In addition to all the benefits of our Omega-3 formula, offering 690 mg of naturally concentrated omega-3s, each serving of Omega-3D includes 25 mcg (1000 I.U.) of vitamin D3, meeting the daily recommendation for children and adults who do not receive adequate sun exposure. Vitamin D3 is the natural form of vitamin D produced by the body, and is better absorbed and utilized than other forms. This powerful formula offers combined support for a healthy heart and brain, bones, mood, and immunity.*Nordic Naturals is Committed to Delivering the World's Safest, Most Effective Nutrients Essential to Health. Nordic Naturals is the #1 selling fish oil in the US with over 150 products in a variety of flavors and doses to meet everyone's nutritional needs. We strive to provide high-quality products straight from the manufacturer to your home through sustainable methods and using nothing but natural ingredients. Nordic Naturals incorporates ethical and socially responsible practices with regard to the environment, corporate transparency, philanthropic partnerships, and education. Our continued innovation is proof that when values are aligned with action, great things can happen.*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.