My Favorite Cod liver oils!

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This is a question I get asked often. There are so many cod liver oils on the market, but many of these brands only use about half cod liver oil- the other half is made up with synthetic A and D! Yuck-that defeats the purpose of using cod liver oil if half of the nutrients are man-made. So let’s talk about why cod liver oil can be so amazing, and which brands are actually great.

Vitamin A

Autoimmune disorders, leaky gut, inflammation, ATP energy production, food intolerances, and more are connected with vitamin A. Retonic acid impacts about 500 different genes!! This article is probably one of the best I have ever come across. Vitamin A is so important for our healing process, but we do need to go slow with it and support our livers!

Vitamin A is a crucial nutrient needed to heal from copper dysregulation. It is a prime part of creating ceruloplasmin. (Source-PubMed) Most A is stored in the liver so blood tests can’t be very effective in telling us our A stores.  Low ceruloplasmin in the blood and low potassium on the HTMA are good indicators of an A deficiency.

Vitamin A also is key in fixing circadian rhythm. So many people deal with insomnia, daytime fatigue, and they have more energy in the evening. This happens a lot with adrenal issues, and it is a big sign that circadian rhythm is off. (source)

One of the BIGGEST lies we have been told is that beta carotene is the same as vitamin A. While beta carotene is an important nutrient, it has to go through a process to be converted into retinol. In order to make this conversion we need a healthy gut, healthy liver and gallbladder (bile flow is the KEY), and certain enzymes and nutrients (like zinc). From this study, “β-Carotene is absorbed from the intestine and is converted into vitamin A only in the presence of bile acids.”  Using something like Cod liver oil that has retinol helps you get the REAL vitamin A that you need, because we cannot depend on the beta carotene converting.

Vitamin D

There is a lot of hype about vitamin D. So many people push high doses of it without understanding that we are we are meant to get D from the sun and in small amounts from food. Period. You CANNOT bottle sunshine and I find it preposterous that this supplementing fad has continued for so long. Cod liver oil is one of the oldest and most effective ways to supplement vitamin D. We need a lot more vitamin A than vitamin D, and cod liver oil provides this balance.

We also need healthy livers to utilize both A and D. This is why liver support is so crucial for healing! We need these fat soluble vitamins, but we cannot use them properly with sluggish livers.

Vitamin D is still a truly crucial hormone. Vitamin D deficiency signs include chronic infections (including susceptibility for getting the flu), muscle weakness, diabetes, kidney disease, asthma, tooth decay, cancer, depression, and anxiety. This is why Cod liver oil can be great for those that need vitamin D, but don’t want to risk using high dose supplements (which I don’t recommend anyway- you can read why here!)

My Favorite Cod Liver Oils:



  • Made from wild Norwegian Arctic cod from the purest sea water.
  • Processed within 24 hours in effective and gentle manner.
  • Separated from fresh cod fish livers using cold pressed purifying technologies without the use of chemicals.
  • Regularly tested for freshness and purity by an independent, FDA-registered laboratory.
  • Proven to be free of detectable levels of mercury, cadmium, lead, PCB’s and 28 other contaminants.
  • Available unflavored or with a hint of organic peppermint oil and/or lemon oil.
  • Vitamin A – approximately 2500 iu per serving
  • Vitamin D- approximately 250 iu per serving
  • One bottle has 95 servings- one of the BEST values you will find



  • Naturally Occurring Vitamin D3 (400-500 IU per teaspoon)
  • Naturally Occurring Vitamin A (3000-5000 IU per teaspoon)
  • EPA (Approx. 510 mg/teaspoon)
  • DHA (Approx. 700 mg/teaspoon)
  • Raw and Soy Free
  • Bottled Fresh in Norway
  • No chemicals, solvents and mechanical devices used during the extraction process
  • Oil is completely unrefined and produced under the total absence of heat
  • One bottle lasts for one month at 1 teaspoon daily dose; 2 months at 1/2 teaspoon daily dose

Perfect Supplements has both of these cod liver oil brands: NutraPro and Rosita’s. They also have NutraPro’s Butter oil to help increase absorption of the CLO! Use my code SASSY for 10% off! They also offer free domestic shipping for orders over $99 and have a money back guarantee on unopened bottles of the CLO.

My third choice for CLO would be Nordic Naturals Artic (without the added D). You can usually find this one at Vitamin Shoppe easily. I’ve also seen good things about Dropi as well.

My absolute favorite is the NutraPro because it is the best value and it is pretty potent!

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12 Replies to “My Favorite Cod liver oils!”

  1. I take 5000IU of Vit D3 and 10,000IU of Vit A animal kind which helps me. I am not ok with less. I agree sunlight is best. Fish oil 2000 mg is great. Cod liver oil, people used to take daily. Fish oil/cod liver oil may the immune system. I did not get colds/flu for more than 20 years due to taking 2000mg of fish oil daily.

    Nice article I enjoy the parts about Cu and Vit A etc. Great information! Thanks!

    1. I don’t particularly like it. I’ve heard of way too many people having negative reactions from it, plus I believe those that say that oils cannot ferment. The controversy with FCLO last year was enough to make me completely stay away.

  2. I have a few questions. I had my levels check and turns out im deficient in vit d. I was prescribed 50,000 a week in one pill. Im breastfeeding and searching the beat rout to up my vitamin d. Could you please direct me on how much cod liver oil i should be taking and also how I should get vik k?

  3. What about taking CLO as a pill instead of liquid? I’m taking Nordic Naturals Arctic right now, but just wondered what your thoughts are on pill form.

      1. Yes, Rosita’s actually has capsules now. Swanson’s is another one that has an extra strength CLO in capsules (and I’ve contacted them- they are apparently truly all natural). Nordic Naturals has caps as well but they really don’t have much A in there to be worthwhile.

  4. Kristen, I am looking at supplementing with cod liver oil, but I know I won’t be able to get the liquid down. I am looking at the Swanson’s because I can’t afford the Rosita. I want to get the right thing. Is it the Swanson brand double strength softgels that deliver 2,500 IU of vitamin A and 270 IU of vitamin D ?
    Thank You!

    1. Hi Linda! I’ve had a lot of people that have tried the NUtraPro that said the same as you- they were very picky about things, but they could get the NutraPro down with no issue. Definitely worth trying! I use that one myself (lemon flavored) and it really is mild. If not though, the Swanson’s brand claims they are all natural so they’d be a decent choice!

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