Effective reversal of warfarin- induced excessive anticoagulation with low dose vitamin K1
. Thromb Haemost.
The intake of phylloquinone (vitamin K1
) was not found to impact any of the targeted outcomes .
Yamane et al., "Conversion of phylloquinone (vitamin K1
) into menaquinone-4 (vitamin K2) in mice: Two possible routes for menaquinone-4 accumulation in cerebra of mice," Journal of Biological Chemistry, vol.
Vaccaro and Huffman found an inadequate vitamin K1
intake in older adults, especially in Hispanic and Black Americans, and vitamin K1
was an independent predictor of high arterial pulse pressure .
The leading food sources of vitamin K1
are green tea and dark green leafy vegetables such as kale, turnip greens, spinach, broccoli, lettuce, and cabbage.
Schurgers, et al., "Vitamin K-Containing Dietary Supplements: Comparison of Synthetic Vitamin K1
and Natto-Derived Menaquinone-7," Blood 109, 3279-3283 (2007).
, which comprises about 90 percent of our vitamin K intake, is found primarily in leafy green vegetables, and some fruits, such as avocado and kiwifruit, Hunnes says.
6 April 2010 - Norwegian biopharma company NattoPharma ASA (OSL: NATTO) said today that a study, conducted in Germany, has suggested an anticarcinogenic effect of 42% of its product MenaQ7, or natural vitamin K2, on prostate cancer, while no effect was found for vitamin K1
Vitamin K exists in two natural forms: vitamin K1
, or phylloquinone, found largely in green leafy vegetables, as well as some vegetable oils, such as canola and soybean oils; and vitamin K2, or menaquinone, for which meat and cheese are the primary dietary sources.
(phytonadione), which is available in food and as a supplement, is the particular chemical that competes with warfarin.
According to The Grand Dictionary of Chinese Medicine and the Compendium of Materia Medica, as well as many certified tests and analyses carried out by the Department of Agriculture and the Institute for Nutrition and Food Safety of the Center of Disease Prevention and Control of China, cacti contain over 18 kinds of amino acid, carbohydrates, chief meal fibrin, carotene, vitamin C, vitamin E, vitamin K1
, vitamin B1, vitamin B2, vitamin B6, vitamin B12, smoke acid, folacin, calcium, phosphorus, iron, potassium, sodium, magnesium, manganese, copper, zinc, iodine, and selenium.
Sources of vitamin K: In its naturally occurring form it is called vitamin K1
and exists in leafy greens such as turnip and spinach, and in high levels in stinging nettles and alfalfa.