Blackmores Evening Primrose oil + Fish oil is a rich natural source of the omega-6 fatty acid gamma-linolenic acid (GLA) from evening primrose oil and the omega-3s EPA and DHA from fish oil - In one convenient capsule. Lifestyle factors such as high dietary levels of saturated fat, ongoing high stress levels, alcohol consumption and smoking may all affeact essential fatty acid metabolism, compromising the body's levels of these "good" fats, which are important for the maintenance od general health and wellbeing. Fish oil is regularly tested for mercury, so you can take Blackmores with confidence.