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There are 55 published clinical (human) studies on K2 according to a Pubmed search. Best to our knowledge, all of them are sponsored and published by academia bodies, not private companies. Some of our competitors provided technical assistance and free placebo and active samples in some of these studies (Collaborators). Please see the list of clinical trials with their sponsors and collaborators from this reliable source.
The results of these studies are copyrighted, however quoting small sections that are directly relevant to something one is writing about is acceptable under Fair Use, as long as one provides an appropriate citation. Summarizing and quoting from a medical article in a news article (Commentary, Criticism, “transformative”purpose) is considered a fair use according to this source.
All human clinical studies were designed and performed on Menaquinone-7 chemical compound which does not differ in terms of bioavailability or safety profile regardless if obtained through organic synthesis or biochemistry (industrial fermentation). Vitamin K2 offered in the market differs only in terms of purity offered and presentation oil, powder, microcapsule.
We encourage all our clients to produce educational content based on the available study results and fair use policy. In case of advertising of a specific brand, use of third-party study results is prohibited.
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TITLE
Vitamin K status in healthy volunteers
AUTHORS
Theuwissen E, Magdeleyns EJ, Braam LA, Teunissen KJ, Knapen MH, Binnekamp IA, van Summeren MJ, Vermeer C
CATEGORY
Vitamin K Deficiency
DATE
Feb 2014
KEYWORDS
menaquinone-7, vitamin K intake, vitamin K2
PUBMED LINK
TITLE
Menaquinone-4 in breast milk is derived from dietary phylloquinone.
AUTHORS
Thijssen HH, Drittij MJ, Vermeer C, Schoffelen E
CATEGORY
Vitamin K Deficiency
DATE
Mar 2002
KEYWORDS
menaquinone-4, phylloquinone, vitamin K1, vitamin K2
PUBMED LINK
TITLE
Anticoagulant effects of warfarin and kinetics of K vitamins in blood and feces.
AUTHORS
Nakamura K, Toyohira H, Kariyazono H, Ishibashi M, Saigenji H, Shimokawa S, Taira A
CATEGORY
Vitamin K Deficiency
DATE
Jan 1994
KEYWORDS
menaquinone-7, phylloquinone, vitamin K1, vitamin K2, warfarin
PUBMED LINK
TITLE
Vitamin K concentrations in the plasma and liver of surgical patients.
AUTHORS
Usui Y, Tanimura H, Nishimura N, Kobayashi N, Okanoue T, Ozawa K
CATEGORY
Vitamin K Deficiency
DATE
May 1990
KEYWORDS
menaquinone, phylloquinone, vitamin K deficiency, vitamin K1, vitamin K2
PUBMED LINK
TITLE
Dietary deficiency of phylloquinone and reduced serum levels in febrile neutropenic cancer patients.
AUTHORS
Conly J, Suttie J, Reid E, Loftson J, Ramotar K, Louie T
CATEGORY
Vitamin K Deficiency
DATE
Jul 1989
KEYWORDS
menaquinone, phylloquinone, vitamin K deficiency, vitamin K1, vitamin K2
PUBMED LINK
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