Vitamin K1

What is Vitamin K1?

Vitamin K1 (phytonadione) is a fat soluble vitamin.

What does Vitamin K do?

Vitamin K is essential for the function of several proteins involved in blood clotting. Vitamin K is also involved in bone mineralization.

How common is Vitamin K deficiency?

Deficiency is extremely rare as vitamin K is found in many foods.

What foods is Vitamin K found in?

High levels of vitamin K are found in green leafy vegetables. Olive oil, canola oil and soybean oil also contain Vitamin K.

Who should consider supplementing with Vitamin K?

People eating well rounded healthy diets will get enough vitamin K. Adults aged 65 years and older should be sure to eat green vegetables and take a multi-vitamin. Most multi-vitamins contain a small amount of Vitamin K to ensure adequate intake.

Do any medications interact with Vitamin K?

Yes. Vitamin K is involved in helping blood clot. The anticoagulant effect of the medication warfarin is due to its ability to inhibit the action of Vitamin K. People taking warfarin must be consistent in the amount of green vegetables they eat each day.

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