Shark liver oil contains a class of lipid compounds called alkylglycerols (AKGs) that are found in only a handful of natural sources: human breast milk, bone marrow, spleen, and liver. These ether lipids play a documented role in white blood cell production and immune resilience, and shark liver oil contains them in higher concentrations than any other accessible source. Deep Defense delivers 1,000mg of wild-caught, responsibly sourced shark liver oil per serving alongside squalene, a natural antioxidant lipid, and naturally occurring Vitamin A. Ancestral whole-food immune nutrition that most supplement categories have not yet caught up with.