Common questions

Does vitamin K lower or increase INR?

Does vitamin K lower or increase INR?

Vitamin K can change how warfarin works, which changes your INR. Vitamin K lowers your INR values. The lower your INR, the less time it takes for your blood to clot.

How much vitamin K should I take on warfarin?

Guylaine Ferland, lead study author and professor of nutrition at Université de Montréal and scientist at the Montreal Heart Institute Research Centre, said the findings suggest patients on warfarin would significantly benefit from consuming at least 90 micrograms of vitamin K per day for women and 120 micrograms per …

What is the Diet for Coumadin?

Diet Guidelines for Patients Taking Warfarin (Coumadin)

These foods are high in vitamin K (serving size is ½ cup) These foods are medium-high in Vitamin K (serving size is 1 cup, except brussels sprouts = ½ cup)
Spinach (cooked) Romaine lettuce
Swiss chard (cooked) Spinach (raw)
Turnip greens (cooked) Turnip greens (raw)

Does warfarin cause vitamin K deficiency?

Although vitamin K deficiency is uncommon in adults, certain people are at increased risk if they: take coumarin anticoagulants such as warfarin, which thins the blood.

Should you avoid vitamin K warfarin?

One nutrient that can lessen warfarin’s effectiveness is vitamin K. It’s important to be consistent in how much vitamin K you get daily.

How does warfarin interact with vitamin K?

Warfarin and vitamin K both regulate blood clots, with warfarin prolonging the process and vitamin K vital to the chemical process that causes clotting in the blood. Warfarin acts against vitamin K by increasing the time it takes for blood to clot.

How much vitamin K is too much for people on warfarin?

For reversing the blood thinning effects of warfarin: A single dose of 1-5 mg of vitamin K1 is typically used to reverse the effects of taking too much warfarin. The exact dose needed is determined by a lab test called the INR.

What foods are low in vitamin K?

Meat and Other Foods. Meat generally is low in vitamin K, except canned fish packed in oil and abalone. Dairy products, including eggs, are also low in vitamin K. Most beans and legumes, with the exception of black-eyed peas, soy and green beans are low in vitamin K.

What vegetables are low in K?

If you are trying to reduce vitamin K from your diet, you can consume the following vegetables: green beans, peas, carrots, potatoes, celery, or corn, according to New York University Medical Center. Other vegetables low or without vitamin K include cucumbers, eggplants, tomatoes, peppers or zucchini.