{"title":"Vitamin K","description":"\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"BreadcrumbList\",\n  \"itemListElement\": [\n    { \"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/plenthera.com\/\" },\n    { \"@type\": \"ListItem\", \"position\": 2, \"name\": \"Categorieën\", \"item\": \"https:\/\/plenthera.com\/collections\/\" },\n    { \"@type\": \"ListItem\", \"position\": 3, \"name\": \"Vitamine K\", \"item\": \"https:\/\/plenthera.com\/collections\/vitamine-k\/\" }\n  ]\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"CollectionPage\",\n  \"name\": \"Vitamine K bij Plenthera\",\n  \"description\": \"Premium vitamine K — K1 phylloquinon en K2 menaquinon (MK-7 long-acting, MK-4). EFSA-erkend voor bloedstolling en behoud botten.\",\n  \"url\": \"https:\/\/plenthera.com\/collections\/vitamine-k\/\",\n  \"inLanguage\": \"nl-NL\",\n  \"isPartOf\": { \"@type\": \"WebSite\", \"name\": \"Plenthera\", \"url\": \"https:\/\/plenthera.com\/\" },\n  \"about\": {\n    \"@type\": \"Thing\",\n    \"name\": \"Vitamine K\",\n    \"alternateName\": [\"Vitamine K1\", \"Vitamine K2\", \"Phylloquinon\", \"Menaquinon\"],\n    \"description\": \"Vitamine K is een vetoplosbare vitamine met twee hoofdvormen: K1 (plantaardig) en K2 (dierlijk\/fermentatie).\"\n  }\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\":\"Question\",\"name\":\"Wat is het verschil tussen K1 en K2?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"K1 (phylloquinon) komt uit groene bladgroenten en is hoofdzakelijk verantwoordelijk voor bloedstolling. K2 (menaquinon) komt uit dierlijke producten en gefermenteerde voeding (natto) — speelt een rol bij calciumrouting naar botten en tanden.\"}},\n    {\"@type\":\"Question\",\"name\":\"Wat is het verschil tussen MK-4 en MK-7?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"MK-4 is short-acting (halfwaardetijd 1-2 uur), uit dierlijke bronnen, vereist hogere doseringen (45 mg\/dag in onderzoek). MK-7 is long-acting (halfwaardetijd 72 uur), uit natto-fermentatie, effectief bij lagere doseringen (90-200 µg\/dag).\"}},\n    {\"@type\":\"Question\",\"name\":\"Wat doet K2 bij vitamine D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Vitamine D verhoogt de calciumopname uit voeding. Vitamine K2 activeert eiwitten (osteocalcine, matrix-Gla-eiwit) die calcium naar de botten en tanden sturen, in plaats van naar zachte weefsels zoals bloedvatwanden.\"}},\n    {\"@type\":\"Question\",\"name\":\"Mag K2 bij bloedverdunners?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Bij vitamine K-antagonisten (warfarine, acenocoumarol, fenprocoumon): NIET zonder overleg met arts of trombosedienst. Vitamine K-inname kan de werking van deze medicijnen beïnvloeden. Bij DOACs\/NOACs (apixaban, rivaroxaban) is interactie minder kritisch — alsnog overleg.\"}},\n    {\"@type\":\"Question\",\"name\":\"Wat is natto?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Natto is een Japans gefermenteerd sojaboon-product, gemaakt door Bacillus subtilis natto. Bevat ~1.000 µg MK-7 per portie (~50g) — verreweg de hoogste natuurlijke MK-7-bron. Sterke smaak; supplementen leveren MK-7 zonder de natto-smaak.\"}}\n  ]\n}\n\u003c\/script\u003e\u003c\/p\u003e\u003carticle\u003e\u003cp\u003e\u003cem\u003eWritten by the Plenthera team (orthomolecularly trained). Scientifically reviewed in April 2026. Last updated: April 30, 2026.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eVitamin K is not a single molecule but a family. K1 (phylloquinone) comes from green leafy vegetables and primarily regulates blood clotting. K2 (menaquinone) comes from animal and fermented foods—especially Japanese natto—and has its own role: it activates proteins that direct calcium to bones and teeth, away from soft tissues. At Plenthera, you'll find \u003ca href=\"\/en\/collections\/vitamine-k\"\u003evitamin K\u003c\/a\u003e in all relevant forms: K1 for classic blood clotting function, K2 as MK-7 (long-acting) for bone and vascular health, and combined with D3 for maximum calcium routing.\u003c\/p\u003e\n\u003cnav aria-label=\"Table of contents\"\u003e\u003ch2\u003eTable of contents\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"#vergelijking\"\u003eWhich vitamin K is right for you?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#wat-is-vitamine-k\"\u003eWhat is vitamin K?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#efsa-claims\"\u003eVitamin K and EFSA — what is scientifically recognized?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#de-vitamine-d-k2-magnesium-synergie\"\u003eThe vitamin D + K2 + magnesium synergy\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#vormen\"\u003eThe vitamin K forms at Plenthera\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#hoe-gebruik\"\u003eHow to use vitamin K?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#mythes\"\u003eMyths and misconceptions about vitamin K\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#combineren\"\u003eCombining vitamin K with other supplements\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently Asked Questions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#bronnen\"\u003eSources\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/nav\u003e\u003csection\u003e\u003ch2 id=\"vergelijking\"\u003eWhich vitamin K is right for you?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003cth\u003eHalf-life\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eK2 MK-7\u003c\/td\u003e\n\u003ctd\u003e72 hours\u003c\/td\u003e\n\u003ctd\u003eBone\/vascular theme, low dosage effective\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD3 + K2 MK-7\u003c\/td\u003e\n\u003ctd\u003eSynergy\u003c\/td\u003e\n\u003ctd\u003ePremium bone\/cardiovascular stack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK1 phylloquinone\u003c\/td\u003e\n\u003ctd\u003eShort\u003c\/td\u003e\n\u003ctd\u003eSpecific blood clotting pathway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK2 MK-4\u003c\/td\u003e\n\u003ctd\u003e1-2 hours\u003c\/td\u003e\n\u003ctd\u003eHigh doses for specific purposes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK-complex (K1 + MK-4 + MK-7)\u003c\/td\u003e\n\u003ctd\u003eVariable\u003c\/td\u003e\n\u003ctd\u003eComplete K-profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"wat-is-vitamine-k\"\u003eWhat is vitamin K?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eVitamin K is a fat-soluble vitamin in two main forms: K1 (phylloquinone, plant-based) and K2 (menaquinone, animal-based and from fermentation). K2 consists of sub-forms MK-4 (short-acting) and MK-7 (long-acting). Vitamin K is essential for blood clotting and activates proteins that regulate calcium routing to bones and teeth.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVitamin K was discovered in 1929 by the Danish scientist Henrik Dam—hence the letter K (from the German \"Koagulation\"). For a long time, it was only known for its role in blood clotting. It wasn't until the 1970s-90s that it became clear that vitamin K2 has a second, fundamentally different function: it activates specific proteins (osteocalcin, matrix-Gla-protein, MGP) that regulate calcium routing in the body.\u003c\/p\u003e\n\u003cp\u003eThe most important distinction within vitamin K is K1 versus K2. K1 (phylloquinone) is found in green leafy vegetables—kale, spinach, broccoli, parsley. It is absorbed by the liver and used for blood clotting. K2 (menaquinone) comes from animal products (egg yolk, cheese, liver, grass-fed butter) and from fermentation—especially Japanese natto, which is by far the highest natural source of MK-7. K2 is distributed systemically throughout the body and reaches bones, teeth, blood vessels—in the places where calcium routing is relevant.\u003c\/p\u003e\n\u003cp\u003eThe subdivision of K2 into MK-4 and MK-7 is practically important. MK-4 has a short half-life (1-2 hours) and requires high doses to reach steady-state—up to 45 mg\/day in clinical research. MK-7, on the other hand, has a half-life of approximately 72 hours—lower doses (90-200 µg\/day) achieve stable blood levels. For most users, MK-7 is therefore the more logical route. Also check out our \u003ca href=\"\/en\/collections\/vitamine-d\"\u003evitamin D category\u003c\/a\u003e for the crucial D3+K2 synergy and our \u003ca href=\"\/en\/collections\/magnesium\"\u003emagnesium category\u003c\/a\u003e for the bone cofactors.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"efsa-claims\"\u003eVitamin K and EFSA — what is scientifically recognized?\u003c\/h2\u003e\n\u003cp\u003eVitamin K has two clear \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.efsa.europa.eu\/en\/topics\/topic\/health-claims\" target=\"_blank\"\u003eEFSA\u003c\/a\u003e-recognized claims, included in EU Regulation 432\/2012:\u003c\/p\u003e\n\u003cblockquote\u003e\u003cem\u003e\u003cstrong\u003e\"Vitamin K contributes to normal blood clotting.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/blockquote\u003e\n\u003cblockquote\u003e\u003cem\u003e\u003cstrong\u003e\"Vitamin K contributes to the maintenance of normal bones.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/blockquote\u003e\n\u003cp\u003eThreshold: claims apply with a daily intake of at least 15% RI—which is 11.25 µg of vitamin K per serving. Our products typically provide 75-200 µg per serving, well above the threshold.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"de-vitamine-d-k2-magnesium-synergie\"\u003eThe vitamin D + K2 + magnesium synergy\u003c\/h2\u003e\n\u003cp\u003eFor bone health, vitamin D3, K2, and magnesium form a logical trio:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVitamin D3:\u003c\/strong\u003e Increases calcium absorption from food through the intestinal wall. Without sufficient D3, absorption is suboptimal—even with high calcium intake.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVitamin K2 (MK-7):\u003c\/strong\u003e Activates osteocalcin—a protein that binds calcium to the bone matrix. Also activates matrix-Gla-protein (MGP) which inhibits calcium deposition in blood vessel walls. Without sufficient K2, calcium can be \"misrouted.\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMagnesium:\u003c\/strong\u003e Cofactor in vitamin D activation (liver and kidneys). Without sufficient magnesium, D3 supplementation works suboptimally.\u003c\/p\u003e\n\u003cp\u003eMany premium formulas offer D3 + K2 (MK-7) combined. For those who want to maximize support for bone and cardiovascular health, the trio of D3 + K2 + magnesium is a logical stack. Check out our \u003ca href=\"\/en\/collections\/vitamine-d\"\u003evitamin D category\u003c\/a\u003e for combined D3+K2 products.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"vormen\"\u003eThe vitamin K forms at Plenthera\u003c\/h2\u003e\n\u003ch3\u003eVitamin K2 MK-7 (from natto fermentation)\u003c\/h3\u003e\n\u003cp\u003eThe long-acting K2 form—half-life 72 hours, low doses (90-200 µg) sufficient for steady-state. Our first-line recommendation. Premium standards: MenaQ7®, Vitamk7®.\u003c\/p\u003e\n\u003ch3\u003eVitamin D3 + K2 (combined)\u003c\/h3\u003e\n\u003cp\u003eSynergistic combination for bone and cardiovascular health. Also check out our \u003ca href=\"\/en\/collections\/vitamine-d\"\u003evitamin D category\u003c\/a\u003e for the broader context. Doses typically 25-75 µg D3 + 75-200 µg K2.\u003c\/p\u003e\n\u003ch3\u003eVitamin K1 (phylloquinone)\u003c\/h3\u003e\n\u003cp\u003eClassic form—for those who specifically want to support the blood clotting role. Plant-based, from alfalfa extract.\u003c\/p\u003e\n\u003ch3\u003eVitamin K2 MK-4\u003c\/h3\u003e\n\u003cp\u003eThe short-acting form from animal sources. Requires higher doses for effect.\u003c\/p\u003e\n\u003ch3\u003eVitamin K-complex (K1 + K2 MK-4 + K2 MK-7)\u003c\/h3\u003e\n\u003cp\u003ePremium formula with all three forms for a complete K-profile.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"hoe-gebruik\"\u003eHow to use vitamin K?\u003c\/h2\u003e\n\u003cp\u003eSimple basic approach for vitamin K:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDetermine your goal: bone and cardiovascular health (K2 MK-7), classic blood clotting function (K1), or complete profile (K-complex).\u003c\/li\u003e\n\u003cli\u003eFor general supplementation: 75-200 µg K2 MK-7 per day.\u003c\/li\u003e\n\u003cli\u003eCombine with vitamin D3 (25-75 µg) for the crucial calcium-routing synergy.\u003c\/li\u003e\n\u003cli\u003eConsider magnesium cofactor (200-400 mg) for optimal D activation.\u003c\/li\u003e\n\u003cli\u003eAlways take with a fatty meal—vitamin K is fat-soluble.\u003c\/li\u003e\n\u003cli\u003eTiming is flexible; many users take K with their evening meal.\u003c\/li\u003e\n\u003cli\u003eWith vitamin K antagonist anticoagulants (warfarin, phenprocoumon, acenocoumarol): DO NOT take without consulting a doctor or thrombosis service, in accordance with the advice of the \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.nvwa.nl\/onderwerpen\/voedingssupplementen\/risico-s-voedingssupplementen\" target=\"_blank\"\u003eNVWA\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWith DOACs\/NOACs (apixaban, rivaroxaban, dabigatran): interaction is less critical—still consult.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"mythes\"\u003eMyths and misconceptions about vitamin K\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMyth 1: \"K2 MK-4 is always better than MK-7.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIncorrect for most users. MK-4 has a half-life of 1-2 hours—requires high doses (up to 45 mg\/day in research) for steady-state. MK-7 with a 72-hour half-life achieves stable blood levels at 100-200 µg\/day—thousands of times more efficient in terms of dosage.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMyth 2: \"K2 is found in milk and dairy.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eHalf true. Conventional dairy contains little K2. Fermented cheese (Gouda, Edam, brie) contains MK-9. Butter from grass-fed cows contains some MK-4. For targeted K2 intake, a supplement or natto is more effective.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMyth 3: \"Everyone who takes D3 needs K2.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eNot automatically. At common D3 doses (25-50 µg\/day), most people do not need acute K2 supplementation—sufficient from diet. At higher D3 doses (75-100 µg\/day) or long-term use, K2 supplementation becomes more logical.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMyth 4: \"Vitamin K is dangerous for people with blood clotting problems.\"\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eNuanced. With vitamin K antagonists (warfarin, phenprocoumon): maintaining stable vitamin K intake is more important than avoiding it. Sudden changes (starting or stopping) disrupt the medication. Always consult the thrombosis service.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"combineren\"\u003eCombining vitamin K with other supplements\u003c\/h2\u003e\n\u003cp\u003eVitamin K works synergistically with other fat-soluble vitamins and minerals for bone and cardiovascular health. Common combinations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en\/collections\/vitamine-d\"\u003eVitamin D3\u003c\/a\u003e: crucial synergy—D3 increases calcium absorption, K2 directs calcium to bones\/teeth.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en\/collections\/magnesium\"\u003eMagnesium\u003c\/a\u003e: cofactor in D activation.\u003c\/li\u003e\n\u003cli\u003eCalcium: for specific bone health, provided in the correct ratio (~2:1 calcium:magnesium).\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en\/collections\/vitamine-a\"\u003eVitamin A\u003c\/a\u003e: fat-soluble antioxidant, together with D and K a classic cod liver oil trio. Check out our \u003ca href=\"\/en\/collections\/visolie\"\u003efish oil category\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en\/collections\/vitamine-e\"\u003eVitamin E\u003c\/a\u003e: fat-soluble antioxidant.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en\/collections\/multi-vitamines\"\u003eMultivitamin\u003c\/a\u003e: for broad coverage with K2 incorporated.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"faq\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is vitamin K?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFat-soluble vitamin in two main forms: K1 (phylloquinone, plant-based) and K2 (menaquinone, animal\/fermentation).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between K1 and K2?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eK1: green leafy vegetables, primarily blood clotting. K2: animal\/natto, calcium routing to bones and teeth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between MK-4 and MK-7?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMK-4: short-acting (1-2 hour half-life), high doses needed. MK-7: long-acting (72 hour half-life), low doses sufficient.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much vitamin K per day?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRI 75 µg\/day. For broad supplementation, 75-200 µg K2 MK-7. No UL established for K1\/K2.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does K2 do with vitamin D?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eD3 increases calcium absorption; K2 activates osteocalcin and MGP which route calcium to bones\/teeth, away from soft tissues.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes vitamin K help bones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEFSA-recognized claim: vitamin K contributes to the maintenance of normal bones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to take vitamin K?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith a fatty meal for optimal absorption. Timing flexible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan K2 be taken with blood thinners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith vitamin K antagonists (warfarin, acenocoumarol, phenprocoumon): DO NOT take without consulting a doctor or thrombosis service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVegan vitamin K2—does it exist?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. K2 MK-7 from Bacillus subtilis natto fermentation is plant-based (fermented on soy). No animal production.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is natto?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eJapanese fermented soybean product. Contains ~1,000 µg MK-7 per serving—by far the highest natural source.\u003c\/p\u003e\u003c\/section\u003e\u003csection\u003e\u003ch2 id=\"bronnen\"\u003eSources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.efsa.europa.eu\/en\/topics\/topic\/health-claims\" target=\"_blank\"\u003eEFSA Regulation (EU) 432\/2012\u003c\/a\u003e — vitamin K claims.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/www.efsa.europa.eu\/en\/topics\/topic\/food-supplements\" target=\"_blank\"\u003eEFSA NDA Panel\u003c\/a\u003e — Dietary Reference Values for vitamin K (2017).\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11960685\/\" target=\"_blank\"\u003eSchurgers LJ. \u0026amp; Vermeer C.\u003c\/a\u003e, \"Differential lipoprotein transport pathways of K-vitamins in healthy subjects\", Biochim Biophys Acta (2002).\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3502319\/\" target=\"_blank\"\u003eSato T. et al.\u003c\/a\u003e, \"Comparison of menaquinone-4 and menaquinone-7 bioavailability in healthy women\", Nutr J (2012).\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23525894\/\" target=\"_blank\"\u003eKnapen MH. et al.\u003c\/a\u003e, \"Three-year low-dose menaquinone-7 supplementation helps decrease bone loss\", Osteoporos Int (2013).\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e This text is for informational purposes only and does not replace medical advice. Vitamin K is a dietary supplement, not a medicine. In case of doubt or medication use, we recommend consulting a doctor or orthomolecular therapist first.\u003c\/em\u003e\u003c\/p\u003e\u003c\/article\u003e","products":[{"product_id":"arthur-andrew-kd-ultra-r-90-caps","title":"KD Ultra® (90 Capsules) | Full Spectrum Vitamin K2 with Vegan Vitamin D3 - Arthur Andrew","description":"\u003cp\u003eKD Ultra® contains vitamin D3 from lichen (2,500 IU per capsule) and vitamin K2 in three forms (MK-4, MK-6, MK-7) in combination with vitamin K1. The formula also contains the enzyme lipase. Vegetable capsules, vegan certified.\u003c\/p\u003e\n\u003cp\u003e90 capsules per jar (90 servings of 1 capsule).\u003c\/p\u003e","brand":"Arthur Andrew Medical","offers":[{"title":"Default Title","offer_id":56769258946905,"sku":"AAM1055","price":49.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/files\/arthur-andrew-kd-ultra-90caps-1.jpg?v=1773848182"},{"product_id":"arthur-andrew-kd-ultra-r-4x90-caps-3-1-gratis-aanbieding","title":"KD Ultra® - 4x90 caps - 3+1 Free Offer","description":"\u003cp\u003eKD Ultra® contains vitamin D3 from lichen (2,500 IU per capsule) and vitamin K2 in three forms (MK-4, MK-6, MK-7) in combination with vitamin K1. The formula also contains the enzyme lipase. Vegetable capsules, vegan certified.\u003c\/p\u003e\n\u003cp\u003e4 jars with 90 capsules each (360 servings of 1 capsule).\u003c\/p\u003e","brand":"Arthur Andrew Medical","offers":[{"title":"Default Title","offer_id":56769477476697,"sku":"BP-AAM-004","price":149.85,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/files\/arthur-andrew-medical-kd-ultra-4x90-capsules-voordeelpakket-3plus1.jpg?v=1764601384"},{"product_id":"vitals-botformule-pro-60-tabs","title":"Bone and Dental Formula Pro – Calcium, Magnesium, D3, K2 \u0026 Silicon – 60 Tablets","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eVitals Bone and Tooth Formula Pro combines five classic bone nutrients in one tablet: calcium, magnesium, vitamin D3, vitamin K2, and silicon — the minerals in Albion® Minerals' amino acid-chelated TRAACS® form, vitamin K2 in Balchem's encapsulated K2VITAL™ DELTA form, and silicon as Eytelia's MESOPOROSIL®. Vegan, 60 tablets. Calcium, magnesium, vitamin D, and vitamin K contribute to the maintenance of normal bones.\u003c\/span\u003e\u003c\/p\u003e","brand":"Vitals","offers":[{"title":"Default Title","offer_id":56769567785305,"sku":"V4508","price":24.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/files\/V4508-Bot-en-Tandformule-Pro-60x165mm.png?v=1777629070"},{"product_id":"vitals-vitamine-k2-d3-60-caps","title":"Vitamin K2+D3 - 60 caps","description":"\u003cp\u003eVitals Vitamin K2 + D3 contains 60 softgels with a generous dosage of both fat-soluble vitamins in an MCT oil base. The vitamin K2 is menaquinone-7 (MK-7) from K2VITAL™ (Balchem) and the vitamin D3 is cholecalciferol from algae (Vitamin D3V®, plant-based). The softgels are vegan and the recommended dosage is 1–2 softgels per day with a (fat-containing) meal. One jar contains 60 softgels, enough for 30–60 days. The product is 100% vegan.\u003c\/p\u003e","brand":"Vitals","offers":[{"title":"Default Title","offer_id":56769576599897,"sku":"V4423","price":19.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/files\/vitals-vitamine-k2-90-mcg-met-vitamine-d3-25-mcg-60-capsules-new-1.jpg?v=1774529836"},{"product_id":"trace-minerals-liquid-d3-k2-59ml","title":"Ionic D3 + K2 – Liquid D3 \u0026 K2 – 59 ml","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eTrace Minerals Ionic D3 + K2 is a liquid combination formula of vitamin D3 (cholecalciferol) and vitamin K2 (menaquinone-7, MK-7) in a 59 ml dropper bottle. Per dose of 2 drops (0.1 ml), this product provides 62.5 µg of vitamin D3 (2,500 IU) plus 50 µg of vitamin K2 — a well-considered combination that supports calcium metabolism, bones, muscles, and the immune system. Liquid formula based on MCT coconut oil for good absorption of these fat-soluble vitamins. cGMP-produced in Ogden, Utah and independently lab-tested.\u003c\/span\u003e\u003c\/p\u003e","brand":"Trace Minerals","offers":[{"title":"Default Title","offer_id":56769629061465,"sku":"TRC6715","price":30.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/files\/trace-minerals-ionic-d3-k2-59-ml.jpg?v=1774527710"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6127\/3177\/collections\/vitals-vitamine-k2-90-mcg-met-vitamine-d3-25-mcg-60-capsules-new-1_6c3247c8-679d-4352-85a0-496060f61861.jpg?v=1776070780","url":"https:\/\/www.plenthera.com\/en\/collections\/vitamine-k.oembed","provider":"Plenthera","version":"1.0","type":"link"}