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menatetrenone

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Also known as menaquinone 4, Menaquinone K4, 2-Methyl-3-(3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraenyl)-1,4-naphthoquinone, 2-Methyl-3-trans-tetraprenyl-1,4-naphthoquinone, 2-Methyl-3-geranylgeranyl-1,4-naphthoquinone, Vitamin MK 4, MK4, MK-4

Menatetrenone (INN), also known as menaquinone-4 (MK-4), is one of the nine forms of vitamin K2.

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Contents
  • Biology
  • As a medication
  • Bioavailbility and dose
  • References

Menatetrenone (INN), also known as menaquinone-4 (MK-4), is one of the nine forms of vitamin K2.

== Biology == MK-4 is the major form of Vitamin K in vertebrate animals, including humans and common forms of meat animals. It is produced via conversion of vitamin K1 in the body, specifically in the testes, pancreas and arterial walls. The conversion is not dependent on gut bacteria, occurring in germ-free rats and in parenterally-administered K1 in rats. Tissues that accumulate high amounts of MK-4 have a capacity to convert up to 90% of the available K1 into MK-4.

Excerpted from Wikipedia’s “menatetrenone” article, available under the CC BY-SA 4.0 licence.

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