EPA and DHA in krill oil are esterified to phosphatidylcholine (PC) rather than triglycerides. This matters because: (1) phospholipids are water-miscible — they form micelles spontaneously in aqueous gut environment, bypassing the need for bile acid emulsification that triglyceride fish oil requires; (2) phospholipid-bound fatty acids are preferentially incorporated into cell membranes (the functional location for omega-3s) vs triglyceride-bound which primarily enter adipose storage; (3) PC delivery means krill oil simultaneously provides choline (essential nutrient, often deficient). Astaxanthin provides additional antioxidant protection, preventing the "fishy burps" caused by EPA/DHA oxidation in the stomach.
Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.