Vitamin K
A lipid cofactor that is required for normal blood clotting. Several forms of vitamin K have been identified: VITAMIN K 1 (phytomenadione) derived from plants, VITAMIN K 2 (menaquinone) from bacteria, and synthetic naphthoquinone provitamins, VITAMIN K 3 (menadione). Vitamin K 3 provitamins, after being alkylated in vivo, exhibit the antifibrinolytic activity of vitamin K. Green leafy vegetables, liver, cheese, butter, and egg yolk are good sources of vitamin K.
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Subheadings:
Tree Number(s): D02.455.426.559.847.638.721.374, D02.455.849.291.523.500, D04.615.638.721.374
MeSH Unique ID: D014812
Registry Number: 12001-79-5
Pharmacologic Action: