Cod liver oil is called "national treasure" in Norway. It contains both natural vitamins and a certain amount of DHA. It is an ideal natural nutritious food for infants, especially DHA necessary for human body. There is almost no meat, eggs, dairy products and vegetables.

If cod liver oil is based on a bottle, it is recommended to take 2- 10 ml once, three times a day. If it is granular, the method and dosage are adult 1-3 capsules and child 1 capsule.

It is generally believed that adding cod liver oil to children should start from the neonatal period, that is, taking concentrated cod liver oil from 3 to 4 weeks after birth, starting with one drop a day and gradually increasing, but not exceeding 5 drops at most. For premature infants, twins and newborns with digestive tract diseases, cod liver oil should be added from the second week after birth, with a maximum of 5 ~ 7 drops per day, and changed to 3 ~ 5 drops per day after one month. At the same time, you can take a proper amount of calcium, not more than 0.5 grams per day.

In the process of taking cod liver oil, it is necessary to observe the child's stool. If indigestion is found, the dosage of cod liver oil should be reduced appropriately, and then gradually increased after the child adapts and the stool is normal.