source of omega-3 fatty acids that help promote healthy heart and circulatory function.Sundown Salmon Oil is a source of omega-3 fatty acids that help promote healthy heart and circulatory function. It also helps maintain normal triglyceride levels in the blood. Salmon Oil 1000 mg softgels provide EPA and DHA, the important omega-3 fatty acids that support your heart, joints, and immune system. The Sundown Salmon Oil Softgels is selected from finest cold-water fish to provide high-quality omega-3 fatty acids and it’s purified to eliminate heavy metal contaminants such as mercury.