
Vitamin D3 + K2 liquid drops
Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

£55.00
Green Pasture's fermented cod liver oil and concentrated butter oil blend is the preparation most closely associated with the nutritional research of Dr Weston A.
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Green PastureFermented Cod Liver Oil and Concentrated Butter Oil (Gel)
Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

60 billion AFU of Akkermansia muciniphila plus 64 billion CFU of Lactobacillus acidophilus, 700 mg berberine, 200 mg inulin, 2.4 mg astaxanthin, and chromium i…
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Green Pasture's fermented cod liver oil and concentrated butter oil blend is the preparation most closely associated with the nutritional research of Dr Weston A. Price. It combines two whole-food oils in a single daily liquid dose.
The cod liver oil is slow-fermented rather than heat-extracted, a process that preserves naturally occurring omega-3 fatty acids EPA and DHA alongside fat-soluble vitamins A and D in the forms found in the whole food. The butter oil is concentrated from grass-fed dairy through centrifugation, and contributes vitamin K2 — the fat-soluble vitamin studied for its role in directing calcium towards bones and teeth rather than soft tissue.
The ingredient list is short: fermented cod liver oil, concentrated butter oil, and silicon dioxide as an anti-caking agent. No fillers, no flavour masking agents listed beyond what the two base oils provide.
This blend suits adults who want fat-soluble vitamins A, D and K2 alongside omega-3s in a traditionally prepared, whole-food form — particularly those who prefer to avoid synthetic isolates. The liquid format means the dose is easy to adjust under clinical guidance.
Vitamin D supports normal bone and muscle function; DHA supports normal brain function and vision; vitamin A contributes to normal immune function; vitamin K2 contributes to normal blood clotting and bone maintenance. These are established nutrient functions, not claims specific to this product.
One ingredient worth noting: this product contains both fish and milk. Anyone with allergies to either should not use it.
Raw fermented cod (fish) liver oil, raw butter (milk) oil concentrated through centrifugation, anti-caking agent (silicon dioxide). Contains fish and milk. For allergens, see ingredients in bold.

Take half a teaspoon (approximately 2 ml) once daily, or as directed by your clinician. It can be taken straight from the spoon or stirred into a small amount of honey, nut butter, or juice. Shake gently before use, refrigerate after opening, and consume within 60 days.
Heat extraction can degrade heat-sensitive nutrients. Fermentation processes the liver without high temperatures, which is why proponents of this method argue it better preserves the naturally occurring vitamins and fatty acids present in the whole food. It is the traditional preparation and the one Dr Weston A. Price documented in ancestral diets.
Butter oil is produced by centrifuging fat from grass-fed dairy milk, concentrating the fat-soluble nutrients found in the cream. It contributes vitamin K2 to the blend, which is studied for its role in calcium metabolism — specifically in directing calcium towards bone rather than arterial tissue. The two oils together provide vitamins A, D and K2 in combination.
Yes. The product contains fish (fermented cod liver oil) and milk (butter oil). It is not suitable for anyone with an allergy or intolerance to either. The allergens are highlighted in bold on the ingredient label.
Vitamins A and K2 both warrant caution in specific circumstances — high vitamin A intake is contraindicated in pregnancy, and vitamin K2 may interact with anticoagulant therapy. Consult your clinician before use if you are pregnant, breastfeeding, taking any medication, or have a blood-clotting condition.
The 188 ml bottle provides approximately 90 servings at the recommended half-teaspoon daily dose. Refrigerate after opening and consume within 60 days. Store with the seal intact in a cool, dry place before opening.
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Overall Sentiment
5 months ago
Been taking this for about six weeks now, a small dose each morning with breakfast. Hard to attribute anything to a single supplement when you're doing other things, but my energy levels have been noticeably steadier and my GP was pleased with my vitamin D at my last check. The taste is... distinctive, but you get used to it. Wouldn't go back to standard cod liver oil capsules.
6 months ago
Short ingredient list, no fuss. Does what it says.
6 months ago
Quality seems solid and I've been taking it consistently for a couple of months. My only gripe is that the bottle is quite small for the price — £55 feels steep when it runs out faster than I'd like. I end up rationing it slightly rather than being generous with the dose. Would be great if there were a larger format option. That aside, I'm happy with it and will keep buying.
6 months ago
I'd been on a run-of-the-mill fish oil capsule for years and a nutritionist suggested trying a fermented, whole-food version instead. The difference in how I feel is subtle but real — joints feel more comfortable through the winter months and I feel like I'm actually absorbing something rather than just ticking a box. The liquid format means I can adjust the dose easily, which I appreciate.
8 months ago
Started taking this before a half marathon training block on the advice of a friend who's very into Weston Price nutrition. Wasn't sure what to expect but I've kept it up long after the race. Nails and skin both seem in good shape. The flavour is strong and a bit fishy obviously, but I just take it quickly and move on.
9 months ago
Third time ordering. Reliable, ships quickly, and I trust the sourcing. Hard to find this properly fermented version elsewhere in Europe.
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