Is it possible to eat too much vitamin k

Phylloquinone: This form occurs in plants and is consumed in the diet. It is absorbed better when it is consumed with fat. Phylloquinone is not toxic, even in large amounts. Menaquinone: This form is produced by bacteria in the intestine, but only small amounts of it are produced. In some countries, this form is used for supplementation. Vitamin K is necessary for normal blood clotting. Page last reviewed: 03 August Next review due: 03 August There's also some evidence vitamin K may help keep bones healthy.

Good sources of vitamin K Vitamin K is found in: green leafy vegetables — such as broccoli and spinach vegetable oils cereal grains Small amounts can also be found in meat and dairy foods. How much vitamin K do I need? Keep in mind that in certain circumstances, your healthcare provider may recommend that you take more than the UL for certain nutrients to correct a deficiency.

For example, vitamin D deficiencies are often treated with high-dose vitamin D injections or supplements that deliver over 50, IU of vitamin D, which is much more than the UL Though most supplement bottles provide recommendations regarding how much of a vitamin to take per day, needs can vary from person to person.

Some vitamins have set ULs to prevent potential toxicity. Overdosing on certain vitamins can lead to serious complications and, in rare circumstances, even death. Multivitamins are the world's most popular dietary supplements. This article takes a detailed look at the health effects of multivitamins.

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This article examines the scientific evidence behind…. Men and women have different nutritional needs, so gender should play a role when selecting a multivitamin supplement. Here are the 16 best…. Vitamin K refers to a group of fat-soluble vitamins that play a role in blood clotting, bone metabolism, and regulating blood calcium levels. The body needs vitamin K to produce prothrombin, a protein and clotting factor that is important in blood clotting and bone metabolism.

People who use blood-thinning medications, such as warfarin, or Coumadin, should not start consuming additional vitamin K without first asking a doctor. Deficiency is rare, but, in severe cases, it can increase clotting time, leading to hemorrhage and excessive bleeding. Vitamin K1, or phylloquinone, comes from plants. It is the main type of dietary vitamin K. A lesser source is vitamin K2, or menaquinone, which occurs in some animal-based and fermented foods.

Phylloquinone, also known as vitamin K1, is found in plants. When people eat it, bacteria in the large intestine convert it to its storage form, vitamin K2.

It is absorbed in the small intestine and stored in fatty tissue and the liver. Without vitamin K, the body cannot produce prothrombin, a clotting factor that is necessary for blood clotting and bone metabolism. Most Americans are not at risk of a vitamin-K deficiency. It is most likely to affect newborns and those with a malapsorption problem, due, for example, to short-bowel syndrome, cystic fibrosis , celiac disease , or ulcerative colitis. Newborns normally receive a vitamin K injection to protect them from bleeding in the skull, which could be fatal.

The recommended adequate intake for vitamin K depends on age and gender.