Supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease. The natural Cod Liver Oil used in this softgel is molecularly distilled and manufactured under strict quality control standards. It is tested to be free of potentially harmful levels of contaminants (i.e. mercury, heavy metals, PCBs, dioxins, and other contaminants).Not manufactured with wheat, gluten, milk, egg, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens. This extra strength product has more Cod Liver Oil (1,000 mg per softgel) than our Cod Liver Oil 650 mg softgel product.