Krill phospholipids are omega-3 fats extracted from Antarctic krill and packaged in a phospholipid structure — the same form your cell membranes are made of. This makes them uniquely easy for the body to absorb and put to work compared to the triglyceride form found in most fish oils. They also come naturally bundled with astaxanthin, a potent antioxidant that protects the delicate omega-3 fats from going rancid inside your body.

Because the EPA and DHA in krill are attached to phospholipids rather than triglycerides, they're transported directly into cells much more efficiently — studies suggest you need a smaller dose to reach the same blood levels as standard fish oil. The phospholipid carrier also doubles as a building block for cell membranes, supporting brain cell signaling, reducing inflammatory messengers, and helping the liver manage fat and cholesterol metabolism. Astaxanthin works alongside, protecting tissues from oxidative damage.

Softgel and hard-shell capsules are the most common forms and protect the oils from oxidation. Liquid krill oil exists but is less shelf-stable. Most clinical research has used encapsulated krill oil products standardized to a specific phospholipid and astaxanthin content. Look for products that list total phospholipid content (ideally 40%+) alongside EPA and DHA amounts.

• High triglycerides and cholesterol
• PMS and period-related mood and pain
• Joint pain and inflammation
• Brain health and memory
• Dry eyes
• Liver fat (non-alcoholic fatty liver)
• Inflammation and oxidative stress
• Low omega-3 status
• Perimenopause symptoms
• ADHD-related attention difficulties (children and adults)

• Omega-3 deficiency in people who do not eat fatty fish regularly
• Progression of early dry eye disease with consistent long-term use
• Further rise in triglycerides in people with borderline-high levels

• Krill (whole) — The direct source — whole krill contain the same phospholipid-bound EPA, DHA, and astaxanthin found in krill oil, though not concentrated in supplement form. Consumed as food in Japan and some coastal communities.
• Wild salmon — Rich in EPA and DHA; wild-caught salmon also contains meaningful astaxanthin (from eating krill), making it the closest dietary parallel to krill oil's nutrient profile.
• Sardines — One of the most concentrated omega-3 foods available — high in EPA and DHA with a good phospholipid fraction in the whole fish, especially when eaten with the skin.
• Mackerel — High in EPA and DHA, affordable, and widely available — a strong dietary omega-3 source that supports the same cardiovascular and anti-inflammatory pathways as krill phospholipids.
• Eggs (from omega-3 enriched hens) — Egg yolks are a meaningful source of phosphatidylcholine — the same phospholipid backbone that makes krill oil uniquely bioavailable — supporting brain and liver health through the same mechanism.

• Mild fishy aftertaste or breath (less common than with fish oil)
• Nausea or stomach discomfort, especially on an empty stomach
• Loose stools or diarrhea at higher doses
• Headache (uncommon, typically resolves with continued use)
• Allergic reaction in people sensitive to shellfish (rare but potentially serious)
• Increased bleeding time at very high doses — relevant before surgery

• Recommended daily: 500–1000 mg krill oil daily for general health and omega-3 maintenance; 1000–2000 mg daily for targeted benefits (triglycerides, joint pain, PMS). Doses are typically expressed as total krill oil — check the label for actual EPA + DHA content, which should be at least 150–250 mg EPA/DHA per serving.
• Best time of day: Morning or with your largest meal of the day — consistent timing improves compliance and absorption.
• With or without food: Always take with food. The phospholipid form absorbs better in the presence of dietary fat, and taking with food significantly reduces the chance of nausea.
• Time to effect: Most people notice changes in mood, PMS symptoms, or joint comfort within 2–4 weeks; cardiovascular and lipid changes typically require 6–8 weeks of consistent use.
• How long to take it: Safe for long-term continuous use. No cycling required. For PMS specifically, some protocols use higher doses in the 2 weeks before menstruation. Reassess omega-3 status annually if possible.