Wild Salmon Oil Blend – the oil is purified by molecular distillation and this high-tech process removes most of the harmful toxins It is also formulated with mixed tocopherols (vitamin E) containing both d-alpha tocopherol and gamma tocopherol. It is important to have both forms of vitamin E as d-alpha tocopherol scavenges reactive oxygen species and gamma tocopherol provides protection against reactive nitrogen species which d-alpha tocopherol cannot do.