RxOmega-3 Factors™ is a pharmaceutical grade liquid fish oil concentrate providing the essential fatty acids EPA and DHA. Supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease RxOmega-3 Factors™ is a pharmaceutical grade liquid fish oil concentrate providing the essential fatty acids EPA and DHA. Supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease*.