Taking 1mg or less of vitamin K supplements a day is unlikely to cause any harm. If you take vitamin K supplements, do not take too much as this might be harmful. What does the Department of Health and Social Care advise? There's not enough evidence to know what the effects might be of taking high doses of vitamin K supplements each day. What happens if I take too much vitamin K?

You should be able to get all the vitamin K you need by eating a varied and balanced diet.Īny vitamin K your body does not need immediately is stored in the liver for future use, so you do not need it in your diet every day. The word microgram is sometimes written with the Greek symbol μ followed by the letter g (μg). How much vitamin K do I need?Īdults need approximately 1 microgram a day of vitamin K for each kilogram of their body weight.įor example, someone who weighs 65kg would need 65 micrograms a day of vitamin K, while a person who weighs 75kg would need 75 micrograms a day.Ī microgram is 1,000 times smaller than a milligram (mg). Small amounts can also be found in meat and dairy foods. green leafy vegetables – such as broccoli and spinach.

Patients were categorized into: 25 (OH)D < 50 or 50 nmol/L and dp-ucMGP < 361 or 361 pmol/L with 25 (OH)D > 75 nmol/L and dp-ucMGP < 361 pmol/L as reference.

There's also some evidence vitamin K may help keep bones healthy. At baseline, vitamin D and K status was determined by measurement of 25-hydroxyvitamin D 25 (OH)D and dephosphorylated uncarboxylated matrix Gla protein (dp-ucMGP), respectively. Vitamin K is a group of vitamins that the body needs for blood clotting, helping wounds to heal.

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