1. Nutritional components of cod liver oil Cod liver oil is a food rich in nutrients. The main components include vitamins A, D and Omega-3 fatty acids. Among them, vitamin A is an important substance for maintaining eye health and promoting immune function; vitamin D helps the body absorb calcium and maintain bone health; Omega-3 fatty acids are beneficial to cardiovascular, neurological and immune aspects. 2. Types of cod liver oil suitable for babies When choosing cod liver oil suitable for babies, you need to pay attention to the following points: 1. Give priority to wild-caught deep-sea fish, such as salmon, saury, etc.; 2. Confirm the product.