Nordic Naturals Algae Omega Vegetarian Omega-3 is made from sustainably-sourced microalgae, non-GMO and hexane-free. And because it contains no fish or animal products, it’s also suitable for vegans. It can be difficult for vegans and vegetarians, especially, to get enough essential omega-3 fats from food alone. That’s because vegetarian sources of omega-3 provide only ALA (alpha-linolenic acid), a precursor to omega-3s EPA and DHA, which our bodies can’t efficiently convert to the EPA and DHA they need. To get just 500 mg omega-3 EPA+DHA, you’d have to eat a 5-ounce bag of flax or chia seeds.