Cod Liver Oil

Cod liver is a source of omega 3 fatty acids in the form of EPA and DHA. However, typical cod liver oil composition is only EPA 12%, DHA 9%, quantities which are less concentrated than in oil taken from the whole fish.

Although Cod liver oil is a significant source of the fat soluble vitamins A and D, achieving therapeutic doses of EPA and DHA may result in undesirably high levels of vitamin A and D intake. A fish oil concentrate may therefore be a better choice.

What it does

  1. Growth and Development: Cod liver oil contains vitamin A, a fat soluble nutrient that influences growth and development. Deficiencies of vitamin A are especially apparent in the lining of the cornea of the eyes, respiratory tract, intestinal tract, skin, urinary tract and the ducts of secretory glands.
  2. Skin Health: Vitamin A supplementation from cod liver oil has been shown in research to benefit various skin disorders such as acne, dermatitis and psoriasis.
  3. Eye Health:
    Vitamin A is needed by the rods and cones in the eye’s retina, responsible for night and daytime vision respectively.
  4. Bone Health:
    Cod liver oil contains vitamin D, an important nutrient that facilitates the absorption of calcium from the gut.
  5. Cardiovascular Health: EPA from fish oils have an antithrombotic effect, lipid (triglyceride) lowering, reduced blood and plasma viscosity, and improvements in endothelial dysfunction. Omega 3 fatty acids have been shown to inhibit the activity of a chemical called thromboxane which causes platelets to stick together.
  6. Cholesterol:
    Fish oils appear to reduce triglycerides in addition to improving the ratio of HDL and LDL cholesterol.
  7. Hypertension: Omega 3 fatty acids are increased, especially when taken in the form of fish oils have a blood pressure lowering effect.
  8. Inflammatory Conditions:
    Omega 3 fatty acids suppress the production of inflammatory compounds produced by white blood cells.

Potential Uses

Osteo arthritis Cardiovascular disease Eye Health
High blood pressure Cholesterol


Due to its very high levels of vitamin A and vitamin D. cod liver oil should not be taken by women who are or who could become pregnant before consulting a doctor.

Other adults should consult their doctor before taking cod liver oil (or other supplements) containing more than 25,OOOIU (7,500 meg) of vitamin A per day or 800 IU of vitamin D per day.

Do not use with warfarin or anti-coagulant medications with cod liver oil.

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