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Several vitamins can be dangerous when you take too much of them, but for most people, vitamin K isn't one of them. The only people who could get too much vitamin K are those taking the blood-thinning medication warfarin.
Not getting enough vitamin D is a common problem, but over-supplementation can also hurt your health. And too much of its partner vitamin K can be harmful, too. Here’s what you need to know.
Liver disease: Vitamin K is not effective for treating clotting problems caused by severe liver disease. In fact, high doses of vitamin K can make clotting problems worse in these people.
What Happens If I Take Too Much Vitamin K? There are no known adverse events associated with excess vitamin K intake. There is also no tolerable upper limit (TUL) set for vitamin K.
Vitamin K is necessary for normal blood clotting. It is also needed for healthy bones and other tissues. The effects of vitamin K toxicity can include anemia due to rupture of red blood cells and jaundice .
Can you have too much vitamin K? If you take a blood thinning medication, such as warfarin (Coumadin®), vitamin K can raise your risk for blood clots. That doesn’t necessarily mean you need to ...
Who should avoid vitamin K supplements? You should not use vitamin K supplements unless your health care provider tells you to.
You should be able to get all the vitamin K you need by eating a varied and balanced diet. If you take vitamin K supplements, do not take too much as this might be harmful. Taking 1mg or less of vitamin K supplements a day is unlikely to cause any harm.
If you take warfarin, make sure that the amount of vitamin K you consume from food and supplements is about the same every day. A sudden change in the amount of vitamin K you get can cause dangerous bleeding (if you consume less) or blood clots (if you consume more).
If you suddenly increase your intake of vitamin K, it can have an unintended consequence. It can actually decrease the effect of warfarin, says cardiologist Leslie Cho, MD .