FAQsHow can I be sure that these products are mercury and contaminant free? How do I store cod liver oil? How do I know that this cod liver oil hasn’t gone rancid during processing? Is it safe for children and babies to use cod liver oil? Is it safe to use cod liver oil during pregnancy? Is it safe to take higher dosages than what is recommended on the bottle?
How can I be sure that these products are mercury and contaminant free? The cod used to make Green Pasture products is fished from the Arctic Ocean which is known to have low levels of pollution. All products are tested according to protocols of the Association of Analytical Communities (AOAC) and approved free of detectable levels of 32 contaminants. We guarantee this product to be free of contaminants including mercury. Furthermore, mercury is water soluble. It may be present in the flesh of fish, but not present in the oil (another advantage of using liver oil).
How do I store cod liver oil? Once you open your cod liver oil it can be stored in fridge– although not essential if you consume within 2 months of opening. Make sure you keep your oil in a cool dark cool place out of direct sunlight.
How do I know that this cod liver oil hasn’t gone rancid during processing? Firstly see the question about storage above. Green Pasture high vitamin cod liver oil is thicker and more stable than lower lighter grade cod liver used by other companies. Plant sterols are used as a natural antioxidant. Testing shows that the oxidation levels (a measure of rancidity) of Green Pasture cod liver oil are extremely low.
Is it safe for children and babies to use cod liver oil? Absolutely. In fact it’s essential.
- Infants should receive at least 400 IU of vitamin D per day from all food sources to protect against overt vitamin D deficiency.
- Infants can obtain vitamin D from breast milk, sunshine and supplements such as cod liver oil.
- Breast milk can be a poor source of vitamin D or an excellent source of vitamin D, depending on the mother's intake (mothers should supplement with vitamin D)
- We would recommend using the children’s dosages guide on the bottle.
Here’s a chart showing the roles how growing bodies use vitamins A, D, and K (which are in high levels in Green Pasture cod liver oil):

Is it safe to use cod liver oil during pregnancy? Cod liver oil is essential for mother and baby’s health. Click here for a good article on the benefits of cod liver oil during pregnancy
Is it safe to take higher dosages than what is recommended on the bottle? To the best of our knowledge, toxicity from cod liver oil has never been documented. Synthetic vitamin A and D on the other hand are toxic and cases of toxicity have been reported. If you're looking at other brands please find out EXACTLY how they process their oil. ALL other commercial brands remove natural vitamins A and D during processing then add back in low levels or synthetic (even worse) vitamins - AVOID THESE! Nature has provided natural cod liver as a safe vitamin A and D supplement.
Recommended daily doses of vitamins A and D from cod liver oil are:
- Children age 3 months to 12 years: 5000 IU vitamin A, 500 IU vitamin D daily
- Children over 12 years and adults: 10,000 IU vitamin A, 1000 IU vitamin D daily
- Pregnant and nursing women: 20,000 IU vitamin A, 2000 IU vitamin D daily
Note that this is considerably higher than stated on the product containers. Click here for a good article on cod liver oil doses and toxicity
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