Dietary Supplement 100% Pure Salmon Oil Pure Source of Omega-3"s Purity & Potency GuaranteedNatural Factors Wild Alaskan Salmon Oil softgels contain 100% pure salmon oil with a naturally-occurring ratio of nearly 1:1 EPA to DHA. The oil is extracted solely from already harvested salmon, using fish parts that would otherwise be wasted and thereby conserving existing stocks. Natural Factors Wild Alaska Salmon Oil is regularly tested for chemical residue and heavy metals to ensure a safe and pure source of fish oil.All Natural Factors products are manufactured in accordance with the Government of Canada"s Good Manufacturing Practices (GMP), among the highest standards in the world.