It is important to pay attention to our diet when we are on warfarin, a type of
Certain types of food can increase
or reduce the effects of warfarin by reducing blood clotting ability. When warfarin effect is not properly
controlled, it can be dangerous or even fatal.
view of the narrow theraputic window of warfarin, we need to avoid making any major change to our diets.
The key is to be consistent in what we eat.
It is important to note that vitamin K reverses the effects of
warfarin. Hence, we need to maintain a consistentdietary vitamin K intake.
average recommended daily allowance of vitamin K for adult men is 120 micrograms (mcg). For adult women, it is 90
Below is a summary of information on vitamin K diet, which I have
gathered from my research.
Summary of Vitamin K Intake In
Food rich in Vitamin K reduces the effects of warfarin
Dark, leafy green vegetables tends to contain higher
amounts of vitamin K. Examples of high vitamin K vegaetables are Kale, Spinach, Broccoli, Lettuce, Brussel
sprouts, Cabbage, green onions. You may like to refer to USDA for a comprehensive list of food with vitamin K.
Fruits high in vitamin K include Dried Prunes, Avocado, Kiwi
fruit, Blueberries & Blackberries etc.For more information on Vitamin K level in fruits, please refer to this
For animial products, only Beef liver & Pork liver are high in vitamin
beverages, Green tea is high in
vitamin k & counteracts the benefits of warfarin. Yet, Cranberry juice & Alcohol increase the effects of warfarin.
To avoid excessive blood thickening, we need to monitor our intake
for high vitamin K
If there is any change
in diet, it is better to inform your doctor to check if there is a need to adjust your
warfarin dosage accordingly.
It is very extremely important to ensure that our
INR remains in the theraputic range.