Vitamin K and Its Role in Your Body

10. Vitamin K: Risk Concerns

Vitamin K has low toxicity potential in forms K1 and K2. The Food and Nutrition Board (FNB) at the Institute of Medicine of the National Academies has not reported any negative effects resulting from the nutrient's consumption. The FNB has not established an upper intake level. However, some situations call for precautions with this vitamin. For instance, some drugs can impact vitamin K levels adversely. People with blood disorders and pregnant women need to be especially careful consuming this vitamin in food or supplement form. These individuals, as well as those with a history of heart disease or stroke, should consult their physician before modifying vitamin K intake.

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