Natrol Omega-3 is concentrated purified fish oil with both DHA & EPA to support healthy heart function. Today's North American diet is typically low in Omega 3. Sufficient levels of EPA are difficult to achieve on a daily basis unless one eats significant amounts of cold water fish such as salmon or consumes cod liver oil. Unfortunately, oils found in fish or commercial cod liver preparations may be contaminated with various toxic materials such as PCBs. Increasing research reveals the health-promoting properties of Omega-3 fatty acids EPA & DHA in supporting a healthy cardiovascular system. Our Omega-3 is derived from a variety of select fish and is analytically screened to contain less than 1 mg of cholesterol per softgel.