Krill Oil
Commonly used for
Heart HealthInflammation
Where to Buy
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The cheapest product is usually low quality, but more expensive doesn’t always mean better.
The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Krill oil provides EPA and DHA bound to phospholipids, which some research suggests may improve absorption compared to standard fish oil's triglyceride form, alongside the astaxanthin it naturally contains.
How is it used? / Administration
Form: Antarctic krill oil (phospholipid-bound EPA/DHA)
Typical dose studied: Dose by actual combined EPA+DHA content (roughly 150–300 mg per 500–1,000 mg krill oil, depending on product) rather than total krill-oil weight
Timing: With a meal containing some fat to improve absorption
Derived from crustaceans — if you have a known shellfish allergy, discuss with your doctor rather than assuming cross-reactivity either way. More expensive per gram of EPA/DHA than fish oil, with a smaller evidence base.
How well does it work? / Evidence
~ Moderate evidence
Who should avoid it?
Avoid with: Food Allergies
Interacts with: Blood thinners (Warfarin)
Already taking it? May be somewhat better absorbed at lower doses than standard fish oil, though a clinically meaningful advantage isn't well established — fish oil remains the better-studied, more cost-effective default for most people.
Research & references
Ulven SM et al. Krill oil vs fish oil bioavailability. Berge K et al. Krill oil and lipid metabolism.
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