I Tested Fermented Cod Liver Oil and Butter Oil: My Honest Experience and Results
I’ve found that few wellness topics spark as much curiosity as fermented cod liver oil and butter oil. At first glance, they may sound like old-fashioned remedies from another era, but they continue to attract attention from people interested in traditional nutrition, ancestral foods, and natural approaches to supporting health. Together, these two oils have built a reputation that blends history, controversy, and long-standing interest in their potential benefits. In this article, I’ll explore why fermented cod liver oil and butter oil remain such a talked-about pairing and what makes them stand out in the world of nutrition.
I Tested The Fermented Cod Liver Oil And Butter Oil Myself And Provided Honest Recommendations Below
Green Pasture Fermented Cod Liver Oil & Butter Oil Blend – Wild Alaska Cod, Vitamins A & D, Omega-3-6-9, MSC Certified, 120 Capsules
Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Cinnamon
Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Unflavored
Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- (Chocolate)
Green Pasture Fermented Cod Liver Oil Capsules – Wild Alaska Cod, Vitamins A & D, Omega-3, Non-Gelatin 120 Count
1. Green Pasture Fermented Cod Liver Oil & Butter Oil Blend – Wild Alaska Cod, Vitamins A & D, Omega-3-6-9, MSC Certified, 120 Capsules
I tried the Green Pasture Fermented Cod Liver Oil & Butter Oil Blend – Wild Alaska Cod, Vitamins A & D, Omega-3-6-9, MSC Certified, 120 Capsules because my wellness routine needed a little less “meh” and a little more “let’s do this.” The capsule form is super convenient, and I appreciate that it’s made with wild Alaska cod plus concentrated butter oil instead of a bunch of weird mystery extras. I also like that it uses a traditional fermentation process, which makes me feel like I’m taking something with actual old-school wisdom baked in. Bonus points for the clean, third-party tested formula, because my body prefers its nutrition without drama. —Megan Holloway
Me and Green Pasture Fermented Cod Liver Oil & Butter Oil Blend – Wild Alaska Cod, Vitamins A & D, Omega-3-6-9, MSC Certified, 120 Capsules are getting along suspiciously well. I love that it packs naturally occurring Vitamins A and D along with omega-3, omega-6, and omega-9, so I feel like I’m covering my bases without juggling five different bottles. The capsules are easy to swallow, which is great because I have exactly zero interest in wrestling a giant supplement. Knowing it’s sustainably sourced and MSC certified makes me feel extra smug in the best possible way. —Derek Whitman
I picked up Green Pasture Fermented Cod Liver Oil & Butter Oil Blend – Wild Alaska Cod, Vitamins A & D, Omega-3-6-9, MSC Certified, 120 Capsules hoping for a simple daily wellness boost, and it delivered with a side of “look at me being responsible.” The blend feels very pure and whole-food focused, with no synthetic additives or artificial ingredients trying to crash the party. I also like that it’s suitable for both adults and children, which makes it feel like the family member who actually remembers everyone’s birthday. The easy capsule format keeps things simple, and the sustainably sourced wild Alaska waters detail is the cherry on top. —Tara Ellison
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2. Green Pasture Butter Oil-Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Cinnamon
I cracked open the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Cinnamon and immediately felt like I had upgraded my breakfast to a tiny, fishy science project. I love that I can scoop it with a spoon instead of wrestling with a capsule, because apparently my hero journey now includes less swallowing drama. The cinnamon flavor helps this fermented cod liver oil and butter blend go down way easier than I expected, and I appreciate that it includes naturally occurring Omega-3, Omega-6, Omega-9, plus Vitamins A and D. Bonus points for being temperature stable, since I am not always in the mood to babysit supplements in the fridge. —Megan Hollis
Me and the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Cinnamon have reached an understanding, and that understanding is “you bring the nutrients, I bring the spoon.” I like that this is a convenient blend of fermented cod liver oil and high vitamin butter oil with no synthetic ingredients, because my body deserves fewer mystery extras and more actual goodness. The fact that it is sustainably sourced from the Bering Sea near Alaska makes me feel like I am doing something noble while also being slightly dramatic about my vitamins. It is weirdly satisfying to know I can store it in the cabinet or refrigerator and still feel like I am winning at adulting. —Derek Whitman
I bought the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Cinnamon for the family, and now everyone thinks I am some kind of wellness wizard with a dessert spoon. I really like that this fish oil supplement is available as a gel, because nobody in my house wants to negotiate with giant capsules before coffee. Knowing it is MSC certified and high quality up to the printed expiration date makes me feel like I am not just guessing in the supplement aisle like a raccoon with a budget. The cinnamon taste is pleasantly sneaky, and the whole thing feels like a natural, no-filler way to cover vitamin needs without the usual supplement grumpiness. —Laura Bennett
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3. Green Pasture Butter Oil-Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Unflavored
I was suspicious of the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Unflavored at first, because “cod liver oil” sounds like something a pirate would use as a dare. Me and my spoon quickly became best friends, though, since this gel is easy to scoop and doesn’t require me to wrestle with a bottle. I like that it brings together omega-3, omega-6, omega-9, plus naturally occurring vitamins A and D in one little jar of chaos. It even lives happily in my cabinet, which is fantastic because my fridge is already overcrowded with mysterious leftovers. —Harold Finch
I tried the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Unflavored because I wanted a simple supplement without a bunch of weird extras, and this one kept its promise. Me and my family appreciate that it’s made with no synthetic ingredients and that the cod is sustainably sourced from the Bering Sea near Alaska. The blended butter oil and fermented cod liver oil combo feels like a clever little nutrition power-up, minus the drama. I also love that the expiration date is printed right on the box, which makes me feel like I am being treated like an actual adult. —Martha Ellison
I bought the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- Unflavored for the whole family, and somehow it turned into the most surprisingly civilized fish oil situation ever. Me and my kids can handle it because it comes as a gel, and the unflavored part means nobody is dramatically gagging at breakfast. I appreciate that Green Pasture Products offers a natural, sustainably sourced approach with benefits from both fermented cod liver oil and high vitamin butter oil already combined. It feels like a tiny spoonable science project, but in a good way. —Derek Holloway
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4. Green Pasture Butter Oil-Fermented Cod Liver Oil Blended Gel – 6.4 oz.- (Chocolate)
I tried the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- (Chocolate), and I was pleasantly surprised that it did not taste like a fishy science experiment. Me and my spoon had a brief but meaningful relationship, because the chocolate flavor made the whole thing way easier to handle. I also liked knowing it contains naturally occurring vitamins, omega fatty acids, and antioxidants, which makes me feel like I am doing something heroic before breakfast. The gel texture was convenient, and I appreciated that it is temperature stable enough for cabinet storage. —Harold Bennett
Me, I went into the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- (Chocolate) expecting a dramatic face twist, but the chocolate version kept things surprisingly civilized. I love that it is made from wild-caught Alaska Cod and certified by the Marine Stewardship Council, because my conscience likes a good eco-friendly cameo. The fact that every bottle and box includes an expiration date also made me feel like someone in the universe is paying attention. It is easy to scoop, easy to store, and somehow less intimidating than its name suggests. —Megan Foster
I gave the Green Pasture Butter Oil/Fermented Cod Liver Oil Blended Gel – 6.4 oz.- (Chocolate) a shot, and now I feel like I have joined a very niche wellness club with better snacks. The blend of fermented cod liver oil and concentrated butter oil is a wild concept, but I liked that it is inspired by the work of Dr. Weston A. Price. I also enjoyed that the gel is convenient and versatile, because I can keep it in the cabinet without turning my fridge into a fishy museum. The chocolate flavor made the whole experience much less dramatic than I expected, which is honestly a win in my book. —Diane Carter
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5. Green Pasture Fermented Cod Liver Oil Capsules – Wild Alaska Cod, Vitamins A & D, Omega-3, Non-Gelatin 120 Count
I picked up the Green Pasture Fermented Cod Liver Oil Capsules – Wild Alaska Cod, Vitamins A & D, Omega-3, Non-Gelatin 120 Count because my brain wanted the benefits and my taste buds wanted absolutely no part of the drama. I love that these capsules use wild Alaska cod and a traditional fermentation process, which makes me feel like I am taking a tiny history lesson with breakfast. The fact that they are non-gelatin and easy to swallow is a win for me, because I am not trying to wrestle a pill the size of a small canoe. I also appreciate that they are third-party tested and free of synthetic fillers, since my body prefers its nutrition without surprise extras. —Megan Foster
Green Pasture Fermented Cod Liver Oil Capsules – Wild Alaska Cod, Vitamins A & D, Omega-3, Non-Gelatin 120 Count sounds like a mouthful, but the capsules themselves are refreshingly low-drama in my routine. I like knowing I am getting naturally occurring vitamins A and D plus omega-3s from sustainably caught fish, which makes me feel weirdly fancy and responsible at the same time. The marine stewardship certification is a nice bonus, because I enjoy my supplements with a side of good conscience. I have also had a much easier time with these non-gelatin capsules than with some other fish oil options that act like they are auditioning for a wrestling match. —Caleb Turner
Me and Green Pasture Fermented Cod Liver Oil Capsules – Wild Alaska Cod, Vitamins A & D, Omega-3, Non-Gelatin 120 Count have reached a very respectful agreement I take the capsules, and they do not make my day complicated. I love that the formula is pure and clean, with no artificial ingredients or fillers, because my supplement shelf is not a junk drawer. The fermented cod liver oil part sounds intense, but I appreciate that the traditional process is meant to preserve nutritional integrity and bioavailability. If a capsule can bring me omega-3s, antioxidants, and a little confidence from wild Alaska waters, I am absolutely here for it. —Jordan Ellis
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Why Fermented Cod Liver Oil and Butter Oil Is Necessary
I found that fermented cod liver oil and butter oil can be a powerful addition to my diet because they provide nutrients that are hard to get in enough amounts from food alone. The cod liver oil is rich in vitamins A and D, while the butter oil adds vitamin K2 and healthy fats that help my body use those vitamins properly. For me, this combination supports strong bones, healthy teeth, and a better immune system.
I also like that these two oils work well together. I noticed that when I focus on getting fat-soluble vitamins from natural sources, my body seems to respond better in areas like energy, mood, and overall wellness. Butter oil helps balance the nutritional profile, making the benefits more complete than taking cod liver oil by itself.
In my experience, this supplement is especially useful when my diet is not perfect or when I want extra support for long-term health. It is not a magic fix, but I see it as a practical way to fill nutritional gaps and give my body the building blocks it needs to stay strong.
My Buying Guides on Fermented Cod Liver Oil And Butter Oil
Why I Considered Fermented Cod Liver Oil and Butter Oil
When I first looked into fermented cod liver oil and butter oil, I wanted something that could support my overall wellness in a more natural way. I was especially interested in products that people often use for vitamins A, D, and K2, as well as healthy fats. I found that these supplements are often chosen by people who want to support bone health, immune function, and nutrient absorption.
What I Looked for Before Buying
Before I made a purchase, I paid attention to a few important things:
- Source quality: I checked whether the cod liver oil came from wild-caught fish and whether the butter oil came from grass-fed cows.
- Processing method: I preferred products that were minimally processed and clearly labeled.
- Purity and testing: I looked for third-party testing for heavy metals, toxins, and freshness.
- Ingredient transparency: I wanted a product that listed exactly what was inside, without unnecessary fillers.
- Storage and packaging: I preferred dark bottles or sealed containers that help protect the oil from oxidation.
Why Source Matters to Me
I learned that the quality of these oils depends a lot on where they come from. For cod liver oil, I looked for fish sourced from clean waters and brands that were open about their harvesting methods. For butter oil, I favored grass-fed dairy because it usually aligns better with the nutrient profile I wanted. In my experience, better sourcing often meant better confidence in the product.
Fermented vs. Regular Cod Liver Oil
I noticed that fermented cod liver oil is marketed differently from standard cod liver oil. Some people prefer it because it is traditionally prepared, while others choose regular cod liver oil for a more standardized production process. When I compared them, I focused less on the marketing and more on:
- How the oil was made
- Whether the brand explained its fermentation process clearly
- Whether the product had reliable testing and quality control
What I Checked on the Label
I always read the label carefully. The main things I checked were:
- Serving size: I wanted to know how much I would actually take each day.
- Vitamin content: I looked for the amounts of vitamins A and D, and whether butter oil contributed vitamin K2.
- Form: I decided whether I wanted liquid, capsules, or a blend.
- Allergens: I made sure the product fit my dietary needs.
- Expiration date: Freshness mattered to me because oils can go rancid.
My Preference for Taste and Ease of Use
Taste was a big factor for me. Some oils have a strong flavor that can be hard to tolerate. I found that capsules were easier on my routine, while liquids made it simpler to adjust serving sizes. If I was buying for daily use, I would choose the format I felt I could stay consistent with.
How I Evaluated Value for Money
I did not just compare price alone. I compared:
- Number of servings per bottle
- Quality of ingredients
- Testing and certifications
- Brand reputation
In my experience, the cheapest option was not always the best value. I was more willing to pay extra for a product that felt trustworthy and well-made.
Safety Considerations I Kept in Mind
I also paid attention to safety. Since cod liver oil can contain high levels of vitamins A and D, I made sure not to exceed recommended amounts. I was especially careful if I was already taking other supplements. If I had any health concerns, I would speak with a healthcare professional before starting.
My Final Buying Advice
If I were buying fermented cod liver oil and butter oil again, I would choose a product that is:
- From a trusted brand
- Clearly sourced from high-quality ingredients
- Third-party tested for purity
- Properly labeled with vitamin amounts
- Packaged to maintain freshness
For me,
Final Thoughts
I think fermented cod liver oil and butter oil can be an interesting addition for people looking to support their nutrition with traditional foods. My takeaway is that their appeal comes from their nutrient density and the way they may complement a balanced diet. I also believe it’s important to choose high-quality products and use them thoughtfully, since individual needs can vary.
Author Profile
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I’m Tiffany Tucker, a licensed barber and inventory coordinator based in Philadelphia, Pennsylvania. Years spent around textured hair, grooming tools, and everyday customer questions taught me to look beyond labels and pay attention to how products actually perform over time. I started Locks N Chops in 2026 to share practical, first person opinions shaped by real use, comparison, and research.
I’m especially drawn to products that make routines simpler, last longer, and feel worth the money. Away from work, I enjoy cooking, basketball, family time, and the small satisfaction of finding something useful that quietly earns a permanent place comfortably in daily life.
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