How do I know the Omega-3 Cod Liver Oil is not rancid?Updated a month ago

Dr. Berg's Cod Liver Oil Quality

Regarding Dr. Berg's Cod Liver Oil, the product is formulated specifically to address these concerns:

Sourcing and Processing: Our formula is made from wild-caught cod liver oil and packaged in the USA. This is done to minimize oxidation and ensure the highest quality.

The TOTOX (Total Oxidation Value) score of our Cod Liver Oil Capsules can vary slightly between lots, but it will always fall within a range that ensures freshness (below 12 meq/kg).

The acronym TOTOX stands for Total Oxidation Value. It is a single, calculated number used in the fish oil industry to measure the overall level of oxidation, or rancidity, in the oil. Essentially, it serves as an indicator of how "fresh" the oil is.

Significance of the Numbers

The typical range provided (10–14, kept below 26) reflects a high standard of quality for a commercial fish oil product:

Industry Standard Limit: The global industry standard typically accepts a TOTOX limit of 26 or sometimes slightly lower. By guaranteeing the value is always kept below 26, the oil meets the strictest international standards for non-rancidity.

Typical Range (10–14): A value in the lower range (below 15) indicates a very fresh, high-quality, and minimally oxidized product. A range of 10–14 confirms that the cod liver oil is being processed quickly, kept cool, and protected from heat, light, and air throughout manufacturing and packaging.

Additionally, the oil is carefully deodorized and refined under controlled conditions to remove impurities, volatile compounds, and free fatty acids that can cause rancidity. This process also significantly reduces potential contaminants such as heavy metals and environmental toxins, while minimizing exposure to oxygen and light during production and storage. Together, these steps stabilize the oil and protect it from oxidation.