When should you not take vitamin K2?
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Vitamin K plays a key role in helping the blood clot, preventing excessive bleeding. Unlike many other vitamins, vitamin K is not typically used as a
dietary supplement. Vitamin K is actually a group of compounds. The most important of these compounds appears to be vitamin K1 and vitamin K2. Vitamin K1 is obtained from leafy greens and some other vegetables. Vitamin K2 is a group of compounds largely obtained from meats, cheeses, and eggs, and synthesized by bacteria. Vitamin K1 is the main form of vitamin K
supplement available in the U.S. Recently, some people have looked to vitamin K2 to treat osteoporosis and steroid-induced bone loss, but the research is conflicting. At this point there is not enough data to recommend using vitamin K2 for
osteoporosis. Low levels of vitamin K can raise the risk of uncontrolled bleeding. While vitamin K deficiencies are rare in adults, they are very common in newborn infants. A single injection of vitamin K for newborns is standard. Vitamin K is also used to counteract an
overdose of the blood thinner Coumadin. While vitamin K deficiencies are uncommon, you may be at higher risk if you: In these cases, a health care provider might suggest vitamin K supplements. Uses of vitamin K for cancer, for the symptoms of morning sickness,
for the removal of spider veins, and for other conditions are unproven. Learn more about vitamins k2 and d3 as well as which foods pack the highest amount. The recommended adequate intake of vitamin K you take in, both from food and other sources is below. Most people get enough vitamin K from their diets. Group Adequate Intake Children 0-6 months 2 micrograms/day Children 7-12 months 2.5 micrograms/day Children 1-3 30 micrograms/day Children 4-8 55 micrograms/day Children 9-13 60 micrograms/day Girls 14-18 75 micrograms/day Women 19 and up 90 micrograms/day Women, pregnant or breastfeeding (19-50) 90 micrograms/day Women, pregnant or breastfeeding (under 19) 75 micrograms/day Boys 14-18 75 micrograms/day Men 19 and up 120 micrograms/day There have been no adverse effects of vitamin K seen with the levels found in food or supplements. However, this does not rule out danger with high doses. Researchers have not set a maximum safe dose. Good natural food sources of vitamin K include: You can also meet your daily requirement with foods that have lesser amounts of vitamin K: Side effects of oral vitamin K at recommended doses are rare. Interactions. Many drugs can interfere with the effects of vitamin K. They include antacids,
blood thinners, antibiotics, aspirin, and drugs for cancer, seizures, high cholesterol, and other conditions. Risks. You should not use vitamin K supplements unless your health care provider tells you to. People using Coumadin for heart
problems, clotting disorders, or other conditions may need to watch their diets closely to control the amount of vitamin K they take in. They should not use vitamin K supplements unless advised to do so by their health care provider. Vitamin K is a group of vitamins found in some green vegetables. Vitamins K1 (phytonadione) and K2 (menaquinone) are commonly available as supplements. Vitamin K is an essential vitamin needed by the body for blood clotting, bone building, and other important processes. It's found in leafy green vegetables, broccoli, and Brussels sprouts. The name vitamin K comes from the German word "Koagulationsvitamin." People commonly use vitamin K for blood clotting problems or for reversing the blood thinning effects of warfarin. It is also used for osteoporosis, athletic performance, breast cancer, diabetes, and many other conditions, but there is no good scientific evidence to support most of these other uses.
You Might Also LikeView More CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you. This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version. What medications does vitamin K2 interfere with?Medications known to interact with Vitamin K2. anisindione.. cholestyramine.. colesevelam.. colestipol.. dicumarol.. maralixibat.. mineral oil.. odevixibat.. Can vitamin K2 cause problems?When taken by mouth: The two forms of vitamin K (vitamin K1 and vitamin K2) are likely safe when taken appropriately. Vitamin K1 10 mg daily and vitamin K2 45 mg daily have been safely used for up to 2 years. It's usually well-tolerated, but some people may have an upset stomach or diarrhea.
What happens when you start taking vitamin K2?It contributes to skin health and bone metabolism, promotes proper brain function and prevents heart-related diseases. Furthermore, vitamin K2 is important in the body's use of calcium to help build bones and to inhibit blood vessel calcification.
Can Too Much vitamin K2 cause blood clots?Abnormal clotting is not related to excessive vitamin K intake, and there is no known toxicity associated with vitamin K1 or vitamin K2 (see Toxicity). Some oral anticoagulants, such as warfarin (Jantoven, formerly known as Coumadin), inhibit coagulation by antagonizing the action of vitamin K.
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