Rosita Handcrafted Ratfish Liver Oil™

One of Nature's Rare Wonders

Rosita Ratfish Liver Oil™

Nutrient data from independent analytical testing

Our oil contains a wide spectrum of naturally occurring fatty acids, fat soluble nutrients, antioxidants and naturally occurring biologically active alkylglycerol lipids.

Each serving (10 drops/0.5 ml) provides these naturally occurring nutrients (values quoted are minimum values)#:

  • Vitamin D3: approximately 475 IU (for 1 teaspoon = 4750 IU).
  • Vitamin A: this fat-soluble vitamin has been harder to accurately measure and the testing Institute has said this is likely to  be because of the unusual lipid composition of our ratfish oil.
  • Vitamin E: 0.22 mg.
  • Vitamin K2: testing for K2 in marine oils is not yet accurate so we have not tested for this vitamin.
  • Whole range of fatty acids: omegas 3, 4, 6, 7, 9, 11, etc.
  • Total n-3 PUFA: 27 mg.
  • EPA: 12.2 mg.
  • DHA: 8 mg.
  • Total n-6 PUFA: 11 mg.
  • Phytosterols: campesterol, stigmasterol, and ∆5-avenasterol.
  • Alkylglycerols: value range 14.4 – 30%. Ratfish liver oil has a very unusual lipid composition because it is an exceptional source of rare biological lipids called Alkylglycerols. Research suggests that these lipids have various physiological effects including immune-supporting properties. It is likely that a lot of the properties of ratfish oil that made it a favourite amongst the ancient Nordic Vikings may be due to the presence of Alkylglycerols.

#This is an 100% unprocessed oil and so nutrient levels will vary from harvest to harvest, in accordance with natural seasonal and geographic variations. We will NEVER add or take anything away from our oils. The levels are what you would find present in the oil of a "living" wild fish liver.

Please note: we will be performing ongoing testing with all of our oils.



Nutritional analysis

Rosita Ratfish Liver Oil™ is a good source of fatty acids, fat-soluble vitamins, phytosterols, and rare naturally occurring ether lipids with potent biological activities known as alkylglycerols.

Tested by University of Sterling.


From our beautiful nature - island of Doenna, Helgeland - Norway



Into the Midnight Sun - from our island Doenna, Helgeland - Norway - Photo: ROSITA Handcrafted Ratfish Liver Oil

Nutrition Facts

Rosita Ratfish Liver Oil™ 50 ml (large bottle)
Suggested Serving Size: 10 drops daily  
Servings Per Bottle: Approximately 100


Amount Per Serving:

Calories 5.6  Calories from Fat 5.2 


    % Daily Value*
Total Fat 0.5g 0.8%
Saturated Fat 0.1g 0.5%
Trans Fat 0g 0%
Cholesterol 0.9mg 0.3%
Sodium 76µg 0.003%
Total Carbohydrate 19.6mg 0.007%
Dietary Fibre 0g 0%
Sugars 0g 0%
Protein 2mg 0.004%


Contains a wide spectrum of naturally occurring fatty acids, fat soluble nutrients and antioxidants. An exceptionally rich source of naturally occurring biologically active alkylglycerol lipids.
* Percent Daily Values are based on a caloric intake of 2,000 calories.
Does not contain: Gluten, yeast, milk derivatives, artificial colours or flavours. Absolutely nothing added.
Nutrient levels may change slightly from harvest to harvest, in accordance with natural seasonal and geographic variations.
Please note: This product is not intended to diagnose, treat, cure or prevent any disease or health condition.
Keep out of reach of children. Store in a cool, dry place.


100% Wild Handcrafted Extra-Virgin Rosita Ratfish Liver Oil™. Less than 0.3% acidity. No heat or mechanical devices are used to extract this oil, only natures’ ancient principles.

(Please note: The content on this site is for reference purposes and is not intended to substitute for advice given by a medical practitioner, pharmacist, or other licensed healthcare professional. Discontinue use if adverse reactions occur and consult a doctor).



We suggest

An initial dose of 10-12 drops twice a day for a period of 6 weeks, followed by a maintenance dose of 8-10 drops daily. The oil can also be used topically for wounds or as a very special and unique ancient skin elixir.

Consult with your physician before using doses substantially higher than recommended, or taking this product if you are pregnant or lactating, diabetic, allergic to fish or iodine, using blood thinners, anticipate surgery, have a diagnosed cardiovascular condition, bleeding or immune system disorder. Keep out of reach of children.

If you or your child has never consumed fish or fish oil, or if you suspect a food allergy, consult your doctor prior to using a fish body oil/fish liver oil product. As an additional insurance, you could also rub a small amount of Rosita Ratfish Liver Oil™ into a small area on the skin, such as the lower leg.



Vitamin K

We strongly suspect that vitamin K2 is present in Rosita Ratfish Liver Oil™ but are still actively looking for a good quality European research institution capable of accurately measuring K2, which is generally monitored between MK-4 (menaquinone-4) and MK-7 (menaquinone-7). The majority of companies cannot yet measure the K2 content of fish oil.

Vitamin K health benefits

Vitamin K helps make four of the 13 proteins needed for blood clotting. Recently, researchers have demonstrated that vitamin K also plays a role in building bone.



Vitamin E

Rosita Ratfish Liver Oil™ contains alpha-tocopherol, the biologically and chemically most active form of vitamin E, and by far the most abundant lipid-soluble antioxidant in humans.

Vitamin E health benefits

The primary function of alpha-tocopherol in humans appears to be that of an antioxidant, neutralising free radicals. Free radicals are nasty chemicals capable of damaging cells and genetic material. Free radicals are generated primarily when the body turns food into energy, and also by sunlight's action on the skin and eyes. Others are in the food you eat and the air you breathe.

Alpha-tocopherol is an important and potent cell membrane antioxidant. Long-chain polyunsaturated fatty acids are an integral part of all cell membranes, and vital for normal cell function. Free radicals are capable of reacting with these fatty acids and causing lipid peroxidation, membrane injury, and cell death. Alpha-tocopherol helps to prevent lipid peroxidation by neutralising free radicals, preventing the propagation of free radical damage in membranes. It therefore helps to maintain the integrity of cell membranes. It also helps to protect the fats in circulating low-density lipoprotein (LDL, sometimes called bad cholesterol) molecules from oxidation. Oxidised LDL is more likely to get trapped in an artery wall and is now regarded as a prime inducer of cardiovascular disease.

Additionally, alpha-tocopherol has been shown to help maintain immune cell function, enhance aspects of the immune response that appear to decline in old age, enhance vasodilatation (relaxation of blood vessels so blood flows easily), and help prevent the formation of blood clots that could lead to a heart attack or stroke.



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