Does cod liver oil also contain vitamin D and vitamin A?Updated 9 days ago

Cod liver oil is a valuable, though negligible, source of the natural, fat-soluble forms of vitamins D and A. These vitamins occur naturally in the oil - without any artificial addition or standardization of their content - thanks to biological processes that take place within the fish’s body and, above all, their natural diet. Cod naturally feed on plankton and other organisms that are rich in nutrients, including precursors of vitamins D and A. These nutrients are then stored in the fish’s liver, where they become concentrated in the form of vitamins. As a result, vitamin concentrations may vary slightly depending on seasonal factors and the natural conditions in which the fish live.

How much vitamin D and vitamin A does one serving of Cod Liver Oil contain?

On average, you will find approximately 2000 IU of vitamin D and 21 mcg of vitamin A in 100 ml of this oil. This means that one serving (4 ml) contains approximately 80 IU of vitamin D and 0.88 mcg of vitamin A. These values may vary slightly seasonally, reflecting the natural origin and quality of the product.

What influences the vitamin A and D content in cod liver?

1. The fish’s diet

• Cod obtain vitamins A and D from their natural diet (e.g., plankton, small fish, crustaceans). The quality and composition of their diet vary by season and availability, which in turn affects the composition of the oil.

2. Season and catch location

• During colder periods (especially fall/winter), the vitamin content in the livers tends to be higher due to the accumulation of vitamins from previous months.
• The region where the cod were caught also plays a role in vitamin content, as do factors such as water temperature, food availability, and daylight hours.