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[mass noun] Any of a group of vitamins found mainly in green leaves and essential for the blood-clotting process. They include phylloquinone (vitamin K1) and menaquinone (vitamin K2).
- ‘We get vitamins from food and drink; vitamin K and some of the B's are produced by bacteria in our intestines.’
- ‘For example, bacteria in the gut regularly synthesize vitamin K, which is important for blood clotting.’
- ‘Studies have found a direct relationship between blood levels of vitamin K and bone mineral density.’
- ‘There were no differences between vitamin K from broccoli and vitamin K from oil overall.’
- ‘Vitamin E can interfere with the action of vitamin K (which promotes blood clotting).’
- ‘A large dose of vitamin K1 should also be given.’
- ‘Although vitamin K is usually identified as a critical factor in blood coagulation, recent research has found that vitamin K is also a cofactor in bone metabolism.’
- ‘Newborns lack the ability to make vitamin K, which is needed for blood clotting, for a few days after birth.’
- ‘One other vitamin has a letter: vitamin K, a substance required for the clotting of blood.’
- ‘Injected into the thigh muscle of newborns, vitamin K is given to enhance blood clotting and prevent hemorrhaging.’
- ‘It interferes with the body's natural chemical process of clotting, by targeting an essential substance called vitamin K.’
- ‘Selecting products with selected other nutrients such as vitamin D and vitamin K was discussed.’
- ‘One such product is vitamin K, a substance essential for blood clotting.’
- ‘The watercress meets almost your entire day's need for vitamin K, and the apple provides fiber, plus vitamins A and C.’
- ‘The richest sources of vitamin K 1 are dark green leafy vegetables including broccoli, lettuce, cabbage, spinach and green tea.’
- ‘Some causes of acquired factor deficiencies include liver disease, vitamin K deficiency, and drug therapy.’
- ‘With the help of calcium, vitamin K, and a protein called fibrinogen, the platelets create a mesh to hold the plug in place and close the wound.’
- ‘If the patient is at risk for hemorrhage, low-dose oral vitamin K1 also should be given.’
- ‘However, formula fed infants are resistant to oral anticoagulants because of a high concentration of vitamin K in their diet.’
- ‘Few, if any, multiple vitamin and mineral supplements contain vitamin K2.’
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