Domestic Refined Shark Liver Oil" is extracted from the livers of blue tooth sharks and mouka sharks landed in the Tohoku region, including Kesennuma City, Miyagi Prefecture, which is famous for having the largest shark catch in Japan. The product was successfully made into a raw material through joint research with Miyagi University. The active ingredients are standardized at more than 20% DAGE, 3.5% DPA, 10% DHA and 5% EPA.