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Fermented Cod Liver Oil (FCLO) 101

Fermented Cod Liver Oil (FCLO) 101

Fermented Cod Liver Oil (aka FCLO) is a hard-to-miss healthy buzzword these days, and it is something everyone in the family can benefit from. For anyone familiar with Weston A Price and the GAPS diet, fermented cod liver oil is a staple for aiding functions of the brain and nervous system for children and adults. The benefits of this superfood far outweigh the stigma of a “fishy” flavor and those who use this supplement swear by it. I got on the FCLO train when I began my journey to healing my tooth decay naturally, and I’ve been a believer ever since.

Regular FCLO











Orange Flavored












Butter Oil



What is FCLO?

“Fermented cod liver oil is a cold-processed form of oil that is gently made from cod livers. The fermentation process allows the oil to be separated from the livers without damaging the vitamin or polyunsaturated fatty acid (omega 3/EPA/DHA) content of the oil. This oil is then gently purified and then combined with flavorings (except in unflavored varieties) and bottled or placed into capsules.” (source)


Whats are its uses?

  • Cod liver oil contributes to bone health, preventing bone and muscle pain and joint pain.
  • Vitamin-rich cod liver oil has been shown to support the health of pregnant women by improving the fatty acid profile of their breast milk to optimize brain health in the infant.
  • Traditionally, infants were given cod liver oil to support immune health until Dr. Spock began to recommend vaccinations in its place.
  • Vitamin A has long been shown to aid in vision health in diabetics and non-diabetics alike.
  • FCLO promotes proper absorption of calcium and magnesium, thereby helping to normalize blood pressure.
  • Inflammatory conditions like colitis and Crohn’s have been shown to improve with the type of omega 3s in FCLO moreso than with the medications often prescribed.
  • Taken orally or applied topically, fermented cod liver oil helps to improve the quality of skin, both on the face and for issues of rashes, diaper rash, wrinkles, and more.
  • The vitamin A in fermented cod liver oil has been shown to be protective against cancer.


 Benefits of Fermented Cod Liver Oil:

Courtesy of

1. Vitamin D

Vitamin D is not really a vitamin, but one of the oldest prohormones (a substance that can be converted to a hormone). Vitamin D is critically important for the development, growth, and maintenance of a healthy body, beginning with gestation in the womb and continuing throughout the lifespan.

Vitamin D deficiency is often associated with rickets. ALso, it’s clear it has a function in maintaining healthy bones since bone softening diseases like osteomalacia and osteoporosis have been associated with low levels of vitamin D.

But beyond our bones, vitamin D deficiency has been linked to congestive heart failure, several cancers, Multiple Sclerosis, Type I Diabetes and high blood pressure. Additionally, people with significantly low levels of vitamin D have been shown to be more susceptible to colds and flu viruses.

Not only that, but vitamin D has been shown to help protect people from diseases like Parkinson’s, Alzheimer’s, and Fibromyalgia. It also helps with skin infections. Oh yeah, it also protects against skin cancer and Rheumatoid Arthritis. (Learn more about the power of vitamin D)

And guess what? It’s estimated that more than 70% of Americans are deficient in Vitamin D.

So how do I get more vitamin D?

Direct sunlight is a great source… assuming it’s the right time of year, you don’t wear sunscreen, you live in the right place, and you actually get outside during the right hours. Not always easy.

The best food source? That’s right: Fermented Cod Liver Oil.

2. Vitamin A

Consider these reasons for making sure you have enough vitamin A:

  • Vitamin A is important for vision
  • Vitamin A regulates genes
  • Vitamin A supports the immune system
  • Vitamin A is important for red blood cell production

And to top it off: Vitamin A is a co-factor for Vitamin D, which is why it’s important to have both of these together.

And wouldn’t you know it: Fermented Cod Liver Oil has both Vitamin A and D.

3. Essential Fatty Acids

Beyond being the powerhouse for vitamins A and D, Cod liver oil is also rich in eicosapentaenoic acid (EPA) and docasahexaenoic acid (DHA). The body makes these fatty acids from omega-3 linolenic acid. These essential fatty acids are very important for the proper function of the brain and nervous system.

Fermented Cod Liver Oil: The original super food

It’s little wonder that fermented cod liver oil has been used for so many years. In fact, fermented cod liver oil was often regarded as a critical part of a fertility diet, proving to be essential prior to conception, during pregnancy, and for growing children (in the proper dosage, of course). It’s also one of my family’s immediate “go to” remedies when we feel a cold coming on. It’s powerful stuff.

Why fermented?

It’s important to remember that not all cod liver oil is created equal. Despite the “gross” factor that comes with the idea of fermented cod liver oil, it’s really the best option out there.” (source)

 Can You Hide It?

I’ve been told to mix the fermented cod liver oil in with various things to make it more palatable, such as:


For dosing instructions see these: Cod Liver Oil Basics and Recommendations


Also check out: 5 Things Every Pregnant Woman Should Look For in a Prenatal Vitamin

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