Vitamin K is fat-soluble vitamin that plays a role in blood clotting in the body. It comes in two forms: vitamin K1 (phylloquinone) and vitamin K2 (menaquinones). Both have a similar chemical structure of 2-methyl-1,4-naphthoquinone. Vitamin K1 is naturally found in some foods, such as green vegetables like collard greens, spinach, and broccoli. Vitamin K2, one of the main forms of vitamin K, is synthesized by the bacteria found in the intestines. Vitamin K is also available as a dietary supplement. However, most people get the amount of vitamin K they need through diet alone. This article reviews the role of vitamin K in the body, its potential uses, side effects, and interactions with medications. Supplement Facts Active ingredient(s) : Phylloquinone or menaquinone Alternate name(s) : Phylloquinone, menaquinone, menadione, phytonadione Suggested dose : For healthy individuals, follow the recommended adequate intake (AI). Talk to your healthcare
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