Health From The Sun Black Currant 500 is an Essential Fatty Acid (EFA) Nutritional Oil that naturally supplies a unique amount of both omega-3 Alpha Linolenic Acid (ALA) and omega-6 Gamma-Linolenic Acid (GLA). Black Currant 500 is extracted without chemical solvents such as hexane. It is a BIO-EFA food oil, ensuring the most Bioavailable Essential Fatty Acids. Health from the Sun, The Leader in Essential Fatty Acid Nutrition .