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Vitamin K is a family of structurally similar, fat-soluble vitamers found in foods and marketed as dietary supplements. [1] The human body requires vitamin K for post-synthesis modification of certain proteins that are required for blood coagulation ("K" from Danish koagulation, for "coagulation") or for controlling binding of calcium in bones and other tissues. [2]
Vitamin K2 may have a protective effect on bone mineral density and reduced risk of hip, vertebral and non-vertebral fractures. [11] These effects appear to be accentuated when combined with vitamin D and in the setting of osteoporosis. [1] Research suggests that vitamin K 2 (Menaquinone 7, MK-7]) may reduce the rate and severity of night time ...
The term "vitamin K antagonist" is a misnomer, as the drugs do not directly antagonise the action of vitamin K in the pharmacological sense, but rather the recycling of vitamin K. Vitamin K is required for the proper production of certain proteins involved in the blood clotting process.
The menadione core is apparent in the structure of vitamin K. It is an intermediate in the chemical synthesis of vitamin K by first reduction to the diol menadiol, which is susceptible to coupling to the phytol. [10] It is a useful intermediate for organic synthesis in general, as it can be made and modified in a number of ways. [11]
Vitamin K (phylloquinones, menaquinones, and menadiones) Some sources include a fourteenth, choline. [6] Vitamins have diverse biochemical functions. Vitamin A acts as a regulator of cell and tissue growth and differentiation. Vitamin D provides a hormone-like function, regulating mineral metabolism for bones and other organs.
Vitamin K2 is lauded for a number of important health benefits. But taking too much can be dangerous, health experts say.
Phytomenadione, also known as vitamin K 1 or phylloquinone, is a vitamin found in food and used as a dietary supplement. [6] [7] It is on the World Health Organization's List of Essential Medicines. [8] It is used to treat certain bleeding disorders, [7] including warfarin overdose, vitamin K deficiency, and obstructive jaundice. [7]
A vitamer is any of the related forms in which some vitamin occurs. Each vitamer (/ ˈ v aɪ t ə m ər /) of a particular vitamin is a compound that performs the functions of that vitamin and prevents the symptoms of deficiency of the vitamin. Early research identified vitamins by their ability to cure vitamin-specific deficiency diseases.