Essential fatty acids (EFAs) are fatty acids that we must consume because the body cannot synthesize them. They are required for biological processes. The two types of EFAs the body needs are alpha-linolenic acid (omega-3) and linoleic acid (omega-6). EPA and DHA are omega-3 fatty acids. Food sources of these EFAs include fish, shellfish, hemp seed, flaxseed, soya oil, canola oil, chia, pumpkin and sunflower seeds, leafy veggies and walnuts. They also come in supplement form. Seroyal offers an essential fatty acid supplement called Omega EFA Liquid that has high concentrations of EPA and DHA.