A zooplankton crustacean, krill is rich in the omega-3 oils EPA and DHA, as well as phospholipids, including phosphatidylcholine, -inositol, and -ethanolamine. Because of its phospholipid content, Krill Oil can be dosed in smaller amounts than omega-3-containing fish oils.
PCB's are any of a family of industrial compounds produced by chlorination, noted primarily as an environmental pollutant that accumulates in animal tissue with resultant pathogenic and teratogenic effects.