vitamin K1

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Related to vitamin K1: vitamin K2, vitamin E, vitamin D3, Phytomenadione

phyl·lo·quin·one (K),

, phylloquinone K (fil'ō-kwin'ōn, -kwī'nōn),
The major form of vitamin K found in plants isolated from alfalfa; also prepared synthetically.

vitamin K1

a yellow, viscous, oil-soluble vitamin occurring naturally, especially in alfalfa, and produced synthetically. It is used as a prothrombinogenic agent. Also called phylloquinone, phytonadione.


Compound isolated from alfalfa; also prepared synthetically; major form of vitamin K found in plants.
Synonym(s): vitamin K1, vitamin K1.
References in periodicals archive ?
Serial changes in serum vitamin K1, triglyceride, cholesterol, osteocalcin and 25-hydroxyvitamin D3 in patients after hip replacement for fractured neck of femur in osteoarthritis.
LE: Vitamin K, in the form of vitamin K1 and vitamin K2, is critical to cardiovascular health, as well as offering protection against arterial calcification, bone loss, cancer, metabolic syndrome, and aging.
Studies using vitamin K1 for osteoporosis prevention have produced conflicting results.
Vitamin K1 is readily available in plant-based foods and easy to consume.
In the second study, vitamin K1 also enhanced the effects of sorafenib in hepatocellular carcinoma or primary liver cancer.
Just this year, Tufts University researchers linked high levels of vitamin K1 in the blood and the diet with low levels of 14 markers of inflammation in the body of nearly 1,400 middle-aged men and women.
Annual dietary questionnaire responses completed by the participants were analyzed for the intake of vitamin K1 and vitamin K2.
There are various forms of vitamin K, but the human trials have been done on vitamin K1 (phylloquinone), MK4, (MK4, a form of vitamin K2), and menaquinone-7 (longer-chain MK7).
Results from the European Prospective Investigation into Cancer and Nutrition (EPIC) study found that the highest intakes of vitamin K2, but not vitamin K1, were associated with a reduced risk of both overall cancer and cancer mortality, with the latter reduced by about 30 per cent.