Some people refer to it as the “clotting vitamin” that is naturally found in certain foods rich in vitamin K and other dietary supplements.
People who take the blood thinner warfarin are advised to maintain a consistent dietary intake of vitamin K. Otherwise, their medication may become less effective.
Food Rich in Vitamin K
Food is a top source of both vitamins K1 (phylloquinone) and K2 (menaquinones). Green leafy vegetables are the most common food source including the following:
- Collard greens
- Turnip greens
- Beet greens
- Mustard greens
- Brussels sprouts
- Swiss chard
Other foods rich in vitamin K are as follows:
- Natto (fermented soybeans)
- Soybean oil
- Canola oil
- Rapeseed oil
- Olive oil
Vitamin K Recommended Intakes
The Food and Nutrition Board (FNB) established the Dietary Reference Intakes (DRI), which advises the Adequate Intakes (AI) for vitamin K and other important nutrients for daily consumption.
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