N(4) - Icelandic Omega-3 Fish Oil30 Day Supply of Ultra Platinum Grade Icelandic Fish Oil A High Performance Nutrition Formulation, N(4) Omega 3 Fish Oil Our advanced, all natural, molecular distillation production methods remove all fish taste and impurities. N(4) is third party tested and guaranteed to have no toxins, no heavy metals, and no PCBs. The specific type of fish oil used in N(4) is proven to help with everything from joint and brain health, to protein synthesis for