Dietary Supplement. Complete Blend of Nutritional Oils. Support Heart, Brain, Vision & Joint Health. Enteric Coated & Citrus Flavor *. Support Normal, Healthy Immune Function. Core Series Fuel Athletes Safely™. Supplementation the Way Nature Intended. MP Core Fish Oil Essential Fatty Acids, or EFAs, are essential to the human body but can only be found in a few species of fish. Athletes supplement their diets with fish oil because research suggests fish oil s fatty acids can assist with heart function, carbohydrate breakdown and joint health.