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K2-D3 - Bone and Heart Support

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For maximum support of healthy bones, nerves, heart, and mitochondrial function, take Silver Fern™’s K2-D3!* Our K2D3 is the most powerful K2D3 supplement available, containing 300mcg or 3x the normal dose of MenaquinGold® (K2-7) as other K2D3 supplements supporting healthy bones.*

K2-D3 Bone & Heart Support

  • Brain & Nerve Health*
  • Bone Mineral Density*

K2-D3 - Optimum Support for Heart and Bone Health*

K2 + D3 = Supports Healthy Bones!* Silver Fern’s K2D3 is the most powerful K2D3 supplement available, containing 300mcg or 3x the normal dose of MenaquinGold® (K2-7) as other K2D3 supplements.  MenaquinGold® is the only all-natural pharmaceutical grade vitamin K2-7 available. Recent studies suggest that the effect of pairing K2 and D3 together is much more effective than if taken on their own.1,2


WHY K2-7 IS IN K2D3?

K2-7 is one of the most important bone and heart health supplements our bodies need, unfortunately most people in America are deficient in K2.4 Many Americans get large amounts of calcium and vitamin D from eating fortified foods and taking supplements. However, excessive amounts of calcium and Vitamin D WITHOUT K2 can cause calcium to deposit into the tissues and arteries where it forms cement-like plaque. Instead of enhancing the bone matrix, this over supplementation can cause plaque build-up and vascular calcification (calcium accumulation in body tissues, blood vessels, and organs). It can also cause the hardening and narrowing of the arteries or atherosclerosis. Many of the problems associated with cardiovascular disease, the #1 cause of mortality worldwide5,6, are attributed to atherosclerosis. Excessive calcium intake may increase the risk of cardiovascular diseases.7 Without Vitamin K2, the Vitamin D3 and calcium you are consuming do not end up where they are supposed to be. Vitamin K2 escorts the calcium to the bone and then the vitamin D3 enhances the calcium’s absorption and integration into the bone matrix*.8

K2-7 can provide huge health benefits including:

  • Supports a healthy cardiovascular system*
  • Supports healthy bones*
  • Supports normal sugar levels*
  • Supports healthy mitochondrial function*
  • May help with Athletic Performance*
  • Supports youthful looking skin by activating matrix-GLA protein21,22,23


K2 and D3 are scientifically proven to perform better together than apart. Vitamin D3 is an important supplement that supports mitochondrial function, helps normal mitochondrial function, helps normal immune function, and healthy bone formation.24 Vitamin D3 helps support energy levels and helps reduce fatigue*.25 If a bone product with Vitamin D and calcium DOES NOT contain active vitamin K2, it is at least 20-30 times less effective as a bone building supplement9,10,11

    What do we get from Vitamin D3?

    • Supports calcium absorption
    • Supports healthy bone growth

    Vitamin D3 has been linked to support normal sugar levels, heart health, normal blood pressure and bone health*.27

    How does Vitamin D3 detox pathways?

    Detoxification happens in 2 phases:

    • PHASE 1: In phase one the toxins need to be transformed before they can be eliminated. Vitamin D3 increases the detox enzymes responsible for this transformation by nearly 10-fold and helps flush out carcinogens and harmful chemicals.
    • PHASE 2: In phase two detoxification compounds bind and neutralize the toxins and help them excrete from the body. These important nutrient compounds include glutathione, amino acids, methionine, and sulfur. While your diet can provide many of the detox compounds, the critical glutathione compound is only produced by your own tissues. Glutathione prevents cellular damage from free radicals, peroxides, heavy metals, and other toxins. Vitamin D3 significantly increases levels of glutathione.

    Natural Vitamin D3, as found in K2D3, is a great daily supplement that when paired with K2 becomes even more powerful and beneficial for your body.

    What is the Secret to choosing the right K2D3 Product?

    ANSWER: Get the right form of K2-7 and then dose it correctly: Of the almost 13,000 studies on K2 all but one was done on natural K2. Very little is known about synthetic K2. The most recent and most powerful studies used approximately 300 mcg per day. If your K2-7 is not natural and if the dosing isn’t correct, then you aren’t getting the full benefits of K2-7.

    Silver Fern’s K2-7 comes from MenaquinGold®, a pharmaceutical grade form of MK-7 that is the only K2 approved by the FDA for use with infants and children. It is produced through the fermentation process of chickpeas and is 100% soy-free. This powerful form of K2-7 has a higher concentration and superior bioavailability than other K2-7 products. If your K2-7 supplement does not contain MenaquinGold® you really don’t know how good your K2-7 supplement is! The fact is that not all K2-7 are alike, and most K2 products have gone synthetic. Many companies claim to be natural but are only partially natural or are completely synthetic. So why choose natural over synthetic?

    1. All the amazing research on the benefits of K2-7 are based upon a natural K2-7. Synthetic is not supported by this research
    2. Synthetic K2-7 has a different structure than natural K2-7
    3. Synthetic K2-7 is produced using toxic compounds that some suggest may not have been tested for safety
    4. Long term use of synthetic vitamins may cause health complications
    5. Synthetic vitamins are not bioequivalent to natural vitamins

    Get the Proven Results, use the Proven form of Natural K2-7!

    Why 300 mcg of K2 per serving?

    The optimal daily dosing for K2-7 is 300mcg. Most K2-7 products, including even the synthetic forms, only provide 100mcg per serving.   You need 3X more than what most K2-7 products provide! All the recent research on the MenaquinGold® specific to normal mitochondria function, healthy cardiovascular function, and athletic performance, etc., were all done at the higher dose of 300 mcg per day*  If you are not getting enough K2-7 per day then you will not get the proven benefits!  Silver Fern’s K2D3 provides you with the correct amount of the best K2-7 available to ensure you get the best results!

    The Science and Studies?

    Understanding K2

    Menaquin Gold Summary

    Menaquin Gold Spec Sheet

    K2-D3 Stronger Together

    Vitamin K2 and Mitochondria Repair

    K2D3 Supplement Facts
    * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.



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    2. https://www.nutraingredients-usa.com/
    3. van Ballegooijen, et al. The Synergistic Interplay between Vitamins D and K for Bone and Cardiovascular Health: A Narrative Review. Int J Endocrinol. 2017;2017:7454376.
    4. Beulens JWJ, van der A DL, Grobbee DE, et al. Dietary Phylloquinone and Menaquinones Intakes and Risk of Type 2 Diabetes. Diabetes Care. 2010; 33(8), 1699–1705.
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    6. Ohtsuka S, Kakihana M, Watanabe H, et al. Chronically decreased aortic distensibility causes deterioration of coronary perfusion during increased left ventricular contraction. J Am Coll Cardiol. 1994; 24: 1406–14.
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    9. Ushiroyama T, Ikeda A, Ueki M. Effect of continuous combined therapy with vitamin K(2) and vitamin D(3) on bone mineral density and coagulofibrinolysis function in postmenopausal women. Maturitas. 2002; 41:211–21.
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    11. Shiraki M, Shiraki Y, Aoki C, et al. Vitamin K2
      (menatetrenone) effectively prevents fractures and sustains lumbar bone mineral density in osteoporosis. J Bone Miner Res. 2000 Mar;15(3):515-21.
    12. Gast GCM, et al. A high menaquinone reduces the incidence of coronary heart disease in women. Nutr Metab Cardiovasc Dis. 2009; 19:504-510.
    13. Knapen MHJ, Braam LAJL, Drummen NE, Bekers
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      1. Choi HJ, Yu J, Choi H, et al. Vitamin K2 supplementation improves insulin sensitivity via osteocalcin metabolism: a placebo-controlled trial. Diabetes Care. 2011 Sep;34(9):e147.
      2. Beulens JW, van der AD, Grobbee DE, Sluijs I, Spijkerman AM, van der Schouw YT. Dietary phylloquinone and menaquinones intakes and risk of type 2 diabetes. Diabetes Care. 2010
      3. Lamson DW, Plaza SM. The anticancer effects of vitamin K. Altern Med Review. 2003;8(3).
      4. Nimptsch K, Rohrmann S, Kaaks R, Linseisen J. Dietary vitamin K intake in relation to cancer incidence and mortality: results from the Heidelberg cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Heidelberg). Am J Clin Nutr. 2010 May;91(5):1348-58.
      5. McFarlin BK, Henning AL, Venable AS. Oral Consumption of Vitamin K2 for 8 Weeks Associated with Increased Maximal Cardiac Output During Exercise. Altern Ther Health Med. 2017;23(4):26-32.
      6. Kulkarni VK, Upase DP, Dound YA, et al. The effect of vitamin K2-7 in peripheral neuropathy due to Vitamin B12 deficiency and/or diabetes mellitus: A Preliminary Study. The Indian Practitioner.
        2013;66(10): 625-629.
      7. Shuster S. Osteoporosis, a unitary hypothesis of collagen loss in skin and bone. Med Hypotheses. 2005;65(3):426-32.
      8. Gheduzzi D, Boraldi F, Annovi G, et al. Matrix Gla protein is involved in elastic fiber calcification
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      12. MenaquinGold® White Paper Cardiovascular Disease Section 
      13. https://www.webmd.com/osteoporosis/features/the-truth-about-vitamin-d-why-you-need-vitamin-d#