Can I still take expired cod liver oil?
Feb 12, 2025
Source: Cainiu Health
Dr. Bai Hongmei
Introduction
Under normal circumstances, expired cod liver oil should not be consumed. After expiration, its main components, vitamins A and D, may undergo oxidation reactions, leading to a reduction in active ingredients and a significant decrease in the medication's effectiveness. This indicates that expired cod liver oil can no longer provide the intended nutritional benefits and may also develop unpleasant odors and harmful substances.
Generally speaking, expired cod liver oil is not recommended for consumption. The detailed analysis is as follows:
After expiration, the primary components of cod liver oil—vitamin A and vitamin D—may undergo oxidation, leading to a reduction in active ingredients and a significant decrease in the product's efficacy. This means the expired cod liver oil can no longer provide the intended nutritional benefits and may also develop an unpleasant odor and harmful substances.
In addition, cod liver oil that has been stored for a prolonged period is susceptible to bacterial growth, which can cause the product to deteriorate. Consuming such expired cod liver oil may irritate the gastrointestinal tract, causing discomfort symptoms such as abdominal pain, nausea, vomiting, and diarrhea. In severe cases, it may even lead to health problems such as acute gastroenteritis. Particularly for children, the elderly, and individuals with weakened immune systems, the risks associated with consuming expired cod liver oil are even higher.
It is advisable to store cod liver oil in a cool, dry, and light-protected place, ensuring the container is well sealed to prevent exposure to air and moisture that may lead to spoilage.
