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Updated 11 July 2019

How much vitamin K do you need?

The adequate intake (AI) for vitamin K is 120 microgram per day for male adults and 90 microgram per day for female adults.

The adequate intake (AI) for vitamin K is 120 microgram per day for male adults and 90 microgram per day for female adults.

This vitamin is seldom found in supplements as your body makes its own. The only people that need supplementation are those who’ve had large sections of their bowel removed, or people with digestive absorption problems.

 
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