg astaxanthin, enteric coated | Maximum omega-3 intake | 🥇 Highest Potency |
| Bronson Antarctic Krill Oil 2000mg | Softgels | 2 softgels (2000mg) | Heavy metal tested, 60+ year brand heritage | Budget-conscious buyers | 🥇 Best Budget |
| Viva Naturals Antarctic Krill Oil | Caplique capsules | 2 capsules (1250mg) | 1600mcg astaxanthin, 575mg phospholipids, IKOS certified | Antioxidant support | 🥇 Best Astaxanthin |
| MegaRed Ultra Strength | Softgels | 1 softgel (1000mg) | #1 doctor recommended brand, PureTech process | Brand recognition | 🥇 Best Name Brand |
| Kori Krill Oil | Softgels | 1 softgel (1200mg) | Only “A” rated fishery, highest sustainability rating | One-a-day convenience | 🥇 Most Convenient |
| Dr. Mercola Antarctic Krill Oil | Capsules | 2 capsules (1000mg) | 2mg organic astaxanthin, fish gelatin capsules | Premium quality seekers | 🥇 Best Premium |
| Onnit Antarctic Krill Oil | Softgels | 2 softgels (1000mg) | IGEN Non-GMO tested, MSC certified, athlete-focused | Athletes and fitness enthusiasts | 🥇 Best for Athletes |
| MegaRed Extra Strength | Softgels | 1 softgel (500mg) | Smaller softgels, 3X purer than regular krill oil | First-time krill oil users | 🥇 Best for Beginners |
| Bronson Antarctic Krill Oil 1000mg | Softgels | 2 softgels (1000mg) | 120 softgels per bottle, laboratory tested in NY | Long-term value | 🥇 Best Value |
Best Krill Oil by Type
Standard Softgels (Most Common)
The majority of krill oil supplements come in traditional softgel form. These provide straightforward dosing, typically 500-1000mg per capsule, and are suitable for most users. Standard softgels from brands like Sports Research and Bronson offer excellent value while delivering clinically meaningful doses of omega-3s. The main consideration is softgel size—some users with swallowing difficulties may prefer smaller options.
Caplique Capsules (Burp-Free Technology)
Viva Naturals uses proprietary Caplique capsule technology designed to prevent the fishy aftertaste and “fish burps” some users experience with omega-3 supplements. These capsules use a unique delivery system that may reduce digestive discomfort. If you’ve struggled with fish oil in the past, Caplique capsules offer an excellent alternative.
High-Concentration Formulas (2000mg+)
For those seeking maximum omega-3 intake, high-concentration formulas like Bronson’s 2000mg option deliver more krill oil per serving. These are ideal for individuals with specific health goals or those who prefer fewer capsules per day. However, the serving size typically requires 2 softgels, so the convenience factor is similar to standard-strength options.
Low-Dose Options (500mg)
Beginners or those sensitive to supplements may prefer lower-dose options like MegaRed Extra Strength (500mg). These feature smaller, easier-to-swallow softgels and allow for gradual dosage adjustment. They’re also suitable for maintenance dosing after an initial loading period with higher-concentration products.
Sports Research Antarctic Krill Oil — Best Overall
The gold standard for krill oil supplementation, Sports Research combines premium Superba2 krill oil with industry-leading certifications and exceptional value.
Sports Research has established itself as the benchmark for quality krill oil supplements. Their formula uses Superba2 krill oil—a clinically studied, patented form of krill oil with documented benefits in over 50 peer-reviewed studies. What truly sets this product apart is its comprehensive certification profile: MSC (Marine Stewardship Council) certified sustainable, IFOS 5-star rated for purity, and IKOS certified for potency.
Each single softgel delivers 1000mg of krill oil with approximately 240mg of omega-3 fatty acids (136mg EPA and 60mg DHA), along with 400mg of phospholipids and naturally occurring astaxanthin. The one-softgel-per-day dosing makes compliance easy, and users consistently report no fishy aftertaste—a common complaint with inferior krill oil products. Sports Research manufactures in a cGMP-certified facility and conducts third-party testing for heavy metals, ensuring what you see on the label matches what’s in the bottle.
Key Specifications:
- Serving size: 1 softgel (1000mg krill oil)
- Omega-3s: ~240mg (EPA 136mg, DHA 60mg)
- Phospholipids: ~400mg
- Certifications: MSC, IFOS 5-star, Non-GMO, cGMP
- Count: 60 softgels (2-month supply)
Considerations: While competitively priced, Sports Research isn’t the absolute cheapest option. Budget-conscious buyers may find better per-serving value with Bronson’s offerings, though they sacrifice some certification credentials.
NatureMyst Krill Oil — Highest Omega-3 Content
NatureMyst delivers the highest omega-3 concentration among pure krill oil supplements, making it ideal for those prioritizing maximum fatty acid intake.
For users seeking the most omega-3s per serving, NatureMyst stands out with 340mg of omega-3 fatty acids (230mg EPA and 110mg DHA) per 1000mg serving—significantly higher than most competitors. The formula also includes 450mg of phospholipids and an impressive 1500mcg (1.5mg) of astaxanthin, providing substantial antioxidant support alongside omega-3 benefits.
NatureMyst sources wild-caught krill from deep Antarctic waters and processes it using supercritical CO2 extraction, which preserves nutrient integrity without chemical solvents. Each batch undergoes third-party testing for purity, potency, and label accuracy. The softgels feature enteric coating and are packaged in a nitrogen vacuum environment to prevent oxidation—important details that distinguish quality manufacturers from bargain brands. Friend of the Sea certification confirms sustainable sourcing practices.
Key Specifications:
- Serving size: 2 softgels (1000mg krill oil)
- Omega-3s: 340mg (EPA 230mg, DHA 110mg)
- Phospholipids: 450mg
- Astaxanthin: 1500mcg
- Certifications: Friend of the Sea, GMP, third-party tested
- Count: 60 softgels (1-month supply)
Considerations: The 2-softgel serving size means you’ll go through bottles faster than single-softgel alternatives. Some users may find this less convenient, though the higher omega-3 yield per serving compensates for the extra capsule.
Bronson Antarctic Krill Oil 2000mg — Best Budget
Bronson delivers pharmaceutical-grade quality at budget-friendly prices, backed by over 60 years of supplement manufacturing expertise.
Bronson Vitamins has been a trusted name in supplements since 1960, and their Antarctic Krill Oil exemplifies their commitment to quality without premium pricing. The 2000mg formula delivers a robust dose of krill oil per serving, providing meaningful omega-3 content without breaking the bank. Each batch is laboratory tested at their New York cGMP-certified facility for heavy metals, ensuring products are free from mercury, lead, and other contaminants common in marine-sourced supplements.
What makes Bronson particularly appealing for budget-conscious consumers is the generous 120-softgel count, providing 60 servings per bottle. The formula includes EPA, DHA, astaxanthin, and phospholipids—all the key components you’d expect from premium krill oil—without added fillers or artificial ingredients. The company’s transparent approach to manufacturing and testing, combined with their decades-long track record, provides confidence that you’re getting legitimate product at an honest price.
Key Specifications:
- Serving size: 2 softgels (2000mg krill oil)
- Omega-3s: Standardized EPA/DHA content
- Phospholipids: Included
- Astaxanthin: Naturally occurring
- Certifications: Heavy metal tested, Non-GMO, Gluten-free, cGMP
- Count: 120 softgels (60 servings)
Considerations: Bronson doesn’t carry the MSC or IFOS certifications that premium brands like Sports Research offer. If third-party sustainability and purity certifications are priorities, you may want to spend slightly more for certified products.
Viva Naturals Antarctic Krill Oil — Best for Astaxanthin
Viva Naturals boasts one of the highest astaxanthin concentrations on the market, plus innovative Caplique capsules that eliminate fishy burps.
Astaxanthin is the powerful antioxidant that gives krill and salmon their distinctive pink-red color, and Viva Naturals leads the category with 1600mcg (1.6mg) per serving—among the highest available. This potent antioxidant may support skin health, eye function, and cellular protection against oxidative stress, making Viva Naturals an excellent choice for those seeking benefits beyond basic omega-3 supplementation.
The formula delivers 1250mg of krill oil per serving with 330mg of omega-3s (180mg EPA, 90mg DHA) and an impressive 575mg of phospholipids for enhanced absorption. Viva Naturals uses proprietary Caplique capsules specifically designed to prevent the fishy aftertaste and reflux that plague many fish and krill oil users. IKOS 5-star certification confirms third-party testing for purity and potency, while sustainable Antarctic sourcing ensures environmental responsibility.
Key Specifications:
- Serving size: 2 Caplique capsules (1250mg krill oil)
- Omega-3s: 330mg (EPA 180mg, DHA 90mg)
- Phospholipids: 575mg
- Astaxanthin: 1600mcg
- Certifications: IKOS 5-star, Non-GMO, cGMP
- Count: 60 capsules (30 servings)
Considerations: The 30-serving bottle means you’ll need to reorder monthly rather than every two months. Users seeking longer-lasting supplies may prefer brands with higher capsule counts, though Viva Naturals’ unique Caplique technology justifies the purchase for those sensitive to fish oil side effects.
MegaRed Ultra Strength — Best Name Brand
As the #1 doctor-recommended krill oil brand, MegaRed Ultra Strength offers pharmaceutical-grade purity backed by extensive clinical research.
MegaRed has invested heavily in clinical research and physician education, making it the most recognized krill oil brand in pharmacies and doctor’s offices nationwide. Their Ultra Strength formula uses proprietary PureTech processing that removes salts and impurities, resulting in what they claim is 3X purer krill oil than standard products. The translucent softgels visually demonstrate this purity—cleaner oil produces a lighter, more translucent appearance.
Each 1000mg softgel contains omega-3 fatty acids, phospholipids, and astaxanthin in a formulation clinically shown to raise omega-3 index levels within 30 days. MegaRed sources exclusively from Antarctic krill and has earned MSC certification for sustainable fishing practices. The Sure Dissolve softgel technology ensures capsules break down within one hour, optimizing absorption and virtually eliminating the fishy aftertaste associated with inferior products.
Key Specifications:
- Serving size: 1 softgel (1000mg krill oil)
- Omega-3s: ~225mg total
- Phospholipids: Included
- Astaxanthin: Naturally occurring
- Certifications: MSC sustainable, PureTech process
- Count: 60 softgels (2-month supply)
Considerations: MegaRed commands premium pricing that reflects its brand positioning and marketing investment. Value-focused shoppers can achieve similar omega-3 intake for less money with brands like Sports Research or Bronson, though MegaRed’s clinical validation provides extra confidence for some users.
Kori Krill Oil — Most Convenient (One-A-Day)
Kori simplifies omega-3 supplementation with the only fishery to earn an “A” sustainability rating seven years running, delivered in a convenient one-a-day format.
Kori Krill Oil comes from the world’s #1 global krill oil supplier and the only Antarctic fishery to earn an “A” rating from the Sustainable Fisheries Partnership for seven consecutive years. This isn’t just marketing—it represents genuine environmental stewardship that eco-conscious consumers can trust. The 1200mg one-a-day softgel provides maximum convenience, eliminating the need to remember multiple capsules throughout the day.
Each softgel delivers 250mg of EPA and DHA combined, meeting the USDA recommendation equivalent of two fish servings per week. Kori is naturally a good source of choline (supporting brain and nervous system health) and contains astaxanthin as a natural antioxidant. The phospholipid-bound omega-3s offer superior absorption compared to triglyceride-form fish oils, and the formula digests easily without fishy aftertaste. Independent testing confirms no artificial flavors, colors, or preservatives.
Key Specifications:
- Serving size: 1 softgel (1200mg krill oil)
- Omega-3s: 250mg EPA + DHA
- Choline: Good source
- Astaxanthin: Naturally occurring
- Certifications: “A” rated sustainability, Non-GMO
- Count: 30 softgels (1-month supply)
Considerations: The 30-count bottle provides only one month’s supply, requiring more frequent reordering than competitors offering 60-120 count options. Kori also offers multi-packs that improve per-serving value for committed users.
Dr. Mercola Antarctic Krill Oil — Best Premium
Dr. Mercola’s formula features added organic astaxanthin and fish gelatin capsules for a truly premium krill oil experience.
Dr. Joseph Mercola has built a reputation for uncompromising supplement quality, and his Antarctic Krill Oil reflects that philosophy. Unlike most krill oils that rely solely on naturally occurring astaxanthin, Dr. Mercola adds 2mg of organic astaxanthin from microalgae—ensuring consistent, therapeutic-level antioxidant content in every serving. The formula also includes organic olive oil and organic rosemary leaf extract for additional stability and freshness.
The 1000mg serving provides 220mg of omega-3 fatty acids (120mg EPA, 55mg DHA) and 400mg of phospholipids. Capsules use fish gelatin rather than bovine or porcine gelatin, making this product suitable for pescatarians. Dr. Mercola’s sourcing standards are among the industry’s strictest—GMO-free, gluten-free, soy-free, and manufactured under rigorous quality control. For those who want the absolute best ingredients regardless of price, this formula delivers.
Key Specifications:
- Serving size: 2 capsules (1000mg krill oil)
- Omega-3s: 220mg (EPA 120mg, DHA 55mg)
- Phospholipids: 400mg
- Astaxanthin: 2mg (organic, added)
- Certifications: Non-GMO, Gluten-free, Soy-free
- Count: 60 capsules (30 servings)
Considerations: Dr. Mercola’s premium positioning comes with premium pricing—expect to pay significantly more than budget alternatives. The 30-serving bottle also means monthly reordering for continuous supplementation.
Onnit Antarctic Krill Oil — Best for Athletes
Onnit formulates their krill oil specifically for athletic performance and recovery, with IGEN Non-GMO testing and MSC sustainability certification.
Onnit has built a devoted following among athletes and fitness enthusiasts, and their krill oil reflects this athletic focus. The formula emphasizes the connection between omega-3 fatty acids and exercise recovery, muscle function, and joint health—benefits particularly relevant for active individuals. Professional athletes including NFL linebackers and Olympic athletes have publicly endorsed Onnit’s krill oil for its role in their training regimens.
Each 2-softgel serving delivers 1000mg of krill oil with 240mg omega-3 fatty acids (130mg EPA, 60mg DHA), 400mg phospholipids, and 150mcg astaxanthin. IGEN certification verifies Non-GMO status at the molecular level, while MSC certification confirms sustainable Antarctic harvesting. Onnit’s smaller softgels are easier to swallow than bulky fish oil capsules, and users consistently report no fishy smell or aftertaste—critical for athletes who take multiple supplements daily.
Key Specifications:
- Serving size: 2 softgels (1000mg krill oil)
- Omega-3s: 240mg (EPA 130mg, DHA 60mg)
- Phospholipids: 400mg
- Astaxanthin: 150mcg
- Certifications: IGEN Non-GMO, MSC sustainable, Friend of the Sea
- Count: 60 softgels (30 servings)
Considerations: Onnit’s astaxanthin content (150mcg) is lower than competitors like NatureMyst (1500mcg) or Viva Naturals (1600mcg). Athletes prioritizing antioxidant support may want to supplement with additional astaxanthin or choose a higher-concentration formula.
MegaRed Extra Strength 500mg — Best for Beginners
MegaRed Extra Strength’s smaller 500mg softgels provide an easy entry point for those new to krill oil supplementation.
For first-time krill oil users or those who struggle with larger capsules, MegaRed Extra Strength 500mg offers the perfect introduction. The smaller softgels are noticeably easier to swallow than 1000mg alternatives, while still delivering the core benefits of phospholipid-bound omega-3s, astaxanthin, and sustainable Antarctic sourcing. This makes it ideal for individuals transitioning from traditional fish oil who want to test krill oil before committing to higher doses.
The formula uses MegaRed’s proprietary PureTech processing for exceptional purity—the brand claims their process removes impurities to deliver krill oil that’s 3X purer than standard products. Clinical studies show MegaRed can increase omega-3 index levels within 30 days, even at this moderate dose. The Sure Dissolve softgel technology ensures rapid breakdown in the stomach, minimizing any potential for fishy aftertaste or digestive discomfort.
Key Specifications:
- Serving size: 1 softgel (500mg krill oil)
- Omega-3s: Standardized EPA/DHA content
- Phospholipids: Included
- Astaxanthin: Naturally occurring
- Certifications: MSC sustainable, PureTech process
- Count: 90 softgels (3-month supply)
Considerations: The 500mg dose delivers less omega-3s than 1000mg alternatives, so users with specific health goals may need to take multiple softgels or upgrade to higher-strength options. However, for maintenance supplementation, the Extra Strength formula provides adequate omega-3 support.
Bronson Antarctic Krill Oil 1000mg — Best Value Per Serving
Bronson’s 1000mg formula delivers the best per-serving value while maintaining pharmaceutical-grade quality standards.
For cost-conscious consumers seeking long-term supplementation, Bronson’s 1000mg krill oil offers exceptional value without sacrificing quality. The 120-softgel bottle provides 60 servings—a full two-month supply—at a price point significantly below premium brands. This makes it ideal for families, couples, or anyone committed to ongoing omega-3 supplementation who wants to minimize per-serving costs.
Like their 2000mg formula, Bronson’s 1000mg krill oil undergoes laboratory testing at their New York cGMP-certified facility for heavy metals and contaminants. The formula delivers omega-3 fatty acids, phospholipids, and astaxanthin from superior-sourced Antarctic krill. Bronson’s six-decade heritage in supplement manufacturing provides confidence in their quality control processes, even at budget-friendly price points. The product is free from GMOs, gluten, and soy.
Key Specifications:
- Serving size: 2 softgels (1000mg krill oil)
- Omega-3s: ~200mg (EPA 120mg, DHA 80mg)
- Phospholipids: Included
- Astaxanthin: ~200mcg
- Certifications: Heavy metal tested, Non-GMO, Gluten-free, cGMP
- Count: 120 softgels (60 servings)
Considerations: Bronson doesn’t carry premium certifications like MSC, IFOS, or IKOS that verify sustainability and purity through independent third parties. Users who prioritize these credentials should consider Sports Research or Viva Naturals instead.
Buying Guide: What to Look for in Krill Oil
Omega-3 Content (EPA and DHA)
The primary reason most people take krill oil is for omega-3 fatty acids—specifically EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Look for products that clearly list EPA and DHA amounts separately, not just “total omega-3s.” Quality supplements typically provide 200-340mg of combined EPA/DHA per serving. Higher isn’t always better, but ensure you’re getting enough to meet your health goals.
Phospholipid Content
Krill oil’s key advantage over fish oil is its phospholipid-bound omega-3s. Phospholipids improve absorption and may allow krill oil to deliver benefits at lower doses than triglyceride-form fish oils. Premium products list phospholipid content, typically ranging from 400-575mg per serving. If a product doesn’t disclose phospholipid levels, consider it a red flag.
Astaxanthin Levels
Astaxanthin is the powerful antioxidant that gives krill their red color and distinguishes krill oil from fish oil. Look for products with 150mcg-2mg of astaxanthin per serving. Some premium brands add extra astaxanthin from microalgae sources to ensure consistent, therapeutic levels. Higher astaxanthin content may provide additional benefits for skin health, eye function, and cellular protection.
Third-Party Certifications
Quality krill oil should carry independent certifications that verify purity, potency, and sustainability. Key certifications include: IFOS (International Fish Oil Standards) for purity testing, IKOS for potency verification, MSC (Marine Stewardship Council) for sustainable fishing, and Friend of the Sea for environmental responsibility. Products with multiple certifications provide the highest confidence in quality.
Sustainability Sourcing
Antarctic krill populations are carefully managed to protect this foundational species in the ocean food chain. Choose products from suppliers committed to sustainable harvesting—MSC certification is the gold standard. Brands like Kori boast “A” ratings from sustainability organizations, while companies like Aker BioMarine (which supplies Superba krill oil) use proprietary Eco-Harvesting technology that eliminates bycatch.
Manufacturing Standards
Ensure your krill oil is manufactured in cGMP-certified facilities with third-party testing for heavy metals, PCBs, and other contaminants. Marine-sourced supplements can accumulate toxins, so independent testing is essential. Quality brands test each batch and make results available upon request or directly on their websites.
Red Flags to Avoid
- Products that don’t list EPA and DHA separately
- No mention of phospholipid content
- Missing third-party testing or certifications
- Unusually low prices that suggest inferior sourcing
- Artificial colors, flavors, or preservatives
- No clear information about Antarctic sourcing
How to Take Krill Oil
Recommended Dosage
Most research on krill oil uses doses ranging from 1000-3000mg daily. For general health maintenance, 1000mg per day (typically 1-2 softgels depending on product) is sufficient. Those with specific health goals may benefit from higher doses—up to 2000-3000mg daily—though it’s wise to start lower and increase gradually. The American Heart Association recommends 250-500mg of combined EPA/DHA daily for general health.
Best Time to Take
Take krill oil with food, ideally a meal containing some fat, to optimize absorption. The phospholipid structure of krill oil makes it more forgiving than fish oil regarding meal timing, but fatty meals still enhance uptake. Morning or evening dosing works equally well—choose whichever time fits your routine for consistent daily use.
Usage Instructions by Form
Standard softgels should be swallowed whole with water during meals. If you struggle with capsule size, try taking them with applesauce or a spoonful of yogurt. Caplique capsules (Viva Naturals) and Sure Dissolve softgels (MegaRed) are designed for easy swallowing and rapid breakdown. Never chew or puncture krill oil capsules—the oil has a strong taste that’s unpleasant on its own.
Duration and Consistency
Krill oil benefits accumulate over time—most studies show measurable changes in omega-3 index within 30 days of consistent use. For joint comfort and other benefits, 8-12 weeks of daily supplementation may be needed to notice improvements. Krill oil is safe for long-term daily use and works best as part of an ongoing wellness routine rather than occasional supplementation.
Potential Benefits of Krill Oil
Cardiovascular Support
Research suggests krill oil may support heart health through multiple mechanisms. Studies indicate krill oil supplementation may help maintain healthy triglyceride levels and support beneficial HDL cholesterol. The omega-3 fatty acids EPA and DHA contribute to normal heart function, and krill oil’s phospholipid delivery system may enhance these cardiovascular benefits compared to standard fish oil.
Joint Comfort
Krill oil has shown promise for supporting joint health and comfort. A 2007 study found that 300mg of krill oil daily significantly reduced joint discomfort, stiffness, and functional impairment in participants. The combination of omega-3s and astaxanthin may help maintain healthy inflammatory responses in joint tissue, though individual results vary.
Brain Health
Omega-3 fatty acids, particularly DHA, are essential components of brain cell membranes. Research suggests adequate omega-3 intake may support cognitive function, memory, and mood. Krill oil’s phospholipid-bound omega-3s can cross the blood-brain barrier effectively, potentially making them more available to brain tissue than triglyceride-form fish oils.
Skin Health
The astaxanthin in krill oil provides antioxidant support that may benefit skin health. Some studies suggest krill oil supplementation may help maintain skin hydration and elasticity. Astaxanthin’s ability to neutralize free radicals may protect skin cells from oxidative stress caused by UV exposure and environmental factors.
Absorption Advantage
Perhaps krill oil’s most significant benefit is its superior absorption compared to fish oil. Research indicates krill oil’s phospholipid-bound omega-3s may be absorbed up to 68% more effectively into red blood cell membranes than triglyceride-form fish oil. This enhanced bioavailability means you may achieve meaningful omega-3 levels with lower doses.
Safety and Side Effects
Potential Side Effects
Krill oil is generally well-tolerated, with most users experiencing no adverse effects. The most common side effects are mild and digestive in nature: occasional stomach upset, fishy aftertaste, loose stools, or indigestion. These effects are typically less common and less severe than those associated with fish oil, thanks to krill oil’s phospholipid structure. Taking krill oil with food usually minimizes digestive issues.
Who Should Avoid Krill Oil
Individuals with shellfish allergies should not take krill oil, as krill are crustaceans and may trigger allergic reactions. Those with seafood allergies should consult their healthcare provider before starting krill oil supplementation. People with bleeding disorders or those scheduled for surgery should also exercise caution, as omega-3s may have mild blood-thinning effects.
Drug Interactions
Krill oil may interact with blood-thinning medications including warfarin (Coumadin), aspirin, and other anticoagulants. The omega-3 fatty acids in krill oil have mild antiplatelet effects that could enhance these medications’ blood-thinning properties. If you take blood thinners, anti-inflammatory medications, or blood pressure medications, consult your healthcare provider before starting krill oil.
Special Populations
Pregnant and breastfeeding women should consult their healthcare providers before taking krill oil. While omega-3s are beneficial during pregnancy, some providers prefer to recommend specific prenatal formulations. Children should only take krill oil supplements formulated for pediatric use and under healthcare provider guidance.
Frequently Asked Questions
Is krill oil better than fish oil?
Krill oil offers several advantages over traditional fish oil: omega-3s bound to phospholipids for better absorption, naturally occurring astaxanthin for antioxidant support, and typically fewer digestive side effects like fishy burps. However, fish oil remains effective and is often less expensive. The “better” choice depends on your priorities—krill oil may provide more benefits per milligram, but fish oil can achieve similar results at higher doses.
How long does it take for krill oil to work?
Research shows krill oil can measurably increase omega-3 index levels within 30 days of consistent daily use. However, noticing benefits like improved joint comfort or skin health may take 8-12 weeks. Cardiovascular benefits accrue over months to years of regular supplementation. Consistency matters more than dose—daily use produces better results than sporadic supplementation.
Can I take krill oil with other supplements?
Krill oil generally combines safely with most supplements including multivitamins, vitamin D, and CoQ10. Some practitioners recommend pairing krill oil with vitamin D for enhanced absorption. However, avoid combining krill oil with other omega-3 supplements unless directed by a healthcare provider, as excessive omega-3 intake can increase bleeding risk. Always disclose all supplements to your healthcare provider.
Why is krill oil so expensive?
Krill oil costs more than fish oil due to several factors: Antarctic krill must be harvested from remote, pristine waters using specialized vessels; the oil extraction process preserves delicate phospholipids; and sustainability certifications require careful fishery management. Premium brands also invest in third-party testing and quality certifications. However, krill oil’s enhanced absorption may mean you need less product to achieve similar omega-3 levels compared to fish oil.
Does krill oil cause fishy burps?
Krill oil is significantly less likely to cause fishy burps than traditional fish oil. The phospholipid structure allows krill oil to mix with stomach contents rather than floating on top like triglyceride-form fish oil, which typically causes reflux and aftertaste. Quality brands like MegaRed and Viva Naturals specifically formulate their products to eliminate this common complaint.
Is krill oil sustainable?
When sourced responsibly, krill oil can be sustainable. Antarctic krill is one of the most abundant biomasses on Earth, and catch limits are set far below sustainable levels by international agreements. Look for MSC certification or products from suppliers like Aker BioMarine that use Eco-Harvesting technology to minimize environmental impact. Brands like Kori come from fisheries with “A” sustainability ratings.
Can vegetarians take krill oil?
No, krill oil is not suitable for vegetarians or vegans as it’s derived from crustaceans (small shrimp-like animals). Vegetarians seeking omega-3 supplementation should consider algal oil, which provides DHA and EPA from algae sources without animal products. Note that most krill oil softgels also contain gelatin, making them unsuitable for strict vegetarians.
What’s the difference between krill oil brands?
Key differences between krill oil brands include: omega-3 and astaxanthin concentrations, phospholipid content, third-party certifications (IFOS, IKOS, MSC), capsule technology (standard vs. enteric-coated vs. Caplique), and price. Premium brands typically offer higher concentrations, more certifications, and better absorption technology. Budget brands may provide adequate omega-3s but with less transparency about sourcing and testing.
Bottom Line
For most people: Sports Research Antarctic Krill Oil offers the best combination of quality, certifications, and value. The MSC-certified Superba2 formula delivers clinically meaningful omega-3 levels in a single daily softgel.
For budget-conscious buyers: Bronson Antarctic Krill Oil 1000mg provides excellent per-serving value without sacrificing quality. The 120-count bottle offers a two-month supply at a fraction of premium prices.
For maximum omega-3 intake: NatureMyst Krill Oil delivers the highest omega-3 concentration among pure krill oil supplements, with 340mg of EPA/DHA per serving plus substantial astaxanthin content.
For those sensitive to fish oil: Viva Naturals Antarctic Krill Oil features Caplique capsule technology specifically designed to prevent fishy burps and aftertaste, making it ideal for users who’ve struggled with omega-3 supplements before.
For ultimate convenience: Kori Krill Oil provides a true one-a-day formula with the industry’s highest sustainability credentials—perfect for busy individuals who want simplicity without compromising quality.
