Atlantic cod has played an important role in the history of Europe, stringing together many great civilizations and is the most important catch in the Nordic countries. During World War II, the cod trade accounted for more than 70% of Iceland's trade and became the driving force behind Iceland's development. The Nordic region is located in the high latitudes, and the perennial lack of sunlight makes it difficult for the human body to synthesize enough vitamin D, so the Nordic people turned their attention to cod liver oil, which is rich in vitamin D. The waters off Norway and Iceland are one of the best producers of wild Atlantic cod, and LYSI cod liver oil comes from here.
 
LYSI is the largest fish oil company in Iceland, founded in 1938, and is also one of the world's largest natural cod liver oil production enterprises, with professional cod liver oil production equipment, which can minimize the oxidation of oil.
 
LYSI fish oil products can be divided into three types: cod liver oil, mixed fish oil, and compound series, and the raw materials are derived from wild-caught deep-sea fish, and no other non-Arctic fish products are added, and this statement has been officially confirmed by the Icelandic state. At present, LYSI adopts a direct sales method in the Chinese market, and there are no other agency channels, and the cod liver oil sold is the local version of Iceland, and its capsule cod liver oil ratio is different from the export version on the official website, and the vitamin D content is higher, which is 5μg/capsule (200IU). If you buy through other methods such as purchasing agents, you need to pay attention to whether it is fake.
 
In terms of cod liver oil products, LYSI has two types of cod liver oil: liquid and softgel. Lemon Cod Liver Oil is a bottled liquid form that has higher levels of Omega-3 and vitamins A and D than the capsule type, but the vitamin A/D ratio of the capsule type is closer (in SI units) to about 1:1. In terms of specific effectiveness, the capsule type is more suitable for infants and young children, and young infants (under 6 years old) can meet the vitamin D intake needs with 2 capsules per day. In the case of meeting the recommended daily allowance of 400 IU of vitamin D, it is reasonable for children over 6 years of age not to increase the amount of vitamin D if they are not deficient. The liquid type is more suitable for teenagers and adults, and can accept higher concentrations, because the liquid type is made with a lemon flavor, it also avoids the fishy smell of cod liver oil, which is conducive to consumption.
 
One thing to be wary of when taking cod liver oil is excessive vitamin intake, A and D are fat-soluble vitamins that accumulate in the human body, especially infants and young children, who are more sensitive than adults. According to the recommended amount of LYSI, children over 6 years old should take 3~4 capsules of cod liver oil or 8~10ml of cod liver oil daily. Based on this dosage calculation, compared with the table of "Recommended Dietary Vitamin Intake for Chinese Residents", vitamin D will be slightly higher than the recommended range, but it is also within the safe range, and it is recommended that infants and young children and those with sufficient vitamin intake can reduce the dose by half to avoid unnecessary excessive intake.
 
As for vitamin poisoning, in fact, it is not so easy, adults have a strong tolerance to vitamins, and generally have to eat many times or even more than 10 times the recommended amount every day, and it may be poisoned for a period of time, so there is no need to panic too much. However, if vitamin A is consumed in high doses every day in early pregnancy, the risk of giving birth to a malformed baby increases, so extra attention is required.
 
The amount of vitamin A and D that people need to consume more per day is not fixed, which is related to diet and lifestyle habits. Infants and young children who receive less vitamin D from breast milk and need to be supplemented with LYSI capsule cod liver oil, which does not need to be supplemented if the milk contains sufficient vitamins when formula fed.
 
In China, the definition of cod liver oil includes shark liver oil in addition to cod liver oil, and LYSI also has such products. LYSI Shark Liver Oil contains no vitamin D, only a small amount of vitamin A, and the main component is alkoxyglycerol (AKGS). From the perspective of health care, there are no scientific tests to prove that the health ingredient squalene (containing AKGS) in shark liver oil has the effects of delaying aging, protecting the liver, and anti-cancer, so it is not recommended to buy.
 
Cod liver oil products are natural vitamin and Omega-3 supplements that carry a certain amount of environmental pollutants, so be aware of the risk of contamination. Infants, young children and pregnant women are sensitive to contaminants and are not suitable for eating fish at the top of the food chain such as tuna, shark and mackerel, because they accumulate more heavy metals such as methylmercury through bioaccumulation, which increases the risk of harm. Another of LYSI's main products, tuna blended cod liver oil, uses tuna fish oil, which is still not recommended for purchase even after heavy metal removal.